Elizabeth Anderson’s “pluralist–expressivist” value theory, an alternative to the understanding of value and rationality underlying the “rational actor” model of human behavior, provides rich resources for addressing questions of environmental and animal ethics. It is particularly well-suited to help us think about the ethics of commodification, as I demonstrate in this critique of the pet trade. I argue that Anderson’s approach identifies the proper grounds for criticizing the commodification of animals, and directs our attention to the importance of maintaining social (...) practices and institutions that respect the social meanings of animals. Her theory alone, however, does not adequately address the role of the state in this project. Drawing on social contract theory to fill this gap, I conclude that the state’s role in regulating the pet trade should be limited to ensuring the welfare of animals in the stream of commerce, not prohibiting their mass marketing altogether. (shrink)
We outline the rationale and preliminary results of using the State Context Property (SCOP) formalism, originally developed as a generalization of quantum mechanics, to describe the contextual manner in which concepts are evoked, used, and combined to generate meaning. The quantum formalism was developed to cope with problems arising in the description of (1) the measurement process, and (2) the generation of new states with new properties when particles become entangled. Similar problems arising with concepts motivated the formal treatment introduced (...) here. Concepts are viewed not as fixed representations, but entities existing in states of potentiality that require interaction with a context---a stimulus or another concept---to `collapse' to observable form as an exemplar, prototype, or other (possibly imaginary) instance. The stimulus situation plays the role of the measurement in physics, acting as context that induces a change of the cognitive state from superposition state to collapsed state. The collapsed state is more likely to consist of a conjunction of concepts for associative than analytic thought because more stimulus or concept properties take part in the collapse. We provide two contextual measures of conceptual distance---one using collapse probabilities and the other weighted properties---and show how they can be applied to conjunctions using the pet fish problem. (shrink)
Stiff Person Syndrome (SPS) is a rare autoimmune disorder associated with antibodies against glutamic acid decarboxylase (GAD-Ab), the key enzyme in γ -aminobutyric acid synthesis (GABA). In order to investigate the role of cerebral benzodiazepinereceptor binding in SPS, we performed [ 11 C]flumazenil (FMZ) positron emission tomography (PET) in a female patient with SPS compared to nine healthy controls. FMZ is a radioligand to the postsynaptic central (...) benzodiazepine receptor which is co-localized with the GABA-A receptor. In the SPS patient, we found a global reduction of cortical FMZ binding. In addition, distinct local clusters of reduced radiotracer binding were observed. These data provide first in vivo evidence for a reduced postsynaptic GABA-A receptor availability which may reflect the loss of GABAergic neuronal inhibition in SPS. (shrink)
The status of wild capture fisheries has induced many fisheries and conservation scientists to express concerns about the concept of using forage fish after reduction to fishmeal and fish oil, as feed for farmed animals, particularly in aquaculture. However, a very large quantity of forage fish is being also used untransformed (fresh or frozen) globally for other purposes, such as the pet food industry. So far, no attempts have been made to estimate this quantum, and have been omitted in previous (...) fishmeal and fish oil exploitation surveys. On the basis of recently released data on the Australian importation of fresh or frozen fish for the canned cat food industry, here we show that the estimated amount of raw fishery products directly utilized by the cat food industry equates to 2.48 million metric tonnes per year. This estimate, plus the previously reported global fishmeal consumption for the production of dry pet food suggest that 13.5% of the total 39.0 million tonnes of wild caught forage fish is used for purposes other than human food production. This study attempts to bring forth information on the direct use of fresh or frozen forage fish in the pet food sector that appears to have received little attention to this date and that needs to be considered in the global debate on the ethical nature of current practices on the use of forage fish, a limited biological resource. (shrink)
This paper offers a framework for consciousness of internal reality. Recent PET experiments are reviewed, showing partial overlap of cortical activation during self-produced actions and actions observed from other people. This overlap suggests that representations for actions may be shared by several individuals, a situation which creates a potential problem for correctly attributing an action to its agent. The neural conditions for correct agency judgments are thus assigned a key role in self/other distinction and self-consciousness. A series of behavioral experiments (...) that demonstrate, in normal subjects, the poor monitoring of action-related signals and the difficulty in recognizing self-produced actions are described. In patients presenting delusions, this difficulty dramatically increases and actions become systematically misattributed. These results point to schizophrenia and related disorders as a paradigmatic alteration of a ''Who?'' system for self-consciousness. (shrink)
I explore how some aspects of Foucoult’s work on power can be applied to human/animal power relations. First, I argue that because animals behave as “beings that react” and can respond in different ways to human actions, in principle at least, Foucoult’s work can offer insights into human/animal power relations. However, many of these relations fall into the category of “domination,” in which animals are unable to respond. Second, I examine different kinds of human power practices, in particular, ways in (...) which humans construct animal constitutions and animal subjectivities. Finally, I use a case study of a pet cat to show how such power practices may come together in a single instance. (shrink)
The recent 'animal turn' in geography has contributed to a critical examination of the inseparable geographies of human and non-human animals, and has a clear ethical dimension. This paper is intended to explore these same ethical issues through a consideration of the historical geography of petkeeping as this relates to the death and commemoration of favourite household animals. The emergence of the pet cemetery, towards the end of the 19th century, is a significant step in itself, but this was only (...) one element in a radical reappraisal of the place of non-human animals in human sensibility and spirituality. For some bereaved pet-owners, the old question of the immortality of animal souls was retrieved and transformed, and sustained by a raft of unorthodox theological and spiritual speculation. The significance of this late Victorian and Edwardian response to non-human animals is assessed and treated as a problem of ethics, as a counterweight to the dominant anthropocentrism of past times and ours. (shrink)
It's a sort of moebus strip argument. Rather than circularly assuming what it should prove, it assumes one of the things Fodor says he has disproved. It assumes that the extensions of those concepts thought by some to be recognitional are in fact controlled by stereotypes. Why do I say that? Because Fodor assumes that what makes an instance of a concept a "good instance" is that it is an average instance, that it sports the properties statistically most commonly found (...) among instances of that concept. But that the "good instances" are always the common instances is remotely plausible only if we take concepts to be organized by stereotypes. True, a goldfish is not an average or stereotypical fish (SSis that true?) and the nursing profession is not average for a male and maleness is not average for a nurse. But there is surely is nothing borderline about the fishiness of a goldfish nor, typically, about the maleness of a male nurse or the petness of a pet fish. Notice also that good examples of some kinds of things are very hard to find, for example, good examples of the fallacy of accent, and good examples of wild children, and (nowadays) good examples of scurvy are hard to find. If good instances had to be instances that were average, including in respects having nothing to do with the point of the category being defined, and if recognitional concepts had to recognize by attending to average properties, then I suppose the recognitional ability defining the concept "sphere" would have to include the ability to tell whether a thing bounces! (shrink)
In this chapter, we aimed at further characterizing the functional neuroanatomy of the human rapid eye movement (REM) sleep at the population level. We carried out a meta-analysis of a large dataset of positron emission tomography (PET) scans acquired during wakefulness, slow wave sleep and REM sleep, and focused especially on the brain areas in which the activity diminishes during REM sleep. Results show that quiescent regions are confined to the inferior and middle frontal cortex and to the inferior parietal (...) lobule. Providing a plausible explanation for some of the features of dream reports, these findings may help in refining the concepts, which try to account for human cognition during REM sleep. In particular, we discuss the significance of these results to explain the alteration in executive processes, episodic memory retrieval and self representation during REM sleep dreaming as well as the incorporation of external stimuli into the dream narrative. (shrink)
The sets of contexts and properties of a concept are embedded in the complex Hilbert space of quantum mechanics. States are unit vectors or density operators, and contexts and properties are orthogonal projections. The way calculations are done in Hilbert space makes it possible to model how context influences the state of a concept. Moreover, a solution to the combination of concepts is proposed. Using the tensor product, a procedure for describing combined concepts is elaborated, providing a natural solution to (...) the pet fish problem. This procedure allows the modeling of an arbitrary number of combined concepts. By way of example, a model for a simple sentence containing a subject, a predicate and an object, is presented. (shrink)
Depue & Collins's (D&C's) work relies on extrapolation from data obtained through studies in experimental animals, and needs support from studies of the role of dopamine (DA) neurotransmission in human behaviour. Here we review evidence from two sources: (1) studies of patients with Parkinson's disease and (2) positron emission tomography (PET) studies of DA neurotransmission, which we believe lend support to Depue & Collins's theory, and which can potentially form the basis for a true neurochemistry of personality.
When animals are trained to function in a human society (for example, pet dogs, police dogs, or sports horses), different trainers and training cultures vary widely in their ability to understand how the animal perceives the communication efforts of the trainer. This variation has considerable impact on the resulting performance and welfare of the animals. There are many trainers who frequently resort to physical punishment or other pain-inflicting methods when the attempts to communicate have failed or when the trainer is (...) unaware of the full range of the potential forms of human-animal communication. Negative consequences of this include animal suffering, imperfect performance of the animals, and sometimes risks to humans, as repeated pain increases aggression in some animals. The field of animal training is also interesting from a semiotic point of view, as it effectively illustrates the differences between the distinct forms of interaction that are included in the concept of communication in the zoosemiotic discourse. The distinctions with the largest potential in improving human-animal communication in animal training, is understanding the difference between verbal communication of the kind that requires rather high cognitive capabilities of theanimal, and communication based on conditioning, which is a form of animal learning that does not require high cognitive ability. The differences and potentials of various types of human-animal communication are discussed in the form of a case study of a novel project run by a NGO called Working Elephant Programme of Asia (WEPA), which introduces humane, science-based training and handling methods as an alternative to the widespread use of pain and fear that is the basis of most existing elephant training methods. (shrink)
This article examines the neurobiological basis of the healing power attributed to shamanic practices in the Andes and Brazil in light of the pharmacology of neurotransmitters and the new technological explorations of brain functioning. The psychotropic plants used in shamanic psychiatric cures interfere selectively with the intrinsic neuromediators of the brain. Mainly they may alter: (1) the neuroendocrine functioning through the adrenergic system by controlling stressful conditions, (2) the dopaminergic system in incentive learning and emotions incorporation, (3) the serotoninergic system (...) in modulating behaviors, and mood, and (4) basic functions implied in anxiety or depression. PET scans and functional magnetic resonance imaging studies of hypnotic trance and altered states of consciousness may provide a useful model for the neurophysiological phenomena of shamanic drum-and-dance trance. The reorganization of cortical areas and the direct interconnections between the prefrontal cortex and the dopaminergic reward centers in the limbic system are of particular significance for human social judgment and symbolic processing. Those centers—including the hypothalamus and the amygdala (associated with psychosomatic equilibrium, memory, and emotion) are enhanced. This arousal may be amplified in order to induce a cathartic crisis—the shamanic trance. It is suggested that through this holistic approach the shaman empirically interferes in neurobiological dysfunctions. (shrink)
Recent innovations in computer software development have produced a new breed of pet, AIBO 2, a robotic pet that simulates the behavior of real pets. This paper argues that software developers who create such simulations have ethical responsibilities to product users and to society. The paper concludes with some general ethical guidelines for software developers to follow when engaged in projects involving real-world simulations.
This article considers the roles played by brain images (e.g., from PET scans) in mass media as experienced by people suffering from mental illness, and as used by scientists and activist groups in demonstrating a biological basis for mental illness. Examining the rhetorical presentation of images in magazines and books, the article describes the persuasive power that brain images have in altering the understanding people have of their own bodyâtheir objective self. Analyzing first-person accounts of encounters with brain images, it (...) argues that people come to understand themselves as having neurotransmitter imbalances that are the cause of their illnesses via received facts and images of the brain, but that this understanding is incomplete and in tension with the sense that they are their brain. The article concludes by querying the emergence of a pharmaceutical self, in which one experiences one's brain as if on drugs, as a new form of objective self-fashioning. (shrink)
We have several intuitive paradigms of defeating evidence. For example, let E be the fact that Ernie tells me that the notorious pet Precious is a bird. This supports the premise F, that Precious can fly. However, Orna gives me *opposing* evidence. She says that Precious (the same Precious) is a dog. Alternatively, defeating evidence might not oppose Ernie's testimony in that direct way. There might be other ways for it to weaken the support that Ernie's testimony gives me for (...) believing F, without the new evidence itself intuitively constituting reasons to believe one way or the other about Precious's flight ability. An example: Ursula tells me that Ernie has no idea what Precious's species is; he's just guessing. She may not herself want to or be in a position to weigh in about Precious's real species or flight ability. I call defeating evidence of this sort *undermining evidence. (shrink)
If the cortex is an associative memory, strongly connected cell assemblies will form when neurons in different cortical areas are frequently active at the same time. The cortical distributions of these assemblies must be a consequence of where in the cortex correlated neuronal activity occurred during learning. An assembly can be considered a functional unit exhibiting activity states such as full activation (“ignition”) after appropriate sensory stimulation (possibly related to perception) and continuous reverberation of excitation within the assembly (a putative (...) memory process). This has implications for cortical topographies and activity dynamics of cell assemblies forming during language acquisition, in particular for those representing words. Cortical topographies of assemblies should be related to aspects of the meaning of the words they represent, and physiological signs of cell assembly ignition should be followed by possible indicators of reverberation. The following postulates are discussed in detail: (1) assemblies representing phonological word forms are strongly lateralized and distributed over perisylvian cortices; (2) assemblies representing highly abstract words such as grammatical function words are also strongly lateralized and restricted to these perisylvian regions; (3) assemblies representing concrete content words include additional neurons in both hemispheres; (4) assemblies representing words referring to visual stimuli include neurons in visual cortices; and (5) assemblies representing words referring to actions include neurons in motor cortices. Two main sources of evidence are used to evaluate these proposals: (a) imaging studies focusing on localizing word processing in the brain, based on stimulus-triggered event-related potentials (ERPs), positron emission tomography (PET), and functional magnetic resonance imaging (fMRI), and (b) studies of the temporal dynamics of fast activity changes in the brain, as revealed by high-frequency responses recorded in the electroencephalogram (EEG) and magnetoencephalogram (MEG). These data provide evidence for processing differences between words and matched meaningless pseudowords, and between word classes, such as concrete content and abstract function words, and words evoking visual or motor associations. There is evidence for early word class-specific spreading of neuronal activity and for equally specific high-frequency responses occurring later. These results support a neurobiological model of language in the Hebbian tradition. Competing large-scale neuronal theories of language are discussed in light of the data summarized. Neurobiological perspectives on the problem of serial order of words in syntactic strings are considered in closing. Key Words: associative learning; cell assembly; cognition; cortex; ERP; EEG; fMRI; language; lexicon; MEG; PET; word category. (shrink)
Neural organization: Structure, function, and dynamics shows how theory and experiment can supplement each other in an integrated, evolving account of the brain's structure, function, and dynamics. (1) Structure: Studies of brain function and dynamics build on and contribute to an understanding of many brain regions, the neural circuits that constitute them, and their spatial relations. We emphasize Szentágothai's modular architectonics principle, but also stress the importance of the microcomplexes of cerebellar circuitry and the lamellae of hippocampus. (2) Function: Control (...) of eye movements, reaching and grasping, cognitive maps, and the roles of vision receive a functional decomposition in terms of schemas. Hypotheses as to how each schema is implemented through the interaction of specific brain regions provide the basis for modeling the overall function by neural networks constrained by neural data. Synthetic PET integrates modeling of primate circuitry with data from human brain imaging. (3) Dynamics: Dynamic system theory analyzes spatiotemporal neural phenomena, such as oscillatory and chaotic activity in both single neurons and (often synchronized) neural networks, the self-organizing development and plasticity of ordered neural structures, and learning and memory phenomena associated with synaptic modification. Rhythm generation involves multiple levels of analysis, from intrinsic cellular processes to loops involving multiple brain regions. A variety of rhythms are related to memory functions. The Précis presents a multifaceted case study of the hippocampus. We conclude with the claim that language and other cognitive processes can be fruitfully studied within the framework of neural organization that the authors have charted with John Szentágothai. Key Words: cognitive maps; computational neuroscience; dynamics; hippocampus; memory; modular architectonics; neural modeling; neural organization; neural plasticity; rhythmogenesis; Szentágothai. (shrink)
Awareness is a personal experience, which is only accessible to the rest of world through interpretation. We set out to identify a neural correlate of visual awareness, using brief subliminal and supraliminal verbal stimuli while measuring cerebral blood flow distribution with H215O PET. Awareness of visual verbal stimuli differentially activated medial parietal association cortex (precuneus), which is a polymodal sensory cortex, and dorsolateral prefrontal cortex, which is thought to be primarily executive. Our results suggest participation of these higher order perceptual (...) and executive cortical structures in visual verbal awareness. (shrink)
Anxious temperament (AT) in human and non-human primates is a trait-like phenotype evident early in life that is characterized by increased behavioural and physiological reactivity to mildly threatening stimuli1–4. Studies in children demonstrate that AT is an important risk factor for the later development of anxiety disorders, depression and comorbid substance abuse5. Despite its importance as an early predictor of psychopathology, little is known about the factors that predispose vulnerable children to develop AT and the brain systems that underlie its (...) expression. To characterize the neural circuitry associated with AT and the extent to which the function of this circuit is heritable, we studied a large sample of rhesus monkeys phenotyped for AT. Using 238 young monkeys from a multigenerational single-family pedigree, we simultaneously assessed brain metabolic activity and AT while monkeys were exposed to the relevant ethological condition that elicits the phenotype. High-resolution 18F-labelled deoxyglucose positron-emission tomography (FDG–PET) was selected as the imaging modality because it provides semi-quantitative indices of absolute glucose metabolic rate, allows for simultaneous measurement of behaviour and brain activity, and has a time course suited for assessing temperament-associated sustained brain responses. Here we demonstrate that the central nucleus region of the amygdala and the anterior hippocampus are key components of the neural circuit predictive of AT. We also show significant heritability of the AT phenotype by using quantitative genetic analysis. Additionally, using voxelwise analyses, we reveal significant heritability of metabolic activity in AT-associated hippocampal regions. However, activity in the amygdala region predictive of AT is not significantly heritable. Furthermore, the heritabilities of the hippocampal and amygdala regions significantly differ from each other. Even though these structures are closely linked, the results suggest differential influences of genes and environment on how these brain regions mediate AT and the ongoing risk of developing anxiety and depression. Anxiety disorders are among the most common forms of psychopathology6, and frequently begin during childhood and adolescence. Although all children experience acute anxiety, children with AT display extreme behavioural and physiological reactivity to novel stimuli, and in the presence of strangers inhibit their locomotor activity and vocalizations3.. (shrink)
It’s been, for some time now, a pet thesis of ours that compositionality is the key constraint on theories of linguistic content. On the one hand, we’re convinced by the usual arguments that the compositionality of natural languages1 explains how L-speakers can understand any of the indefinitely many expressions that belong to L. 2 And, on the other hand, we claim that compositionality excludes all “pragmatist” 3 accounts of content; hence, practically all of the theories of meaning that have been (...) floated by philosophers and cognitive scientists for the last fifty years or so. A number of objections to our claim have been suggested to us, but none that we find persuasive (see, for example, the discussions of the “uniformity principle” and of “reverse compositionality” in Fodor and Lepore 2002). These objections have a common thread: they all grant that mental and linguistic content are compositional but challenge the thesis that compositionality is incompatible with semantic pragmatism. In this paper, we want to consider an objection of a fundamentally different kind, namely, that it doesn’t matter whether compositionality excludes semantic pragmatism because compositionality isn’t true; the content of an expression supervenes not on its linguistic structure4 alone but on its linguistic structure together with the context of its tokening. 5.. (shrink)
The method of positron emission tomography (PET imaging) illustrates the circular logic popular in subtractive neuroimaging and linear reductive cognitive psychology. Both require that strictly feed-forward, modular, cognitive components exist, before the fact, to justify the inference of particular components from images (or other observables) after the fact. Also, both require a "true" componential theory of cognition and laboratory tasks, before the fact, to guarantee reliable choices for subtractive contrasts. None of these possibilities are likely. Consequently, linear reductive analysis has (...) failed to yield general, reliable, componential accounts. (shrink)
A defence of constructive empiricism against an attack of N. Maxwell by means of his pet-thesis that science implicitly and permanently accepts a metaphysical thesis about the nature of the universe. We argue that Maxwell's attack can be beaten off; that his arguments do not establish what Maxwell believes they establish; and that we can draw a number of valuable lessons from these attacks about the nature of science and of the libertatian nature of constructive empiricism.
We present an instrument developed to explain to students the concept of the personal ethical threshold (PET). The PET represents an individual’s susceptibility to situational pressure in his or her organization that makes moral behavior more personally difficult. Further, the PET varies according to the moral intensity of the issue at hand, such that individuals are less vulnerable to situational pressure for issues of high moral intensity, i.e., those with greater consequences for others. A higher PET reflects an individual’s greater (...) likelihood of adhering to the morally correct path, even in the face of high situational pressures (personal costs) and low moral intensity (collective importance). PET questionnaires were completed by 506 students representing eight business schools throughout the United States. Relationships between respondents’ PET and their gender, age, and major field of study, as well as the geographical location of their school, are explored. Results indicate that older students have higher PETs and that students attending schools in the northeastern part of the United States have lower PETs. These findings are discussed. It is argued that the PET instrument can be used to help students identify organizational pressures and intrapersonal processes that can impede their moral behavior in organizations. (shrink)
This paper presents an experiential exercise introducing the concept of the personal ethical threshold (PET) to help explain why moral behavior does not always follow moral intention. An individual’s PET represents the individual’s vulnerability to situational factors, i.e., how little or much it takes for members of organizations to cross their proverbial line to act in a way they deem unethical. The PET reflects the interplay among the situation, the particular ethical issue, and the individual. Exploring the PET can help (...) account for why some people are sometimes able to withstand substantial organizational pressures to behave in congruence with their ethical intentions, whereas others crumble in the face of apparently minimal situational forces. We hope that students’ exposure to and subsequent reflection upon their PET, by means of the exercise we present, will foster the development of their moral courage. (shrink)
Computer ethics, or more broadly, Information Technology (IT) ethics, is often concerned with issues about privacy, accuracy, property and accessibility and framing of policies and rules on the features. While ethical issues on these topics are important, issues about IT ethics apply more broadly. The purpose of ethics is not just to draft new policies or legal codes. Ethics also aims to probe and bring into limelight for ethical deliberations those issues, which have escaped policy formulations or human introspection. This (...) paper tries to address one such ethical issue. This paper concerns with email ethics and with one of the features of emailing - ‘forwarding’. As an applied ethics domain, I have tried to use some samples of forwarded mails. Through the analysis of the given sample mails, I claim that (1) this issue of ‘forwarding’ falls well outside the domain of framing ethical policies and (2) it is a matter of ethical concern. I have addressed this ethical concern by drawing a criterion to judge if one’s act of ‘forwarding’ a mail is ethical act or not. (shrink)
“Privacy as confidentiality” has been the dominant paradigm in computer science privacy research. Privacy Enhancing Technologies (PETs) that guarantee confidentiality of personal data or anonymous communication have resulted from such research. The objective of this paper is to show that such PETs are indispensable but are short of being the privacy solutions they sometimes claim to be given current day circumstances. Using perspectives from surveillance studies we will argue that the computer scientists’ conception of privacy through data or communication confidentiality (...) is techno-centric and displaces end-user perspectives and needs in surveillance societies. We will further show that the perspectives from surveillance studies also demand a critical review for their human-centric conception of information systems. Last, we rethink the position of PETs in a surveillance society and argue for the necessity of multiple paradigms for addressing privacy concerns in information systems design. (shrink)
It’s been, for some time now, a pet thesis of ours that compositionality is the key constraint on theories of linguistic content. On the one hand, we’re convinced by the usual arguments that the compositionality of natural languages1 explains how L-speakers can understand any of the indefinitely many expressions that belong to L.2 And, on the other hand, we claim that compositionality excludes all “pragmatist”3 accounts of content; hence, practically all of the theories of meaning that have been floated by (...) philosophers and cognitive scientists for the last fifty years or so. A number of objections to our claim have been suggested to us, but none that we find persuasive (see, for example, the discussions of the “uniformity principle” and of “reverse compositionality” in Fodor and Lepore 2002). These objections have a common thread: they all grant that mental and linguistic content are compositional but challenge the thesis that compositionality is incompatible with semantic pragmatism. In this paper, we want to consider an objection of a fundamentally different kind, namely, that it doesn’t matter whether compositionality excludes semantic pragmatism because compositionality isn’t true; the content of an expression supervenes not on its linguistic structure4 alone but on its linguistic structure together with the context of its tokening.5.. (shrink)
Using positron emission tomography (PET) and regional cerebral blood flow (rCBF) measurements, we investigated the cerebral correlates of consciousness in a sequence learning task through a novel application of the Process Dissociation Procedure, a behavioral paradigm that makes it possible to separately assess conscious and unconscious contributions to performance. Results show that the metabolic response in the anterior cingulate / mesial prefrontal cortex (ACC / MPFC) is exclusively and specifically correlated with the explicit component of performance during recollection of a (...) learned sequence. This suggests a significant role for the ACC / MPFC in the explicit processing of sequential material. 2003 Elsevier Science B.V. All rights reserved. (shrink)
Using positron emission tomography (PET) and regional cerebral blood flow (rCBF) measurements, we investigated the cerebral correlates of consciousness in a sequence learning task through a novel application of the Process Dissociation Procedure, a behavioral paradigm that makes it possible to separately assess conscious and unconscious contributions to performance. Results show that the metabolic response in the anterior cingulate / mesial prefrontal cortex (ACC / MPFC) is exclusively and specifically correlated with the explicit component of performance during recollection of a (...) learned sequence. This suggests a significant role for the ACC / MPFC in the explicit processing of sequential material. 2003 Elsevier Science B.V. All rights reserved. (shrink)
If each of the subtypes of autism is defined simply as constituted by a set of symptoms, then the criteria for its observation are straightforward, although, of course, some of those symptoms themselves might be hard to observe definitively. Compare with telling whether or not someone is bleeding: while it might be hard to tell if someone is bleeding internally, we know what it takes to find out, and when we have the right access and instruments we can settle the (...) issue. But matters are not so simple for the autism subtypes. For one thing, how do we settle which symptoms to group together under one heading? One key difference between “autism disorder” and “Asperger’s disorder” is that the former exhibit language delays (sometimes extreme), whereas the latter do not. But is that a sign of genuinely distinct conditions or is that an artifact of the distinct groups of subjects that Leo Kanner and Hans Asperger worked with? And in general, although there are certainly types of behavior that are taken to be indicative of autism, none by itself is taken by diagnosticians to be either necessary or sufficient for a definitive diagnosis for any of the autism subtypes. What is the diagnostician to do? This is not merely an academic issue, as many parents can attest. Are we in a situation, then, that each practitioner has his or her own “pet” signs that are the “real keys” to the diagnosis? That would suggest that the term “autistic” might meet the fate of the outdated term “neurotic,” which turned out to be a pseudo-scientific term for an inexact clumping together of unrelated phenomena. The assumption amongst specialists seems to be that we will reach the point with "autism" that we have with "water": there will be a root essence to autism whose presence or absence settles a diagnosis. If that is to be the case, however, we have to settle the level of application of the concept. Does the term apply to people who exhibit particular behaviors? Or is it possible to exhibit “autistic” behaviors without actually being autistic, because autism is instead a particular feature of the mind (as, for example, in Baron-Cohen’s “impaired theory of mind module” theory, discussed below) which usually but not necessarily has behavioral effects? Or is autism located instead in the brain, perhaps in damage to key areas, which in turn would typically have an effect on modules of the mind? Or perhaps autism is located in genetics or biology, so that some people with damage to the brain caused by accidents so that they exhibit autistic symptoms would not actually be autistic. Conversely, supposing one had an “autistic brain” but showed none of (or not a sufficient number of) the symptoms, would one not be autistic? The assumption is that the genotypes and phenotypes will line up neatly, but if they do not, what happens to the concept “autistic?” (There is an analogy in the philosophy of sex and gender: androgen insensitive individuals tend to self-identify as female and have outward female traits, but have XY chromosomes—should we go with chromosomes or self-identity in assigning sex category?) Finally, the implications for these complications for diagnosis and categorization, with the attendant social and medical implications is discussed. The typical assumption of the medical profession is that autism cannot be “cured.” That assumes that autism is not simply the symptoms. However, at the same time, the tests used to diagnose ASDs work simply from the symptoms (for example, Baron-Cohen’s Sally/Anne test, which ASD children of a certain age almost all fail, but which practically no ASD adult fails). This implies an inherent confusion over the status of the concept. I conclude that attempts to make sense of some true or accurate summary of what it is to be autistic (such as one would find in the DSM) are almost certainly misguided and will vanish into history along with “neurotic.” But as with racial terms, which are similarly shifting and perverse, the term has already passed into the public sphere and will have a lasting and dangerous influence beyond its short scientific shelf-life. (shrink)
The study of conscious experience has seen remarkable strides in the last ten years, reflecting important technological breakthroughs and the enormous efforts of researchers in disciplines as varied as neuroscience, cognitive science, and philosophy. Although still embroiled in debate, scientists are now beginning to find common ground in their understanding of consciousness, which may pave the way for a unified explanation of how and why we experience and understand the world around us. Written by eminent psychologist Bernard J. Baars, Inside (...) the Theater of Consciousness: The Workspace of the Mind brings us to the frontlines of this exciting discipline, offering the general reader a fascinating overview of how top scientists currently understand the processes underlying conscious experience. Combining psychology with brain science, Baars brilliantly brings his subject to life with a metaphor that has been used to understand consciousness since the time of Aristotle--the mind as theater. Here consciousness is seen as a "stage" on which our sensations, perceptions, thoughts, and feelings play to a vast, silent audience (the immensely complicated inner-workings of the brain's unconscious processes). Behind the scenes, silent context operators shape conscious experience; they include implicit expectations, self systems, and scene setters. Using this framework, Baars presents compelling evidence that human consciousness rides on top of biologically ancient mechanisms. In humans it manifests itself in inner speech, imagery, perception, and voluntary control of thought and action. Topics like hypnosis, absorbed states of mind, adaptation to trauma, and the human propensity to project expectations on uncertainty, all fit into the expanded theater metaphor. As Baars explores our present understanding of the mind, he takes us to the top laboratories around the world, where we witness some of the field's most exciting breakthroughs and discoveries. (For instance, Baars recounts one extraordinary sequence of experiments, in which state-of-the-art PET scans--reproduced here in full color--capture in fascinating, graphic detail how brain activity changes as people learn how to play the computer game Tetris.) And throughout the book, Baars has sprinkled numerous and often highly amusing on-the-spot demonstrations that illuminate the ideas under discussion. Understanding consciousness is perhaps the most difficult puzzle facing the sciences today. In the Theater of Consciousness offers an invaluable introduction to the field, brilliantly weaving together the various theories that have emerged as scientists continue their quest to uncover the profound mysteries of the mind--and of human nature itself. (shrink)
Following the success of Sony Corporation’s “AIBO”, robot cats and dogs are multiplying rapidly. “Robot pets” employing sophisticated artificial intelligence and animatronic technologies are now being marketed as toys and companions by a number of large consumer electronics corporations. -/- It is often suggested in popular writing about these devices that they could play a worthwhile role in serving the needs of an increasingly aging and socially isolated population. Robot companions, shaped like familiar household pets, could comfort and entertain lonely (...) older persons. This goal is misguided and unethical. While there are a number of apparent benefits that might be thought to accrue from ownership of a robot pet, the majority and the most important of these are predicated on mistaking, at a conscious or unconscious level, the robot for a real animal. For an individual to benefit significantly from ownership of a robot pet they must systematically delude themselves regarding the real nature of their relation with the animal. It requires sentimentality of a morally deplorable sort. Indulging in such sentimentality violates a (weak) duty that we have to ourselves to apprehend the world accurately. The design and manufacture of these robots is unethical in so far as it presupposes or encourages this delusion. -/- The invention of robot pets heralds the arrival of what might be called “ersatz companions” more generally. That is, of devices that are designed to engage in and replicate significant social and emotional relationships. The advent of robot dogs offers a valuable opportunity to think about the worth of such companions, the proper place of robots in society and the value we should place on our relationships with them. (shrink)
In the context of debates about what form a theory of meaning should take, it is sometimes claimed that one cannot understand an intersective modifier-head construction (e.g., ‘pet fish’) without understanding its lexical parts. Neo-Russellians like Fodor and Lepore contend that non-denotationalist theories of meaning, such as prototype theory and theory theory, cannot explain why this is so, because they cannot provide for the ‘reverse compositional’ character of meaning. I argue that reverse compositionality is a red herring in these debates. (...) I begin by setting out some positive arguments for reverse compositionality and showing that they fail. Then I show that the principle of reverse compositionality has two big strikes against it. First, it is incompatible with all theories of meaning on the market, including the denotationalism favored by neo-Russellians. Second, it explains nothing that is not already explained by its venerable predecessor, the principle of (forward) compositionality. (shrink)
For more than a century the paradigm inspiringcognitive neuroscience has been modular and localist.Contemporary research in functional brain imaginggenerally relies on methods favorable to localizingparticular functions in one or more specific brainregions. Meanwhile, connectionist cognitive scientistshave celebrated the computational powers ofdistributed processing, and pioneered methods forinterpreting distributed representations. This papertakes a connectionist approach to functionalneuroimaging. A tabulation of 35 PET (positronemission tomography) experiments strongly indicatesdistributed function for at least the ''medium sized''anatomical units, the cortical Brodmann areas. Moreimportant, when these PET (...) experiments were interpretedas distributed representations, multidimensionalscaling revealed a ''brain activation space'' with asalient structure organized primarily by the sensorymodality of the stimulus, and secondarily by the typeof motor response. These results suggest that currentanalytical techniques in functional neuroimagingshould be augmented by distributed processinganalyses, and that these analyses may lead to manydiscoveries about the structure of ''inner space.''. (shrink)
: Taken at face value, pet cloning may seem at best a frivolous practice, costly both to the cloned pet's health and its owner's pocket. At worst, its critics say, it is misguided and unhealthy—a way of exploiting grief to the detriment of the animal, its owner, and perhaps even animal welfare in general. But if the great pains we are willing to take to clone Fido raise the status of companion animals in the public eye, then the practice might (...) be defensible. (shrink)
Objectives: Recent fMRI studies have shown that it is possible to reliably identify the defaultmode network (DMN) in the absence of any task, by resting-state connectivity analyses in healthy volunteers. We here aimed to identify the DMN in the challenging patient population of disorders of consciousness encountered following coma. Experimental design: A spatial independent component analysis-based methodology permitted DMN assessment, decomposing connectivity in all its different sources either neuronal or artifactual. Three different selection criteria were introduced assessing anticorrelation-corrected connectivity with (...) or without an automatic masking procedure and calculating connectivity scores encompassing both spatial and temporal properties. These three methods were validated on 10 healthy controls and applied to an independent group of 8 healthy controls and 11 severely brain-damaged patients [locked-in syndrome (n ¼ 2), minimally conscious (n ¼ 1), and vegetative state (n ¼ 8)]. Principal observations: All vegetative patients showed fewer connections in the default-mode areas, when compared with controls, contrary to locked-in patients who showed nearnormal connectivity. In the minimally conscious-state patient, only the two selection criteria considering both spatial and temporal properties were able to identify an intact right lateralized BOLD connectivity pattern, and metabolic PET data suggested its neuronal origin. Conclusions: When assess-. (shrink)
Evidence for a dichotomy between the planning of an action and its on-line control in humans is reviewed. This evidence suggests that planning and control each serve a specialized purpose utilizing distinct visual representations. Evidence from behavioral studies suggests that planning is influenced by a large array of visual and cognitive information, whereas control is influenced solely by the spatial characteristics of the target, including such things as its size, shape, orientation, and so forth. Evidence from brain imaging and neuropsychology (...) suggests that planning and control are subserved by separate visual centers in the posterior parietal lobes, each constituting part of a larger network for planning and control. Planning appears to rely on phylogenetically newer regions in the inferior parietal lobe, along with the frontal lobes and basal ganglia, whereas control appears to rely on older regions in the superior parietal lobe, along with the cerebellum. Key Words: action; apraxia; control; illusions; optic ataxia; PET; planning; reaching;. (shrink)
The study of conscious experience per se has not kept pace with the dramatic advances in PET, fMRI and other brain-scanning technologies. If anything, the standard approaches to examining the 'view from within' involve little more than cataloguing its readily accessible components. Thus the study of lived subjective experience is still at the level of Aristotelian science, leading to a widespread scepticism over the possibility of a truly scientific study of conscious experience. Drawing on a wide range of approaches -- (...) from phenomenology to meditation -- The View From Within examines the possibility of a disciplined approach to the study of subjective states. The focus is on the practical issues involved. (shrink)
While philosophers have, for centuries, pondered upon the relation between mind and brain, neuroscientists have only recently been able to explore the connection analytically — to peer inside the black box. This ability stems from recent advances in technology and emerging neuroimaging modalities. It is now possible not only to produce remarkably detailed images of the brain’s structure (i.e. anatomical imaging) but also to capture images of the physiology associated with mental processes (i.e. functional imaging). We are able to see (...) how specific regions of the brain ‘light up’ when activities such as reading this book are performed, and how our neurons and their elaborate cast of supporting cells organize and coordinate their tasks. As demonstrated in the other chapters of this book, the mapping of the human mind (mostly by measuring regional changes in blood flow, initially by positron emission tomography (PET) and recently by functional magnetic resonance imaging or (fMRI)) has provided insight into the functional neuroanatomy of neuropsychiatric diseases. Amazingly, the idea that regional cerebral blood flow (rCBF) is related intimately to brain function goes back more than a century. As is often the case in science, this idea was initially the result of unexpected observations. The Italian physiologist Angelo Mosso first expressed the idea while studying pulsations of the living human brain that keep pace with the heartbeat (Mosso, 1881). These brain pulsations can be observed on the surface of the fontanelles in newborn children. Mosso believed that they reflected blood flow to the brain. He observed similar pulsations in an adult with a post-traumatic skull defect over the frontal lobes. While studying this subject, a peasant named Bertino, Mosso observed a sudden increase in the magnitude of the ‘brain’s heart-beats’ when the church bells signalled 12 o’clock, the time for a required prayer. The changes in brain pulsations occurred independently of any change in pulsations in the forearm.. (shrink)
Early theorists (Freud and Darwin) speculated that extremely shy children, or those with anxious temperament, were likely to have anxiety problems as adults. More recent studies demonstrate that these children have heightened responses to potentially threatening situations reacting with intense defensive responses that are characterized by behavioral inhibition (BI) (inhibited motor behavior and decreased vocalizations) and physiological arousal. Confirming the earlier impressions, data now demonstrate that children with this disposition are at increased risk to develop anxiety, depression, and comorbid substance (...) abuse. Additional key features of anxious temperament are that it appears at a young age, it is a stable characteristic of individuals, and even in non-threatening environments it is associated with increased psychic anxiety and somatic tension. To understand the neural underpinnings of anxious temperament, we performed imaging studies with 18- fluoro-deoxyglucose (FDG) high-resolution Positron Emission Tomography (PET) in young rhesus monkeys. Rhesus monkeys were used because they provide a well validated model of anxious temperament for studies that cannot be performed in human children. Imaging the same animal in stressful and secure contexts, we examined the relation between regional metabolic brain activity and a trait-like measure of anxious temperament that encompasses measures of BI and pituitaryadrenal reactivity. Regardless of context, results demonstrated a trait-like pattern of brain activity (amygdala, bed nucleus of stria terminalis, hippocampus, and periaqueductal gray) that is predictive of individual phenotypic differences. Importantly, individuals with extreme anxious temperament also displayed increased activity of this circuit when assessed in the security of their home environment. These findings suggest that increased activity of this circuit early in life mediates the childhood temperamental risk to develop anxiety and depression.. (shrink)
It is very tempting to try to reconcile perception and cognition perceptual symbol systems may be a good way to achieve this; but is there actually a perception-cognition continuum? We offer several arguments for and against the existence of such a continuum and in favor of the choice of perceptual symbol systems. One of these arguments is purely theoretical, some are based on PET-scan observations and others are based on research with handicapped subjects who have communication problems associated with cerebral (...) lesions. These arguments suggest that modal perceptual symbols do indeed exist and that perception and cognition might have a common neuronal basis; but perceptual and cognitive activities require the activation of different neuronal structures. (shrink)
My primary concern will be to cast light upon the relation between animal guardians ('pet owners') and pets as a deep relation. I will proceed with a degree of indirectness by explaining why animal guardians can have an epistemically-privileged position when it comes to end-of-life decisions concerning pets. My contention is that they are best placed to grasp the relevant narrative considerations upon which end-of-life deliberation in marginal cases ought to depend. Such narrative-appreciation is built into the practice of treating (...) animals as pets. By virtue of having such a narrative appreciation, animal guardians can be best placed to grasp the life-role of pain and suffering. (shrink)
For many liberal democrats toleration has become a sort of pet-concept, to which appeal is made in the face of a myriad issues related to the treatment of minorities. Against the inflationary use of toleration, whether understood positively as recognition or negatively as forbearance, I argue that toleration may not provide the conceptual and normative tools to understand and address the claims for accommodation raised by at least one kind of significant minority: democratic dissenting minorities. These are individuals, or aggregates (...) of them, who oppose, on principled grounds, the outcomes of the majoritarian decision-making process. I argue that democratic dissenting minorities' claims are better understood as calls for respect for a person's capacity for self-legislation. I view respect as the cornerstone of justice in a liberal democracy: all norms resulting in a constraint on a person's conduct should be appropriately justified to her. I argue that the reconciliation of democratic dissenting minorities' claims requires an enhancement of the justificatory strategies of democratic decisions by enhancing in turn citizens' rights to political participation. This should be done both during decision making and after a provision is enacted by also securing space for contestation through such forms of illegal protest as civil disobedience and conscientious objection. (shrink)
The advent of functional imaging has reinforced the attempts to define dreaming as a sleep state-dependent phenomenon. PET scans revealed major differences between nonREM sleep and REM sleep. However, because dreaming occurs throughout sleep, the common features of the two sleep states, rather than the differences, could help define the prerequisite for the occurrence of dreams. [Hobson et al.; Nielsen; Solms; Revonsuo; Vertes & Eastman].
Reading is an amazing skill. As you read this review, meaning flows from the page (or for many readers, the screen) into your brain. This happens automatically—you can’t choose not to understand the written word any more than the spoken one. It’s also highly efficient. Most people can process text two or three times faster than speech. Of course, humans have many amazing skills. We also identify objects, decode speech, and understand complex social situations automatically and efficiently. However, the machinery (...) in the brain that gives us these abilities, and many more, was plausibly constructed by natural selection, and, if so, they are adaptations just like our peculiar pelvis and the thick enamel on our molars. Reading arose a few thousand years ago, and this means that machinery in the brain that allows us to read did not evolve for that purpose. Instead, a series of scribes, priests, and printers working over a few thousand years gradually devised the writing systems that give rise to this amazing skill. In this fascinating book, Stanislaus Dehaene details how cognitive abilities evolved for other purposes were co-opted for reading, how these abilities are instantiated in the brain, and how they constrain the cultural evolution of writing systems. Dehaene does an excellent job explaining how reading works at both the neurobiological and cognitive levels. He takes the reader seriously, laying out diverse kinds of evidence that bear on the problem. For example, when you read, visual information is shunted to a small region in the left hemisphere of your brain, the brain’s ‘‘letter box’’ where the text is decoded. The earliest evidence for this came from the autopsy of a 19th century French stroke victim who lost the ability to read, even though he could still recognize numerals. More recently, PET and fMRI imaging studies have pinned down the location. Amazingly, these results show that it doesn’t matter whether you read Italian or Chinese, the same part of the brain is involved. Electroencephalograms gave us a better temporal resolution, and single neuron recordings of patients undergoing surgery confirm that only some neurons respond to text while others respond to faces, tools.. (shrink)
Hume was certainly tackling a ‘long disputed question’ under his heading Of liberty and necessity. If our actions are causally determined, can we still maintain that we are capable of acting freely? Or does our deeply-rooted commitment to regarding other people as morally responsible agents also commit us to regarding them as exceptions to the general order of nature and, at some level, somehow exempt from the operation of causal laws? By now this has been disputed even longer, whether we (...) call it the Problem of Free Will and (or versus) Determinism, or the topic of Moral Responsibility and Causal Determination. The basic issue is familiar enough to be referred to as an ‘old chestnut’ – which, in my view, implies we ought to have cracked it by now. Actually, I do believe that the position usually referred to nowadays as Compatibilism provides a solution to this problem, and no doubt this influences the view I take of Hume’s treatment of the topic. In order to relate Hume’s contribution to subsequent discussions and to the accumulated terminology of the debate, it will be useful to have a general scheme of the main positions in mind. Call the assumption that people – at any rate, normal adults – do have the capacity to act freely and are therefore morally responsible for their actions the Free Will Assumption. Evidently this is an assumption that we implicitly make in many different ways. For example, if a rottweiler attacks and injures a child, we may be shocked by the injuries and loathe and fear the dog that inflicted them. But we don’t blame the dog, because such an animal is not an appropriate target for that attitude: it cannot help the savagery which is part of its nature. And if the dog is put down, this is for reasons of safety, to prevent a repetition of the attack. It is not an execution. We take a different attitude to the dog’s owner, who should perhaps have foreseen the possibility of such an attack, and who in any case has a responsibility to control so dangerous a pet. What Hume calls ‘the doctrine of necessity’ is the Principle of Determinism, according to which all events (including all human actions) are entirely the result of prior causes.. (shrink)
Are there limits on how human beings can legitimately treat non-human animals? Or can we treat them just any way we please? If there are limits, what are they? Are they sufficiently strong, as some people supp ose, to lead us to be vegetarians and to seriously curtail, if not eliminate, our use of non-human animals in `scientific' experiments designed to benefit us? To fully appreciate this question let me contrast it with two different ones: Are there limits on how (...) we can legitimately treat rocks? And: are there limits on how we can legitima tely treat other human beings? The an swer to th e first ques tion is pre suma bly `No.' Well, that's not q uite right. There are som e limits on what w e can le gitimate ly do with or to rocks. If Paula has a pet rock, then Susan can't justifiably take it away or smash it with a sledge hammer. After all it is Paula's rock. (shrink)
Positron emission tomography (PET) is a frontiermedical technology that, in contrast to the othercomputer-assisted technologies providing anatomicalpictures, produces functional images. I argue that PETalso opens up an avenue for shifting from images (asa tool for representation of biomedical data) back toanalysis of measurements (as a tool for quantificationof physiology). Admittedly, quantification of functionrequires structural constraints. I coined the emerginginterpretational framework quantitative anatomyin an attempt to conceptualize the PET merger betweenmeasuring and imaging, the two competing meansmedicine uses to examine the human (...) body. Anatomyjustifies interpretations that fit the existingknowledge of a larger clinical audience, whilestatistical data possess an unexplored potential tointroduce mathematical rigor in the evaluation offunction, but are still a black box for the majorityof clinicians. This epistemological change is beingcarried out by PET users in action as well as indiscourse. (shrink)
Possible systemic effects of general anesthetic agents on neural information processing are discussed in the context of the thalamocortical suppression hypothesis presented by Drs. Alkire, Haier, and Fallon (this issue) in their PET study of the anesthetized state. Accounts of the neural requisites of consciousness fall into two broad categories. Neuronal-specificity theories postulate that activity in particular neural populations is sufficient for conscious awareness, while process-coherence theories postulate that particular organizations of neural activity are sufficient. Accounts of anesthetic narcosis, on (...) the other hand, explain losses of consciousness in terms of neural signal-suppressions, transmission blocks, and the disruptions of signal interpretation. While signal-suppression may account for the actions of some anesthetic agents, the existence of anesthetics, such as choralose, that cause both loss of consciousness and elevated discharge rates, is problematic for a general theory of narcosis that is based purely on signal suppression and transmission-block. However, anesthetic agents also alter relative firing rates and temporal discharge patterns that may disrupt the coherence of neural signals and the functioning of the neural networks that interpret them. It is difficult at present, solely on the basis of regional brain metabolic rates, to test process-coherence hypotheses regarding organizational requisites for conscious awareness. While these pioneering PET studies have great merit as panoramic windows of mind-brain correlates, wider ranges of theory and empirical evidence need to be brought into the formulation of truly comprehensive theories of consciousness and anesthesia. (shrink)
In two H215O PET scan experiments, we investigated the cerebral correlates of explicit and implicit knowledge in a serial reaction time (SRT) task. To do so, we used a novel application of the Process Dissociation Procedure, a behavioral paradigm that makes it possible to separately assess conscious and unconscious contributions to performance during a subsequent sequence generation task. To manipulate the extent to which the repeating sequential pattern was learned explicitly, we varied the pace of the choice reaction time task—a (...) variable that is known to have differential effects on the extent to which sensitivity to sequence structure involves implicit or explicit knowledge. Results showed that activity in the striatum subtends the implicit component of performance during recollection of a learned sequence, whereas the anterior cingulate/mesial prefrontal cortex (ACC/MPFC) supports the explicit component. Most importantly, we found that the ACC/MPFC exerts control on the activity of the striatum during retrieval of the sequence after explicit learning, whereas the activity of these regions is uncoupled when learning had been essentially implicit. These data suggest that implicit learning processes can be successfully controlled by conscious knowledge when learning is essentially explicit. They also supply further evidence for a partial dissociation between the neural substrates supporting conscious and nonconscious components of performance during recollection of a learned sequence. (shrink)
Who's better? Billie Holiday or P.J. Harvey? Blur or Oasis? Dylan or Keats? And how many friendships have ridden on the answer? Such questions aren't merely the stuff of fanzines and idle talk; they inform our most passionate arguments, distil our most deeply held values, make meaning of our ever-changing culture. In Performing Rites, one of the most influential writers on popular music asks what we talk about when we talk about music. What's good, what's bad? What's high, what's low? (...) Why do such distinctions matter? Instead of dismissing emotional response and personal taste as inaccessible to the academic critic, Simon Frith takes these forms of engagement as his subject and discloses their place at the very centre of the aesthetics that structure our culture and colour our lives. -/- Taking up hundreds of songs and writers, Frith insists on acts of evaluation of popular music as music. Ranging through and beyond the twentieth century, Performing Rites puts the Pet Shop Boys and Puccini, rhythm and lyric, voice and technology, into a dialogue about the undeniable impact of poplar aesthetics on our lives. How we nod our heads or tap our feet, grin or grimace or flip the dial; how we determine what's sublime and what's for real -- these are part of the way we construct our social identities, and an essential response to the performance of all music. Frith argues that listening itself is a performance, both social gesture and bodily response. From how they are made to how they are received, popular songs appear here as not only meriting aesthetic judgements but also demanding them, and shaping our understanding of what all music means. (shrink)
K L Kahlbaum published in 1874 the first recorded description of catatonia. Akinetic catatonia is now defined as a neuropsychiatric syndrome principally characterised by akinesia, mutism, stupor, and catalepsy. 1 Even if some advances have been made in the recognition of catatonia, in particular by the development of different rating scales, 1 the pathophysiology of this syndrome is not clearly established. A right handed 14 year old girl presented with akinetic catatonia during an episode of depression in the context of (...) a bipolar type I disorder. Her catatonic status was characterised by akinesia with brief episodic spontaneous stereotyped movements, mutism, no spontaneous oral intake, catalepsy, waxy flexibility, and stupor with brief occasional eye contacts. This corresponded to a total score of 19 on the Northoff Catatonia Scale.1 Electroencephalogram performed one day after onset of symptoms showed diffuse theta activity with sporadic diffuse delta activity. Cerebral magnetic resonance imaging was normal. Brain positron emission tomographies (PET) were obtained on a CTI-Siemens HR+ tomograph. A first PET (PET1) using (18F(- fluorodeoxyglucose (FDG) was performed on day 2 in a drug free state. Thereafter, intramuscular injection of 2 mg of lorazepam induced rapid clinical remission of the akinetic phase. Oral lorazepam was then given (3.75 mg/day) during five days. On day 8, a second PET with FDG was performed while the patient was treated by olanzapine (15 mg/day) and presented hyperactivity, logorrhoea, and disinhibition characterised by uncontrolled social interactions and physical contacts. Neuropsychological testing performed some days after remission revealed no apraxia or language disturbances but dysfunction of executive tasks manifested in the revised Wisconsin card sorting, the Tower of London, Stroop, and Trailmaking tests. Voxel based analyses comparing patient’s cerebral glucose metabolism with that of 29 right handed healthy controls (16 women and 13 men, mean age 32) were performed using Statistical Parametric Mapping (SPM99) (Wellcome Department of Cognitive Neurology, London, UK).. (shrink)
(although the FOF, unlike the CNF, is still a theorem). The correct version of Problem 62 is (following the format of (Pelletier, 1986)): Natural FOF Negated Conclusion CNF (Ax)r(Pet~(Px m Pf(x))) m Pf(f(x))] Pet Px+ P f(f(x)) + -Pa..
1 There is a Standard Objection to the idea that concepts might be prototypes (or exemplars, or stereotypes): Because they are productive, concepts must be compositional. Prototypes aren't compositional, so concepts can't be prototypes (see, e.g., Margolis, 1994).2 However, two recent papers (Osherson and Smith, 1988; Kamp and Partee, 1995) reconsider this consensus. They suggest that, although the Standard Objection is probably right in the long run, the cases where prototypes fail to exhibit compositionality are relatively exotic and involve phenomena (...) which any account of compositionality is likely to find hard to deal with; for example, the effects of quantifiers, indexicals, contextual constraints, etc. KP are even prepared to indulge a guarded optimism: "... when a suitably rich compositional theory... is developed, prototypes will be seen ... as one property among many which only when taken altogether can support a compositional theory of combination" (p.56). In this paper, we argue that the Standard Objection to prototype theory was right after all: The problems about compositionality are insuperable in even the most trivial sorts of examples; it is therefore as near to certain as anything in cognitive science ever gets that the structure of concepts is not statistical. Theories of categorization, concept acquisition, lexical meaning and the like, which assume the contrary simply don't work. We commence with a general discussion of the constraints that an account of concepts must meet if their compositionality is to explain their productivity. We'll then turn to a criticism of proposals that OS2 and KP make for coping with some specific cases. (shrink)
Perhaps the commonest reasons for the keeping of pets are companionship and as a conduit for affection. Pets are, therefore, being “used” for human ends in much the same way as laboratory or farm animals. So shouldn’t the same arguments apply to the use of pets as to those used in other ways? In accepting the “rights” of farm animals to fully express their natural behavior, one must also accept the “right” of pets to express their intrinsic natural behavior. Dogs (...) kept in houses for most of the day are being kept in an unnatural environment. So are rabbits kept in hutches, and guinea-pigs or birds in cages. These conditions infringe the animals’ telos. Dogs are naturally pack animals, so is a dog in isolation being denied its telos? Other actions more deliberately infringe telos and autonomy. Enforced shampooing – or even exercise; hair-cutting of poodles; putting animals in clothes; and tail-docking. If de-beaking of chickens is considered wrong, then the same must be true for tail-docking of dogs. One should also question the ethics of specialist breeding – especially when that results in physiological disadvantages (boxers with breathing troubles). There would appear to be no advantage to the animals in having such health problems and when these are the direct result of the breeders’ desire for specific cosmetic traits, we should question the ethics of the practice at least as much as when animals are bred for specific agricultural traits. (shrink)
Machine generated contents note: ContentsIntroduction: A Change of Heart1. What's behind Animal Advocacy? -- 2. The Love of a Dog: Of Pets and Puppy Mills, Mixed-Breeds and Shelters -- 3. The Animal on Your Plate: Farmers, Vegans, and Locavores -- 4. Where the Wild Things Ought to Be: Sanctuaries, Zoos, and Exotic Pets -- 5. From Object to Subject: Animals in Scientific Research -- 6. Clothing Ourselves in Stories of Love: Affect and Animal AdvocacyConclusion: Trouble in the PackAcknowledgments -- Notes (...) -- Bibliography -- Index. (shrink)
Virtually all political theory and ethical systems presuppose the primacy of human beings. Abstract human beings have rights, privileges, legal standing, and-it is said-claims to our sympathy. Many political debates, therefore, center on questions of where these lines are to be drawn. But many humans do not behave this way. People, for example, may expend far more love, time, money, and energy on their pets' well-being than on abstract humans. If the choice is between an operation to save their dog's (...) life, or saving a human life through the United Nations, for example, most will choose the former, even if put in such stark terms. This essay argues that people's love for their dogs transcends the human/animal barrier, that this love overturns assumptions about the role of abstraction in our lives, and that such attunement can be understood only via new formulations of the roles of ethics and philosophy. (shrink)
No presente artigo, pretende-se expor e analisar as críticas que Noam Chomsky (2000) dirige contra o materialismo em filosofia da mente. Para o referido autor, a rigor, não faria sentido questionar o estatuto ontológico da mente, na medida em que os próprios físicos e filósofos materialistas desconhecem 90% da matéria que constitui o universo (a matéria e energia escuras). Deste modo, Chomsky dirá que no tempo de Descartes, da filosofia mecânica, o que se fazia era ciência normal, ao passo que (...) após o advento das ideias de Newton, o universo passa a ser antimaterialista. O presente trabalho pode ser útil/valioso à filosofia e história das ciências naturais, à física e à filosofia da mente. Palavras-chave: Materialismo; Matéria Escura; Filosofia Mecânica.The aim of this paper is to expose and analyze Noam Chomsky’s criticisms against materialism in philosophy of mind. For this author, strictly speaking, questioning the ontological status of the mind would not make sense, considering that the materialistic physicists and philosophers themselves are unaware of 90% of the matter that constitutes the universe (dark matter and energy). Accordingly, Chomsky will say that in Descartes’ time, or in times of mechanical philosophy, what was done was normal science, while after the advent of Newton's ideas the universe becomes anti-materialist. This paper can be useful/valuable to philosophy and history of natural sciences, physics and philosophy of mind. Keywords: Materialism; Dark Matter; Mechanical Philosophy. (shrink)
Preparing for the journey -- Memory: who am I? -- True being -- The Lucifer effect -- Blame is socially contagious -- The spiritual quest -- The meaning of it all -- Pets and an afterlife -- Crime and punishment -- The dream within the dream -- A rich inner life -- Love thy neighbor -- What if there were no chapter 13? -- Pursuit of happiness -- The drive for power -- Innocent -- Camelot -- Human rights -- E (...) followed by F -- Certainty -- Biases? -- Growing up -- Meaning: it's all a simulation -- The little lie -- Discernment -- The unexamined life -- Conclusion: the exam. (shrink)
Introduction: Facts and values -- Challenge and response -- Sentience, sense, and suffering -- Husbandry and welfare on the farm : assessment and assurance -- Animals for food : industrialised farming, pigs, and poultry -- Animals for food : cattle and other ruminants -- Animals for food : handling, transport, and slaughter -- Animals, science, and biotechnology -- Animals for sport -- Animals for pets -- Limping towards Eden : stepping stones.
We commonly identify something seriously defective in a human life that is lived in ignorance of important but unpalatable truths. At the same time, some degree of misapprehension of reality may be necessary for individual health and success. Morally speaking, it is unclear just how insistent we should be about seeking the truth. Robert Sparrow has considered such issues in discussing the manufacture and marketing of robot ‘pets’, such as Sony’s doglike ‘AIBO’ toy and whatever more advanced devices may supersede (...) it. Though it is not his only concern, Sparrow particularly criticizes such robot pets for their illusory appearance of being living things. He fears that some individuals will subconsciously buy into the illusion, and come to sentimentalize interactions that fail to constitute genuine relationships. In replying to Sparrow, I emphasize that this would be continuous with much of the minor sentimentality that we already indulge in from day to day. Although a disposition to seek the truth is morally virtuous, the virtue concerned must allow for at least some categories of exceptions. Despite Sparrow’s concerns about robot pets (and robotics more generally), we should be lenient about familiar, relatively benign, kinds of self-indulgence in forming beliefs about reality. Sentimentality about robot pets seems to fall within these categories. Such limited self-indulgence can co-exist with ordinary honesty and commitment to truth. (shrink)
In our dealings with our pets, and larger animals in general, at least most of us see them as conscious beings. We say “the cat feels pain” ascribing sensation. We notice “My cat wants to get in the kitchen because she thinks there is some cheese left” ascribing beliefs and desires. Explanations likes these can be employed on a variety of occasions, and usually we are content with what they say. We seem to understand why our cat is doing what (...) she does. On the other hand the employment of human categories to animals seems to be problematic. Reflecting on the details of human beliefs, for example, casts serious doubt on whether the cat is able to believe anything at all. Clever as they are none of my cats has the concept of kitchen , because a kitchen is – roughly – a functional part of an artificial dwelling (a house). Since cats do not built houses and do not prepare their food, the place the cat is walking into cannot be conceptualized by the cat as kitchen . Even the concept of cheese in its generality (made out of goat or cow milk, or camel milk …) is beyond the cat. So when we say what our cat believes and wishes we use our concept, in fact express a belief that a human being might have in a similar situation. What, then, does the cat have? Does a cat have beliefs? Or at least something like beliefs? (shrink)
By giving sympathy a central role, Adam Smith’s Theory of Moral Sentiments (1759) can be regarded as one of the ‘enlightened’ moral theories of the Enlightenment, insofar as it widened the scope of moral consideration beyond the traditionally restricted boundary of human beings. This, although the author himself does not seem to have been aware of this fact. In this paper, I want to focus on two aspects which I think lead to this conclusion. First, by making sentience the requisite (...) to be taken into moral consideration, nonhuman animals in Smith’s moral theory can count as moral patients towards whom we should exercise the virtue of beneficence (if not justice). Secondly, Smith’s idea of morality as working in concentric circles –generating more stringent duties towards those closer to us– could explain and perhaps also justify our caring for some nonhuman animals, especially pets. (shrink)
Not so long ago, any form of sexuality not leading to the conception of children was seen as, at best, wanton lust, or worse, a perversion. One by one, the taboos have fallen. The idea that it could be wrong to use contraception in order to separate sex from reproduction is now merely quaint. If some religions still teach that masturbation is "selfabuse," that just shows how out of touch they have become. Sodomy? That's all part of the joy of (...) sex, recommended for couples seeking erotic variety. In many of the world's great cities, gays and lesbians can be open about their sexual preferences to an extent unimaginable a century ago. You can even do it in the U.S. Armed Forces, as long as you don't talk about it. Oral sex? Some objected to President Clinton' choice of place and partner, and others thought he should have been more honest about what he had done, but no one dared suggest that he was unfit to be President simply because he had taken part in a sexual activity that was, in many jurisdictions, a crime. (shrink)
