Proposition 1 is based on the received Aristotelian analysis of intentional action and a commonsense view about understanding. Proposition 2 represents a consensus view among primatologists about the absence of higher order “theory of mind” capacities in monkeys. Proposition 3 reflects a common interpretation of the functions of so-called “mirror neurons” found in the ventral premotor (F5) cortex of macaque monkeys (e.g., Gallese and Goldman 1998; Rizzolatti and Craighero 2004; Fogassi et al. 2005). Taken at face value, then, this inconsistent (...) triad presents a paradox for understanding the contribution of F5 neurons in macaques to their cognitive capacities. This paradox does not arise for humans because the human analogue to proposition 2 is the obvious candidate for rejection. Nevertheless, the considerations relevant to resolving the paradox for monkeys are also important for a properly skeptical interpretation of the neurological evidence about the mirror neuron system in humans (see Debes, submitted). In this chapter I discuss each of the possibilities for resolving the paradox by rejecting one of the three propositions. Although my philosophical sympathies pError (27674): Unknown form typeError (27725): Unknown form typeError (27815): Unknown form typeresently lie with rejecting proposition 1, some of the arguments depend on empirical knowledge that is presently lacking. Nevertheless, I describe an approach to understanding the functions of F5 mirror.. (shrink)

Multi-voxel pattern analysis (MVPA) is a popular analytical technique in neuroscience that involves identifying patterns in fMRI BOLD signal data that are predictive of task conditions. But the technique is also frequently used to make inferences about the regions of the brain that are most important to the tasks in question, and our analysis shows that this is a mistake. MVPA does not provide a reliable guide to what information is being used by the brain during cognitive tasks, nor where (...) that information is. This is due in part to inherent run to run variability in the decision space generated by the classifier, but there are also several other issues, discussed below, that make inference from the characteristics of the learned models to relevant brain activity deeply problematic. These issues have significant implications both for many papers already published, and for how the field uses this technique in the future. (shrink)

Byrne & Russon's account of program imitation in primates involves propositional attitudes (expectations and goals), which limits its falsifiability. Yet their account of priming shows exactly how imitation without attitudes would look. The challenge is to upgrade the notion of priming to give an account of low-level program imitation without invoking propositional attitudes.

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)

AristotleÕs central argument for teleologyÑthough not necessarily his conclusionÑis repeated in the teleological arguments of Isaac Newton, Immanuel Kant, William Paley, and Charles Darwin. To appreciate AristotleÕs argument and its influence I assert, first, that AristotleÕs naturalistic teleology must be distinguished from PlatoÕs anthropomorphic one; second, the form of AristotleÕs arguments for teleology should be read as instances of inferences to the best explanation. On my reading, then, both NewtonÕs and PaleyÕs teleological arguments are Aristotelian while their conclusions are (...) Platonic. Kant and DarwinÕs arguments are likewise Aristotelian while their conclusions are unique. (shrink)

Attention research with prefrontal patients supports Merker's argument regarding the crucial role for the midbrain in higher cognition, through largely overlooked and misunderstood prefrontotectal connectivity. However, information theoretic analyses reveal that both exogenous (i.e., collicular) and endogenous (prefrontal) sources of information are responsible for large-scale context-sensitive brain dynamics, with prefrontal cortex being at the top of the hierarchy for cognitive control. (Published Online May 1 2007).

Phillips & Silverstein argue that a range of cognitive disturbances in schizophrenia result from a deficit in cognitive coordination attributable to NMDA receptor dysfunction. We suggest that the viability of this hypothesis would be further supported by explicit implementation in a computational framework that can produce quantitative estimates of the behavior of both healthy individuals and individuals with schizophrenia.

Philosophical Psychology, Volume 0, Issue 0, Page 1-5, Ahead of Print.

The insight that, in terms of behaviour control, the mesodiencephalic system is superordinate to the cortex should have profound implications for behavioural sciences. Nevertheless, the thalamocortical system could still be deemed an “organ of consciousness” if we came to accept that consciousness is not central to purposeful behaviour, in accordance with instinct theory. Philosophically, Merker's concepts of basic consciousness and ego-centre warrant critical discussion. (Published Online May 1 2007).

The advent of functional brain imaging has revolutionized the ability to understand the biological mechanisms underlying decision-making. Although it has been amply demonstrated that assumptions of rationality often break down in experimental games, there has not been an overarching theory of why this happens. I describe recent advances in functional brain imaging and suggest a framework for considering the function of the human reward system as a discrete agent.

Philosophical Psychology, Volume 0, Issue 0, Page 1-5, Ahead of Print.

Dysfunctions of the neural circuits that implement social behavior are necessary but not a sufficient condition to develop schizophrenia. We propose that schizophrenia represents a disease of general connectivity that impairs not only the “social brain” networks, but also different neural circuits related with higher cognitive and perceptual functions. We discuss possible mechanisms and evolutionary considerations.

I will describe two non-standard ways of thinking about time. The first is ubiquitous in animal cognition. I will call it ‘phase time’. Suppose for example you consider a hibernating animal. This animal might have representation of the various seasons of the year, and modulate its actions dependent on the season. But it need have no distinction between the winter of one year and the winter of another; it thinks of time only in terms of repeatable phases.

Can one be ill and happy? I use a phenomenological approach to provide an answer to this question, using Merleau-Ponty’s distinction between the biological and the lived body. I begin by discussing the rift between the biological body and the ill person’s lived experience, which occurs in illness. The transparent and taken for granted biological body is problematised by illness, which exposes it as different from the lived experience of this body. I argue that because of this rift, the experience (...) of illness cannot be captured within a naturalistic view and propose to supplant this view with a phenomenological approach. The latter approach accounts for changes in the ill person’s relationship to her social and physical world. These changes, I argue, cannot be captured by a naturalistic perspective. I then propose the notion of health within illness as a useful concept for capturing the experience of well-being reported by some ill people. I present empirical evidence for this phenomenon and assess its philosophical significance. Finally, I suggest that adaptability and creativity are two common positive responses to illness, demonstrating that health within illness is possible. The three elements combined – the transformed body, health within illness and adaptability and creativity – serve as the basis for a positive answer to the question posed above. (shrink)

v. 1. Half brain fables and figs in paradise -- v. 2. The corpus and the cortex -- v. 3. Scorpions and the anatomy of time.

The basal and reciprocal models of the relationship between androgen secretion and dominance are not mutually exclusive. Individuals may differ in basal levels of androgen secretion, reactivity to experiences, and androgen sensitivity. Early experiences might affect any of these parameters.

We discuss the development of cognitive neuroscience in terms of the tension between the greater sophistication in cognitive concepts and methods of the cognitive sciences and the increasing power of more standard biological approaches to understanding brain structure and function. There have been major technological developments in brain imaging and advances in simulation, but there have also been shifts in emphasis, with topics such as thinking, consciousness, and social cognition becoming fashionable within the brain sciences. The discipline has great promise (...) in terms of applications to mental health and education, provided it does not abandon the cognitive perspective and succumb to reductionism. (shrink)

This book brings together his essays on the philosphy of mind, artificial intelligence, and cognitive ethology that appeared in inaccessible journals from 1984...

Louise Barrett, beyond the brain: how body and environment shape animal and human minds Content Type Journal Article Category Book Review Pages 1-7 DOI 10.1007/s11097-011-9247-6 Authors Mirko Farina, ARC Centre of Excellence in Cognition and its Disorders (CCD), Institute of Human Cognition and Brain Science (IHCBS), Macquarie University, Sydney, Australia Journal Phenomenology and the Cognitive Sciences Online ISSN 1572-8676 Print ISSN 1568-7759.

If one formulates Helmholtz's ideas about perception in terms of modern-day theories one arrives at a model of perceptual inference and learning that can explain a remarkable range of neurobiological facts. Using constructs from statistical physics it can be shown that the problems of inferring what cause our sensory inputs and learning causal regularities in the sensorium can be resolved using exactly the same principles. Furthermore, inference and learning can proceed in a biologically plausible fashion. The ensuing scheme rests on (...) Empirical Bayes and hierarchical models of how sensory information is generated. The use of hierarchical models enables the brain to construct prior expectations in a dynamic and context-sensitive fashion. This scheme provides a principled way to understand many aspects of the brain's organisation and responses. In this paper, we suggest that these perceptual processes are just one emergent property of systems that conform to a free-energy principle. The free-energy considered here represents a bound on the surprise inherent in any exchange with the environment, under expectations encoded by its state or configuration. A system can minimise free-energy by changing its configuration to change the way it samples the environment, or to change its expectations. These changes correspond to action and perception, respectively, and lead to an adaptive exchange with the environment that is characteristic of biological systems. This treatment implies that the system's state and structure encode an implicit and probabilistic model of the environment. We will look at models entailed by the brain and how minimisation of free-energy can explain its dynamics and structure. (shrink)

What kind of movement or behavior is involved in neonate imitation? What exactly is the newborn infant doing when it responds to seeing gestures on another person's face? This question is closely related to some other questions, such as whether neonate imitation is possible, and whether it is truly imitation. Piaget, of course, thought that this sort of "invisible imitation" was not possible for infants less than 8-12 months of age.

This article examines and rejects the claim that 'innateness is canalization'. Waddington's concept of canalization is distinguished from the narrower concept of environmental canalization with which it is often confused. Evidence is presented that the concept of environmental canalization is not an accurate analysis of the existing concept of innateness. The strategy of 'biologicizing the mind' by treating psychological or behavioral traits as if they were environmentally canalized physiological traits is criticized using data from developmental psychobiology. It is concluded that (...) identifying innateness with environmental canalization can only result in adding unhelpful associations from 'folkbiology' to the relatively precise idea of canalization. (shrink)

We critique five points that impede the target article's far-reaching efforts toward formulating a neurobiological theory of language. Neurolinguistics amounts to no more than neurology in linguistics in this account, because it assumes “perceptual representational isomorphism,” processing autonomy and “meaning,” thereby aiming primarily at justifying modular concepts in terms of associative principles.

As bridges or brains become bigger or smaller, the changes pose problems of design thatneed to be solved. Larger brains could have larger or more neurons, or both. With largerneurons, it becomes difficult to maintain conduction times over longer axons andelectrical cable properties over longer dendrites. With more neurons, it becomes difficultfor each neuron to maintain its proportion of connections with other neurons. Theseproblems are addressed by making brains more modular, thereby (...) reducing the lengths ofmany connections, and by altering functions. Smaller brains may not have enoughneurons for all circuits, and they may lose modules and functions. Mammals with moreneocortex tend to have more cortical areas and more columns and types of columnswithin the larger areas. (shrink)

Arbib et al.'s comprehensive review of neural organization, over-relies on modernist concepts and restricts our understanding of brain and behavior. Reliance on terms like coding, transformation, and representation perpetuates a “black-box approach” to the study of the brain. Recognition is due to the authors for attempting to introduce postmodern concepts such as chaos and self-organization to the study of neural organization. However, confusion occurs in the implementation of “biologically rooted” schema theory in which schemas are viewed as computer programs. The (...) inclusion of an additional functional level between structure and dynamics is unnecessary in a postmodernist perspective of brain and behavior. (shrink)

This multidisciplinary collection explores three key concepts underpinning psychiatry -- explanation, phenomenology, and nosology -- and their continuing relevance in an age of neuroimaging and genetic analysis. An introduction by Kenneth S. Kendler lays out the philosophical grounding of psychiatric practice. The first section addresses the concept of explanation, from the difficulties in describing complex behavior to the categorization of psychological and biological causality. In the second section, contributors discuss experience, including the complex and vexing issue of how self-agency and (...) free will affect mental health. The third and final section examines the organizational difficulties in psychiatric nosology and the instability of the existing diagnostic system. Each chapter has both an introduction by the editors and a concluding comment by another of the book's contributors. Contributors: John Campbell, Ph.D.; Thomas Fuchs, M.D., Ph.D.; Shaun Gallagher, Ph.D.; Kenneth S. Kendler, M.D.; Sandra D. Mitchell, Ph.D.; Dominic P. Murphy, Ph.D.; Josef Parnas, M.D., Dr.Med.Sci.; Louis A. Sass, Ph.D.; Kenneth F. Schaffner, M.D., Ph.D.; James F. Woodward, Ph.D.; Peter Zachar, Ph.D. (shrink)

Purpose: This paper demonstrates the conceptual relevance of Maturana’s biology of cognition for the theoretical foundations of the language sciences. Approach: Stuck in rationalizing, rather than naturalizing, language, modern orthodox linguistics is incapable of offering a comprehensible account of language as a species-specific, biologically grounded human feature. This predicament can be overcome by using Maturana’s theory to stress that lived experience gives language an epistemological “lining.” Findings: The key concepts of Maturana’s biology of cognition provide a more coherent theoretical framework (...) for the study of language that can give new life to the language sciences by stressing languaging and the importance of connotation. Conclusion: Maturana’s concept of “languaging” allows the language sciences to depart from the view of language as a system of symbols. Instead, focus should be placed on how the relational dynamics of linguistic interactions trigger changes in the dynamics of the nervous system and the organism as a whole, and how their reciprocal causality is distinguished and described by the languaging observer in terms of mind, intelligence, reason, and self-consciousness. (shrink)

Universal ranks in folk biological taxonomy probably apply to taxonomies of cultural artifacts. We cannot call folk biological cognition domain-specific and modular. Color categorization may manifest unique organization, which would result from known neurology and the nature of color as an attribute. But folk biology does not adduce equivalent evidence. A global process of increasing differentiation similarly affects folk taxonomy, color categorization, and other practices germane to Atran's anthropology of science; this is beclouded by claims of specificity and modularity.

The concept of locally specialized functions dominates research on higher brain function and its disorders. Locally specialized functions must be complemented by processes that coordinate those functions, however, and impairment of coordinating processes may be central to some psychotic conditions. Evidence for processes that coordinate activity is provided by neurobiological and psychological studies of contextual disambiguation and dynamic grouping. Mechanisms by which this important class of cognitive functions could be achieved include those long-range connections within and between cortical regions that (...) activate synaptic channels via NMDA-receptors, and which control gain through their voltage-dependent mode of operation. An impairment of these mechanisms is central to PCP-psychosis, and the cognitive capabilities that they could provide are impaired in some forms of schizophrenia. We conclude that impaired cognitive coordination due to reduced ion flow through NMDA-channels is involved in schizophrenia, and we suggest that it may also be involved in other disorders. This perspective suggests several ways in which further research could enhance our understanding of cognitive coordination, its neural basis, and its relevance to psychopathology. Key Words: attention; cerebral cortex; cognitive coordination; cognitive neuropsychiatry; cognitive neuropsychology; context disorganization; Gamma rhythms; Gestalt theory; glutamate; grouping; memory; NMDA-receptors; PCP-psychosis; perceptual organization; schizophrenia. (shrink)

This is a pioneering cognitive psychological study of Ayahuasca, a plant-based Amazonian psychotropic brew. Benny Shanon presents a comprehensive charting of the various facets of the special state of mind induced by Ayahuasca, and analyzes them from a cognitive psychological perspective. He also presents some philosophical reflections. Empirically, the research presented in this book is based on the systematic recording of the author's extensive experiences with the brew and on the interviewing of a large number of informants: indigenous people, shamans, (...) members of different religious sects using Ayahuasca, and travellers. In addition to its being the most thorough study of the Ayahuasca experience to date, the book lays the theoretical foundations for the psychological study of non-ordinary states of consciousness in general. (shrink)

Philosophical Psychology, Volume 25, Issue 1, Page 143-147, February 2012.

There are problems with Atran's argument for an innate cognitive module for folk biology. He has been too quick to assume innate origins for what might plausibly be learned. Furthermore, in his characterization he includes aspects – essentialist reasoning and inductions from classes – that are not domain-specific. Finally, his characterization compromises his argument that the module is pretheoretical.

Evolutionary explanations of psychological phenomena have become widespread. This paper examines a recent attempt by Nichols and Grantham (2000) to circumvent the problem of epiphenomenalism in establishing the selective status of consciousness. Nichols and Grantham (2000) argue that a case can be made for the view that consciousness is an adaptation based on its complexity. I set out this argument and argue that it fails to establish that phenomenal consciousness is a complex system. It is suggested that the goal of (...) establishing consciousness as an adaptation may be better served by rejecting the distinction between access consciousness and phenomenal consciousness. (shrink)

By spotlighting the irreducible role of cognitive processes between biology and culture, this synthesis and critique of the universalist tradition in colour science offers a genuine starting-point for all future 'serious inquiry into the relationship between linguistic and non-linguistic aspects of colour classification'.

Cognitive ethology is the comparative study of animal cognition from an evolutionary perspective. As a sub-discipline of biology it shares interest in questions concerning the immediate causes and development of behavior. As a part of ethology it is also concerned with questions about the function and evolution of behavior. I examine some recent work in cognitive ethology, and I argue that the notions of mental content and representation are important to enable researchers to answer questions and state generalizations about the (...) function and volution of behavior. (shrink)

According to Darwin, humans, just like other organisms, are not created by any special act. All organisms arise by natural processes from inanimate matter. Humans are no exception. But can it really be the case that even humans are ‘only’ animals – natural beings which (a) are completely made up of natural parts (in the end, of macro-molecules which themselves consist of atoms), and for which it is (b) true that all processes that occur within them are physico-chemical processes? In (...) recent years some German philosophers (e.g. Habermas and Wingert) have argued that man “is elevated above nature by his capacity for deliberation and his ability to judge and comprehend meanings” (Singer and Wingert 2003, 11). Does this mean that humans are ‘supernatural’ in some way or other? My aim is twofold. Firstly, I point out that even non-human animals to a certain extent have the capacity to deliberate and act for reasons. Secondly, I argue that one can also put forward theoretical considerations in favour of the thesis that entirely natural beings may have this capacity. Thus, my answer to the question of what parts of our accustomed views of humanity and the world must we abandon if even we humans are ‘only’ animals is: nothing or at any rate very little. At least, even if we humans are ‘only’ animals, we may have the capacity for deliberation and the ability to judge and comprehend meanings. (shrink)

Living in the Borderland addresses the evolution of Western consciousness and describes the emergence of the 'Borderland,' a spectrum of reality that is beyond the rational yet is palpable to an increasing number of individuals. Building on Jungian theory, Jerome Bernstein argues that a greater openness to transrational reality experienced by Borderland personalities allows new possibilities for understanding and healing confounding clinical and developmental enigmas. In three sections, this book charts the evolution of Western consciousness, examines the psychological and clinical (...) implications and looks at how the new Borderland consciousness bridges the mind-body divide. It challenges the standard clinical model, which views normality as an absence of pathology and equates normality with the rational, and abnormality with the transrational. Jerome Bernstein describes how psychotherapy itself often contributes to the alienation of many Borderland personalities by misdiagnosing the difference between the pathological and the sacred and uses case studies to illustrate the potential such misdiagnoses have for causing serious psychic and emotional damage to the patient. This challenge to the orthodoxies and complacencies of Western medicine's concept of pathology will interest Jungian Analysts, Psychoanalysts, Psychotherapists and Psychiatrists. (shrink)

Psychology can be based on plans, internally held images of achievement that organize the stimulus-response links of traditional psychology. The hierarchical structure of plans must be produced, held, assigned priorities, and monitored. Consciousness is the operation of the plan-executing mechanism, enabling behavior to be driven by plans rather than immediate environmental contingencies. The mechanism unpacks a single internally held idea into a series of actions. New in this paper is the proposal that language uses this mechanism for communication, unpacking an (...) idea into a series of articulatory acts. Language comprehension uses the plan-monitoring mechanism to pack a series of linguistic events into an idea. Recursive processing results from monitoring one's own speech. Neurophysiologically, the planning mechanism is identified with higher-order motor control. (shrink)

Evolving the Mind has two main themes: how ideas about the mind evolved in science; and how the mind itself evolved in nature. The mind came into physical science when it was realised, first, that it is the activity of a physical object, a brain, which makes a mind; and secondly, that our theories of nature are largely mental constructions, artificial extensions of an inner model of the world which we inherited from our distant ancestors. From both of these perspectives, (...) consciousness is the great enigma. If consciousness evolved, however, it is in some sense a material thing whatever else may be said of it. Physics, chemistry, molecular biology, brain function and evolutionary biology - almost the whole of science - is involved, and there can be no expert in all these fields. So the style of the book is simple, almost conversational. The excitement is that we seem to be close to a scientific theory of consciousness. (shrink)

I will actually talk mostly about evolutionary processes in the brain as we think about what to say next; I'll be happy to answer questions later, however, about how this system we call consciousness itself evolved on the usual evolutionary time scale of the ice ages.

How might consciousness have evolved? Unfortunately for the prospects of providing a convincing answer to this question, there is no agreed account of what consciousness is. So any attempt at an answer will have to fragment along a number of different lines of enquiry. More fortunately, perhaps, there is general agreement that a number of distinct notions of consciousness need to be distinguished from one another; and there is also broad agreement as to which of these is particularly problematic - (...) namely phenomenal consciousness, or the kind of conscious mental state which it is like something to have, which has a distinctive subjective feel or phenomenology (henceforward referred to as p-consciousness). I shall survey the prospects for an evolutionary explanation of p-consciousness, on a variety of competing accounts of its nature. My goal is to use evolutionary considerations to adjudicate between some of those accounts. (shrink)

This volume of essays offers an interdisciplinary examination of the evolution of the human mind.

It is suggested that the anatomical structures whichmediate consciousness evolved as decisiveembellishments to a (non-conscious) design strategypresent even in the simplest monocellular organisms.Consciousness is thus not the pinnacle of ahierarchy whose base is the primitive reflex, becausereflexes require a nervous system, which the monocelldoes not possess. By postulating that consciousness isintimately connected to self-paced probing of theenvironment, also prominent in prokaryotic behavior,one can make mammalian neuroanatomy amenable todramatically simple rationalization.

Sir John Eccles, a distinguished scientist and Nobel Prize winner who has devoted his scientific life to the study of the mammalian brain, tells the story of...

Merker's approach allows the formulation of an evolutionary view of consciousness that abandons a dependence on structural homology – in this case, the presence of a cerebral cortex – in favor of functional concordance. In contrast to Merker, though, I maintain that the emergence of complex, dynamic interactions, such as those which occur between thalamus and cortex, was central to the appearance of consciousness. (Published Online May 1 2007).

Includes bibliographical references and indexes.

The Holographic Principle holds that the information in any region of space and time exists on the surface of that region. Layers of the holographic, universal “now” go from the inception of the universe to the present. Universal Consciousness is the timeless source of actuality and mentality. Information is experience, and the expansion of the “now” leads to higher and higher orders of experience in the Universe, with various levels of consciousness emerging from experience. The brain consists of a nested (...) hierarchy of surfaces that range from the most elementary field through the neuron, neural group, and the whole brain. Evidence from the evolution and structure of the brain shows that optimal surface areas in a variety of structures are conserved with respect to underlying surfaces. Microgenesis, the becoming of the mental state through a process of recapitulation of development and evolution, is in full accord with the Holographic Principle. Evidence from a wide variety of contexts indicates the capacity on the mind for total recall of past life events and for access to universal information, indicating connection with the holographic surfaces of prior “nows” and with the Universal holographic boundary. In summation, the Holographic Principle can help us explain the unity and mechanisms of perception, experience, memory, and consciousness. (shrink)

CHAPTER A Phenomenological Introduction to the Cognitive Neuroscience of Consciousness Peter G. Grossenbacher National Institute of Mental Health What is ...

When and where did consciousness emerge in the course of evolution? Did it happen as recently as the past million years, for example concomitant with language or tool making in humans or primates? Or did consciousness arrive somewhat earlier, with the advent of mammalian neocortex 200 million years ago (Eccles, 1992)? At the other extreme, is primitive consciousness a property of even simple unicellular organisms of several billion years ago (e.g. as suggested by Margulis and Sagan, 1995)? Or did consciousness (...) appear at some intermediate point, and if so, where and why? Whenever it first occurred, did consciousness alter the course of evolution? (shrink)

Many special problems crop up when evolutionary theory turns, quite naturally, to the question of the adaptive value and causal role of consciousness in human and nonhuman organisms. One problem is that -- unless we are to be dualists, treating it as an independent nonphysical force -- consciousness could not have had an independent adaptive function of its own, over and above whatever behavioral and physiological functions it "supervenes" on, because evolution is completely blind to the difference between a conscious (...) organism and a functionally equivalent (Turing Indistinguishable) nonconscious "Zombie" organism: In other words, the Blind Watchmaker, a functionalist if ever there was one, is no more a mind reader than we are. Hence Turing-Indistinguishability = Darwin-Indistinguishability. It by no means follows from this, however, that human behavior is therefore to be explained only by the push-pull dynamics of Zombie determinism, as dictated by calculations of "inclusive fitness" and "evolutionarily stable strategies." We are conscious, and, more important, that consciousness is piggy-backing somehow on the vast complex of unobservable internal activity -- call it "cognition" -- that is really responsible for generating all of our behavioral capacities. Hence, except in the palpable presence of the irrational (e.g., our sexual urges) where distal Darwinian factors still have some proximal sway, it is as sensible to seek a Darwinian rather than a cognitive explanation for most of our current behavior as it is to seek a cosmological rather than an engineering explanation of an automobile's behavior. Let evolutionary theory explain what shaped our cognitive capacity (Steklis & Harnad 1976; Harnad 1996, but let cognitive theory explain our resulting behavior. (shrink)

This book is a tour-de-force on how human consciousness may have evolved. From the "phantom pain" experienced by people who have lost their limbs to the uncanny faculty of "blindsight," Humphrey argues that raw sensations are central to all conscious states and that consciousness must have evolved, just like all other mental faculties, over time from our ancestorsodily responses to pain and pleasure. '.

William Paley in his famous statement in 1800 of the Argument from Design, imagined that he found a watch lying on a heath and set to wondering how it came to be there. “The inference is inevitable, that the watch must have had a maker: that there must have existed, at some time, and at some place or other, an artificer or artificers who formed it for the purpose which.