Drawing on philosophy, neuroscience, and artificial intelligence, Simple Minds explores the construction of the mind from the matter of the brain.

The central characteristic of cognitive explanations of behavior is the appeal to inner representations. I examine the grounds which justify representational explanations, seeking the minimum conditions which organisms must meet to be candidates for such explanations. I first discuss Fodor's proposal that representationality be attributed to systems which respond to nonnomic properties, arguing that the distinction between the nomic and nonnomic in perception is fatally ambiguous. Then I turn to an illustrative review of the behavior and neurobiology of Hermissenda crassicornis, (...) a marine mollusk. Concerning this "model system," I compare the representational style of explanation with both behaviorist and neurophysiological explanations. Representational explanation is potentially more comprehensive than its rivals, and thus I conclude that representations are useful posits wherever internal information-bearing states mediate behavior. (shrink)

An innovative theory of consciousness, drawing on the phenomenology of Edmund Husserl and supported by brain-imaging, presented in the form of a hardboiled ..

Commonsense psychology and cognitive science both regularly assume the existence of representational states. I propose a naturalistic theory of representation sufficient to meet the pretheoretical constraints of a "folk theory of representation", constraints including the capacities for accuracy and inaccuracy, selectivity of proper objects of representation, perspective, articulation, and "efficacy" or content-determined functionality. The proposed model states that a representing device is a device which changes state when information is received over multiple information channels originating at a single source. The (...) changed state of a representing device is a representation. The unitary information source which would give rise to the information impinging on the representing device, and hence, give rise to the representation, is the content of the representation. The model meets the pretheoretic constraints, and also conforms to available neurobiological data for two invertebrate species. (shrink)

& Functional brain imaging offers new opportunities for the begin with single-subject (preprocessed) scan series, and study of that most pervasive of cognitive conditions, human consider the patterns of all voxels as potential multivariate consciousness. Since consciousness is attendant to so much encodings of phenomenal information. Twenty-seven subjects of human cognitive life, its study requires secondary analysis from the four studies were analyzed with multivariate of multiple experimental datasets. Here, four preprocessed methods, revealing analogues of phenomenal structures, datasets from the (...) National fMRI Data Center are considered: particularly the structures of temporality. In a second Hazeltine et al., Neural activation during response competi- interpretive approach, artificial neural networks were used tion; Ishai et al., The representation of objects in the human to detect a more explicit prediction from phenomenology, occipital and temporal cortex; Mechelli et al., The effects of namely, that present experience contains and is inflected by presentation rate during word and pseudoword reading; and past states of awareness and anticipated events. In all of 21 Postle et al., Activity in human frontal cortex associated with subjects in this analysis, nets were successfully trained to spatial working memory and saccadic behavior. The study of extract aspects of relative past and future brain states, in consciousness also draws from multiple disciplines. In this comparison with statistically similar controls. This exploratory article, the philosophical subdiscipline of phenomenology study thus concludes that the proposed methods for provides initial characterization of phenomenal structures ‘‘neurophenomenology’’ warrant further application, includ- conceptually necessary for an analysis of consciousness. These ing the exploration of individual differences, multivariate structures include phenomenal intentionality, phenomenal differences between cognitive task conditions, and explora- superposition, and experienced temporality.. (shrink)

The continual background awareness of duration is an essential structure of consciousness, conferring temporal extension to the many objects of awareness within the evanescent sensory present. Seeking the possible neural correlates of ubiquitous temporal awareness, this article reexamines fMRI data from off-task “default mode” periods in 25 healthy subjects studied by Grady et al. , 2005). “Brain reading” using support vector machines detected information specifying elapsed time, and further analysis specified distributed networks encoding implicit time. These networks fluctuate; none are (...) continuously active during DM. However, the aggregate regions of greatest variability closely resemble the default mode network. It appears that the default mode network has an important role as a state-dependent monitor of temporality. (shrink)

Accounting for phenomenal structure—the forms, aspects, and features of conscious experience—poses a deep challenge for the scientific study of consciousness, but rather than abandon hope I propose a way forward. Connectionism, I argue, offers a bi-directional analogy, with its oft-noted “neural inspiration” on the one hand, and its largely unnoticed capacity to illuminate our phenomenology on the other. Specifically, distributed representations in a recurrent network enable networks to superpose categorical, contextual, and temporal information on a specific input representation, much as (...) our own experience does. Artificial neural networks also suggest analogues of four salient distinctions between sensory and nonsensoty consciousness. The paper concludes with speculative proposals for discharging the connectionist heuristics to leave a robust, detailed empirical theory of consciousness. (shrink)

The information processing that constitutes accessconsciousness is not sufficient to make a representational state conscious in any sense. Standard examples of computation without consciousness undermine A-consciousness, and Block's cases seem to derive their plausibility from a lurking phenomenal awareness. That is, people and other minded systems seem to have access-consciousness only insofar as the state accessed is a phenomenal one, or the state resulting from access is phenomenal, or both.

To william james, conscious life was a stream; to Edmund Husserl, a flow. These metaphors point to the marvelous continuity of experience as it weaves through the world of thought and things. We might similarly talk about the flow of the body, as I reach for my cup of coffee. A physiologist could decompose the action, isolating the contribution of each muscle and joint to the whole. This functional analysis would constitute one form of explanation of the movement. As we (...) replace "I grab the cup" with the physiologist's account, there is a shift in level of description and a turn toward underlying processes, but the physiologist has added nothing to nature. Explanation of this sort, functional reduction, is simply a .. (shrink)

Good research requires, among other virtues,(i) methods that yield stable experimentalobservations without arbitrary (post hoc)assumptions, (ii) logical interpretations ofthe sources of observations, and (iii) soundinferences to general causal mechanismsexplaining experimental results by placing themin larger explanatory contexts. In TheNew Phrenology , William Uttal examines theresearch tradition of localization, and findsit deficient in all three virtues, whetherbased on lesion studies or on new technologiesfor functional brain imaging. In this paper Iconsider just the arguments concerning brainimaging, especially functional MagneticResonance Imaging. I think (...) that Uttal is tooharsh in his methodological critique, butcorrect in his assessment of the conceptuallimitations of localist evidence. I proposeinstead a data-driven test for assessingrelative modularity in brain images, and showits use in a secondary analysis of fMRI datafrom the National fMRI Data Center(www.fmridc.org). Although the analysis is alimited pilot study, it offers additionalempirical challenge to localism. (shrink)

adiant Cool" has the makings of a gripping noir thriller: a missing body, a tough-talking female sleuth and a mustachioed Russian agent mixed up in a shadowy plot to take over the world. But the novel, by Dan Lloyd, a neurophilosopher at Trinity College in Hartford, is also a serious work of scholarship, the unlikely vehicle for an abstruse new theory of consciousness.

In lieu of an abstract, here is a brief excerpt of the content:Commentary on “Searle and the ‘Deep Unconscious’”Dan Lloyd (bio)Can another person know my thoughts with better authority than I know them myself? With his affirmative answer to this question, Freud invented the twentieth-century human, a being whose mind is accessible to scrutiny from outside, and whose attempts at conscious self-explanation are at best partial and in many cases wrong. Even as Freud’s scientific influence wanes, the shift of (...) authority he inaugurated is still gathering strength. Now the mind is open to many outsiders. Not only psychoanalysts, but behaviorists, cognitive scientists, and neuroscientists are all striving to read my mind, and yours. Against this historical sea change stands the solitary John Searle, whose work is consistently animated by fierce adherence to first person authority and surly attacks of any theory that could be exploited to undermine that authority. To most readers Searle’s positions seem stubbornly anti-scientific and covertly dualistic, despite his insistence to the contrary. And since science is good and dualism is bad, Searle’s arguments have become standing obstacles for theorists to discuss, debate, or dismiss.Buttressing his insistence on first person authority, Searle defends a Cartesian view of mental representation or intentionality, holding that an intentional entity is a conscious entity, either in actuality or potentiality. Deeply unconscious representations are therefore impossible. Eric Gillett has joined the debate just here with a pointed critique of Searle’s argument (also discussed in Lloyd 1990). Gillett performs a double service by challenging Searle’s premises and offering some positive grounds for the deep unconscious. I agree with Gillett that establishing the existence of deeply unconscious representations requires a theory of intentionality that is independent of conscious awareness. Ruth Millikan’s evolutionary teleology is an excellent candidate, in its pursuit of real function and real content (vs. “as-if” interpretation) for mental items.Some questions remain. First, if deeply unconscious entities are clinically important, then in addition to a defense-in-principle of their existence we will need some method of identifying specific deep representations in particular cases. Millikan’s functionalism links content to broad biological and environmental contexts, and thereby seems to be an unwieldy tool for content ascription. If deeply unconscious representations get their content in the way Millikan describes, how can the clinician make use of them?Second, and more important, Millikan’s theory shares with many others the ambition to explain all intentional entities, conscious and unconscious alike. This leads to a new dualism of mental contents, a split between intentional content and conscious content, since the comprehensive theory of intentionality will assign mental content both [End Page 201] shallow and deep, irrespective of consciousness. This is a perplexity that transcends particular theories of intentionality, since what my mental states represent seems at least partly dependent on my environment or context, but my current state of consciousness is exclusively dependent on my brain. How, in theory, can these two concepts of content be reconciled?In sum, deeply unconscious representations do not come cheap. One way to escape the new dualism of content is to deny that the deep entities are representations. Instead, they might be dispositions or the “mechanisms, instinctual drives, structures, and energies which can never become conscious under any conditions,” as Gillett suggests. (In Lloyd 1994 I explore the possibility of a dispositional unconscious understood via connectionism.) On this view, mental content could remain within our first person authority, while the causal processes that manage that content remain out of sight. I wouldn’t have to guess what I’m thinking, but I would depend on the sciences of the mind to tell me how I come to think it.Related ArticlesFeature Article: Searle and the "Deep Unconscious"Commentary: Commentary by LloydDan Lloyd Dan Lloyd, Department of Philosophy, Trinity College, Hartford, CT 06106, U.S.A.ReferencesLloyd, D. 1990. Loose connections: Four problems with Searle’s argument for the ‘Connection Principle.’ Behavioral and Brain Sciences 13: 615–16. Google ScholarLloyd, D. 1994. Connectionist hysteria: Reducing a Freudian case study to a network model. Philosophy, Psychiatry, & Psychology 1, no. 2: 69–88. Google ScholarCopyright © 1996 The Johns Hopkins University Press... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Commentary on “Towards a Design-Based Analysis of Emotional Episodes”Dan Lloyd (bio)To think about grief is to think about many things. My one-year-old daughter was practicing opening and closing a cabinet door as I puzzled over a response to Wright, Sloman, and Beaudoin’s “Toward a Design-Based Analysis of Emotional Episodes.” She was completely absorbed in her project, and as I watched my elf at her task, I thought about (...) the voices of loss that speak briefly in section 3.1. How terrible it would be to lose a loved one. With that, I was overcome with a pang of love for my daughter, and further thought about the paper ceased.In the authors’ terms, my feelings about my daughter were “perturbances,” states that interfered with the internal management of my thought process, derailing it from the deliberate project of responding to the paper. Reading and thinking about loss activated the attachment structures involving those whose loss would be most devastating to me. The activation of the attachment structure was my episode of intense feeling, arising in me with an insistence level that temporarily exceeded my academic pursuits. The whole sequence of mental events arose through the interaction of major processes of perception, beliefs, “motivators,” plans, self-monitoring, and global control. The mind, according to the authors, is a collection of such processes.Is that all there is? The familiar objection to this brand of functionalist analysis is that it leaves out the most important part of mind, namely, conscious experience. Such an “architecture” for an “intelligent agent” is at best a simulation of some aspects of cognition, but the feelings, the moods, the subjective what-it-is-like of experience are missing. And without them, say the familiar critics, the mind is missing. The authors are naturally aware of this objection, and are careful to hedge their project: “In our discussion the ‘phenomenological problem’ is factored out and placed to one side.”I wonder, however, whether the authors are too quick to concede that their model omits the phenomenal. The symptoms of grief expressed by its sufferers would all be considered reports of the experience of grief, aspects of its phenomenology. The authors use these reports to guide their analysis of the functional processes of grief, and their analysis in turn explains why the grievers experience their losses as they do. Functionalist psychologists usually base their analyses on strictly observable responses obtained in cognitive psychology experiments. In using first-person reports as their guide, the authors inaugurate a promising union of phenomenology and functionalism. After their treatment of grief, the left over and left out phenomenology is noticeably slimmer.What remains of grief is its pain. In the spirit [End Page 127] of the paper, I will close with a brief speculative extension of the authors’ approach, using it to examine the core of the experience of grief. Like physical pain, emotional pain is curiously resistant to description, and not even easy to remember. (One remembers that one was in pain, and that it was hateful, but such reminiscences are faint shadows of the experience itself.) Though its phenomenology is elusive, pain has a clear function. It is aversive. As the authors note, pain involves “dispositions to terminate or reduce some state or process.” In their terms, pain is a motivator with a very high insistence level. Motivators motivate plans, and an aversive motivator would principally motivate a plan to remove the cause of the pain. However, grief and other chronic emotional pains are marked by irremediability. There can be no plan that replaces the loss, only fantasy plans or reversions to infant strategies of last resort (like crying). Within the cognitive architecture proposed by this paper, emotional pain is thus characterized by a collision of two processes, a highly insistent motive meeting a vacuum where a plan should be. The unanswered insistence would make the collision hateful, while the absent plan would leave a state partly without intentional content, and thus hard to describe or remember. This breakdown, arguably, is the pain—an emergent state or states arising in just this sort of wrenching bind.The traditional critic will insist that the painfulness... (shrink)

Our heads are full of representations, according to cognitive science. It might seem inevitable that conscious states are a type of brain-based representation, but in this paper I argue that representation and consciousness each form conceptually distinct domains. Representational content depends on context, usually causal, as shown by familiar cases in which context varies while brain states do not -- twin earth cases and brains-in-vats, for example. But these same cases show that conscious content does not depend on context. The (...) vatted brain, for example, enjoys the same experiences as its in vivo counterpart. The structure of experience -- its parts and their distinctive characters -- is the dynamic structure of the brain, viewed "from within." I call this position methodological phenomenalism (MP), and consider its prospects as a foundation for a science of consciousness. I close with a consideration of MP on the subjective "character" of conscious states. Turning away from representation dissolves the perplexity of subjectivity, leaving hopeful prospects for the scientific study of consciousness. (shrink)

Connectionism—also known as parallel distributed processing, or neural network modeling—offers promise as a framework to unite clinical and cognitive psychology, and as a tool for studying conscious and unconscious mental activity. This paper describes a neural network model of the case study of Lucy R., from Freud and Breuer's Studies on Hysteria. Though very simple in architecture, the network spontaneously displays analogues of repression and hallucination, corresponding to Lucy R.'s symptoms. Salient elements of Lucy's conscious experience are represented in the (...) model by the activations of neuronlike processors in a fully interconnected network, without hidden units. The model learns to associate elements of experience that were associated in Lucy's case history. Some of these configurations of elements were traumatic for Lucy; trauma is modeled in the network by "emphatic learning," learning accomplished at an abnormally high learning rate. The model suggests that changing associations among conscious elements are sufficient to generate the symptoms Freud observed: apparent repression, hallucination, and recovery through therapy. In the case of Lucy R., Freud's theoretical inference regarding active but unconscious thought is not required by his data. Instead, the unconscious can be understood as a set of complex dispositions embodied in connections between elements of conscious experience. (shrink)

Many recovering dualists find that the old Cartesian demons are hard to exorcise. Dual substance abuse manifests itself not only as metaphysical dualism, but as a pervasive epistemological framework that creates an unhealthy codependent relationship between scientific realism and phenomenology. Daniel Dennett has led philosophers to recognize many of the symptoms of creeping crypto Cartesianism. In this paper, I try to take Dennett to the limit: Descartes lives on, I argue, in the very heart of cognitive science, in the concept (...) of representation. I outline a five-step program for overcoming this lingering, fundamental, allegiance to Cartesianism, and discuss Dennett's own progress along this path. (shrink)

It wasn't that hard to be a polymath in ancient Greece. All it meant, when you come down to it, was that you could write a poem, speak classical Greek (not very difficult in the circumstances) and understand the mechanics of the Archimedes' screw. Today it's not so easy. Arts and sciences have, for the most part, diverged to an alarming extent, with those on the arts side likely to be as hard-pressed to explain the technologies that increasingly govern our (...) world as a member of a "lost" tribe in the Brazilian rainforest. (shrink)

Not too long ago I came across a notebook from my first year in college. The course was Philosophy 101, and the first author we read was Plato. Reading my own scribbles 25 years later, I was surprised to see that my dutifully recorded lecture notes remained fairly accurate in their portrayal of the Meno. But in the middle of a page on Plato I found the following comment: "Vittgenstein ‹ private language argument." Here was my first encounter with the (...) great Wittgenstein, as I now call him, a philosopher I now know to approximately the same depth as Plato. My professor had probably mentioned Wittgenstein in an aside, and I had done my best with a phonetic spelling. (shrink)

O'Brien & Opie's vehicle hypothesis is an attractive framework for the study of consciousness. To fully embrace the hypothesis, however, two of the authors' claims should be extended: first, since phenomenal content is entirely dependent on occurrent brain events and only contingently correlated with external events, it is no longer necessary to regard states of consciousness as representations. Second, the authors' insistence that only stable states of a neural network are conscious seems ad hoc.

The “Gestalt Bubble” model of Lehar is not supported by the evidence offered. The author invalidly concludes that spatial properties in experience entail an explicit volumetric spatial representation in the brain. The article also exaggerates the extent to which phenomenology reveals a completely three-dimensional scene in perception.

Could "cognitive neuroscience" be an oxymoron? "Cognitive" and "neuroscience" cohere only to the extent that the entities identified as "cognitive" can be coordinated with entities identified as neural. This coordination is typically construed as intertheoretic reduction between "levels" of scientific description. On the cognitive side, folk psychological concepts crystallize into behavioral taxonomies, which are further analyzed into purported cognitive capacities. These capacities are expressed or operationalized in paradigmatic experimental tasks. These cogs comprise a stable ontology, sustaining more than a century (...) of psychology. On the neural side, the biological hierarchy from cells to brains also affords a . (shrink)

As Trinity marches boldly into the Future, I offer a few very strategic new ideas designed to enhance and position Trinity in a preeminently enhanced position. Submitted for your consideration.

“Sensation’s Ghost” identifies one type of non-sensory experience, the quasi-feelings that attend perception, inflecting them vaguely and globally. Following Husserl, I suggest that non-sensory awareness includes much more than the fringe elements Mangan discusses. Every perceptual property can be either sensed, or apprehended in a non-sensory manner. Non-sensory apprehensions are nonetheless part of the occurrent conscious awareness of objects and scenes.

One manifestation of fragility in the pandemic era is the fragility of social systems, and especially the revealed instability of science and other forms of understanding, when opposed to the ….

Gallagher’s main claim can be enhanced neurophenomenologically. In his 1907 lectures Thing and Space, Husserl argued that perception in general is enactive. Moreover, the neuroscientific theory of predictive processing connects neatly to a future-oriented phenomenology.

Not too long ago the trustees of my college decided to update the artistic holdings of our campus, and to this end they set out to acquire a contemporary work of art for permanent display in the College art museum. Not being timid, the trustees wanted a challenging, cutting-edge work, preferably from the West Coast, but they felt they lacked the expertise to find and buy the right piece. As it happened, a few of them had heard of my interest (...) in modernism and its philosophical challenges, and so I found myself with an unusual assignment: I was to fly to Los Angeles with a ten thousand dollar check and bring back something distinguished, a unique object to be discussed and appreciated for years to come. (shrink)