This paper develops an adverbial theory of consciousness. Adverbialism is described and endorsed and defended from its near rival, an identity thesis in which conscious mental states are those that the mental subject self-knows immediately that he or she is "in". The paper develops an account of globally supported self-ascription to embed this neo-Brentanian view of experiencing consciously within a more general account of the relation between consciousness and self-knowledge. Following O'Shaughnessy, person level consciousness is explained as a feature of (...) the bundle of mental capacities characteristic of persons: person level consciousness involves a capacity holism. Drawing on Kant, it is argued that if a person is in a mental state intentionally directed to an object then such a subject can "self token" such knowledge. The content of that self-knoweldge supervenes on the possession of a global set of capacities, and this capacity for self-ascription depends on the fact that our experience has a perspectival character with, as it were, nothing at the vanishing point of this perspective. The fact that one can attach the cogito to any one of one's representation shows a truth about the unity of the conscious life of a person that cannot be stated and this capacity is distinguished from self-conscious thinking about oneself. This approach is contrasted to Shoemaker's functionalist treatment of the self-tokening of conscious states and of "self-blindness". It is argued that to be fully consistent, Shoemaker has to abandon the claim that introspectionism is guilty of a self-scanning model or rational control as he seems committed to that model too. (shrink)

MIT Press, 1999 Review by Paul Bohan Broderick, Ph.D. on May 26th 2002 Volume: 6, Number: 21.

This ambitious work apparently has two main aims. The first is to provide a survey of the currently burgeoning field of "Consciousness Studies", presented via the extended metaphor of a horse race whose winning post is a full scientific explanation of consciousness. The second, which receives much more space, is to present Taylor's own cognitive/neuroscientific theory, dubbed "relational consciousness", and to persuade us that it should be the odds-on favourite to win. Neither aim is very well realized.

An exploration is given of neural network features now being uncovered in cortical processing which begins to go a little way to help bridge the ''Explanatory Gap'' between phenomenal consciousness and correlated brain activity. A survey of properties suggested as being possessed by phenomenal consciousness leads to a set of criteria to be required of the correlated neural activity. Various neural styles of processing are reviewed and those fitting the criteria are selected for further analysis. One particular processing style, in (...) which semiautonomous and long-lasting cortical activity ''bubbles'' are created by input, is selected as being the most appropriate. Further experimental criteria are used to help narrow the possible neural styles involved. This leads to a class of neural models underpinning phenomenal consciousness and to a related set of testable predictions. (shrink)

Philosophers concerned with issues of mind have been turning to the neurosciences, especially neuropsychology, for empirical guidance. While I endorse this emphasis, I find that one important neuropsychological phenomenon, blindsight appears to have been misused by some prominent philosophers. In this paper, I examine this alleged misuse by spelling out the accounts of blindsight given by Daniel Dennett and Ned Block. I attempt to show that both Dennett and Block have ignored many complications surrounding blindsight including subjects' reports of visual (...) sensations. This neglect has serious ramifications for their respective models of human consciousness which I also try to explicate. Further, by misrepresenting blindsight, these accounts serve to hamper scientific and philosophical understanding of the phenomenon and of consciousness. I conclude by sketching a model of blindsight that acknowledges these neglected details. (shrink)

Oscar is going to be the first artificial person — at any rate, he is going to be the first artificial person to be built in Tucson's Philosophy Department. Oscar's creator, John Pollock, maintains that once Oscar is complete he will experience qualia, will be self-conscious, will have desires, fears, intentions, and a full range of mental states (Pollock 1989, pp. ix–x). In this paper I focus on what seems to me to be the most problematical of these claims, viz., (...) that Oscar will experience qualia. I argue that we have not been given sufficient reasons to believe this bold claim. I doubt that Oscar will enjoy qualitative conscious phenomena and I maintain that it will be like nothing to be Oscar. (shrink)

Introduction -- A default position -- Experience -- The character of experience -- Understanding-experience -- A note about dispositional mental states -- Purely experiential content -- An account of four seconds of thought -- Questions -- The mental and the nonmental -- The mental and the publicly observable -- The mental and the behavioral -- Neobehaviorism and reductionism -- Naturalism in the philosophy of mind -- Conclusion: The three questions -- Agnostic materialism, part 1 -- Monism -- The linguistic argument (...) -- Materialism and monism -- A comment on reduction -- The impossibility of an objective phenomenology -- Asymmetry and reduction -- Equal-status monism -- Panpsychism -- The inescapability of metaphysics -- Agnostic materialism, part 2 -- Ignorance -- Sensory spaces -- Experience, explanation, and theoretical integration -- The hard part of the mind-body problem -- Neutral monism and agnostic monism -- A comment on eliminativism, instrumentalism, and so on -- Mentalism, idealism, and immaterialism -- Mentalism -- Strict or pure process idealism -- Active-principle idealism -- Stuff idealism -- Immaterialism -- The positions restated -- The dualist options -- Frege's thesis -- Objections to pure process idealism -- The problem of mental dispositions -- Mental -- Shared abilities -- The sorting ability -- The definition of mental being -- Mental phenomena -- The view that all mental phenomena are experiential phenomena -- Natural intentionality -- E/c intentionality -- The experienceless -- Intentionality and abstract and nonexistent objects -- Experience, purely experiential content, and n/c intentionality -- Concepts in nature -- Intentionality and experience -- Summary with problem -- Pain and pain -- The neo-behaviorist view -- A linguistic argument for the necessary connection between pain and behavior -- A challenge -- The Sirians -- N.N. Novel -- An objection to the Sirians -- The Betelgeuzians -- The point of the Sirians -- Functionalism, naturalism, and realism about pain -- Unpleasantness and qualitative character -- The weather watchers -- The rooting story -- What is it like to be a weather watcher? -- The aptitudes of mental states -- The argument from the conditions for possessing the concept of space -- The argument from the conditions for language ability -- The argument from the nature of desire -- Desire and affect -- The argument from the phenomenology of desire -- Behavior -- A hopeless definition -- Difficulties -- Other-observability -- Neo-behaviorism -- The concept of mind. (shrink)

Emergenztheorien werden stets dann interessant, wenn orthodox monistische und orthodox dualistische Antworten auf metaphysische Fragen nach der Natur bestimmter Phänomene nicht überzeugen können. So ist der nichtreduktive Physikalismus, eine Spielart des synchronen Eigenschaftsemergentismus, eine Reaktion auf die vermeintlichen Schwierigkeiten mit,,Brentanos Problem" und dem Qualia-Problem. Von den reduktionistischen Positionen unterscheidet sich der Eigenschaftsemergentismus durch die Behauptung, einige systematische Eigenschaften seien irreduzibel bezüglich der Eigenschaften und Relationen der Bestandteile des betrachteten Systems. Die Charakterisierung eines Phänomens als emergent erfolgt nach positivistischer Auffassung stets (...) relativ zu einer Mikrostruktur und einer Theorie; daher sei es sinnlos, einen absoluten metaphysischen Begriff der Emergenz verwenden zu wollen. Dagegen spricht das „explanatory gap"-Argument für die Annahme absolut emergenter Eigenschaften. Ein absoluter Emergenzbegriff, der die Einwände der Positivisten ernst genug nimmt, wird vorgeschlagen. (shrink)

Emergenztheorien werden stets dann interessant, wenn orthodox monistische und orthodox dualistische Antworten auf metaphysische Fragen nach der Natur bestimmter Phänomene nicht überzeugen können. So ist der nichtreduktive Physikalismus, eine Spielart des synchronen Eigenschaftsemergentismus, eine Reaktion auf die vermeintlichen Schwierigkeiten mit,,Brentanos Problem" und dem Qualia-Problem. Von den reduktionistischen Positionen unterscheidet sich der Eigenschaftsemergentismus durch die Behauptung, einige systematische Eigenschaften seien irreduzibel bezüglich der Eigenschaften und Relationen der Bestandteile des betrachteten Systems. Die Charakterisierung eines Phänomens als emergent erfolgt nach positivistischer Auffassung stets (...) relativ zu einer Mikrostruktur und einer Theorie; daher sei es sinnlos, einen absoluten metaphysischen Begriff der Emergenz verwenden zu wollen. Dagegen spricht das „explanatory gap"-Argument für die Annahme absolut emergenter Eigenschaften. Ein absoluter Emergenzbegriff, der die Einwände der Positivisten ernst genug nimmt, wird vorgeschlagen. (shrink)

This paper concerns the applications of two-dimensional modal semantics to the explanation of the contents of speech and thought. Different interpretations and applications of the apparatus are contrasted. First, it is argued that David Kaplan's two-dimensional semantics for indexical expressions is different from the use that I made of a formally similar framework to represent the role of contingent information in the determination of what is said. But the two applications are complementary rather than conflicting. Second, my interpretation of the (...) apparatus is contrasted with that of David Chalmers, Frank Jackson, and David Lewis. It is argued that this difference reflects a contrast between internalist and externalist approaches to the problem of intentionality. (shrink)

This paper concerns the applications of two-dimensional modal semantics to the explanation of the contents of speech and thought. Different interpretations and applications of the apparatus are contrasted. First, it is argued that David Kaplan's two-dimensional semantics for indexical expressions is different from the use that I made of a formally similar framework to represent the role of contingent information in the determination of what is said. But the two applications are complementary rather than conflicting. Second, my interpretation of the (...) apparatus is contrasted with that of David Chalmers, Frank Jackson, and David Lewis. It is argued that this difference reflects a contrast between internalist and externalist approaches to the problem of intentionality. (shrink)

D. C. Dennett propounds a ?multiple drafts? conception of consciousness which is both materialist and anti?realist (in something like Dummett's sense). Thus there is no determinate truth as to what the components of someone's consciousness were over any particular period and the order in which they occurred. In opposition to this an anti?materialist form of psychical realism is defended here. There really is a precise something which it is like to be a conscious individual at each moment. The main difficulty (...) in accepting this view is that it seems to make it quite contingent what type of consciousness performs what function in the economy of the organism, e.g. that pleasure acts as a positive, pain as a negative, reinforcer of behaviour. There is a problem here which can only be avoided by abandoning the Humean doctrine that there cannot be necessary relations between distinct existences. (shrink)

Various reflections on the nature of consciousness, partly inspired by Alastair Hannay's views on the subject, are presented. In particular, its reality as a distinct non-physical existence is defended against such alternatives as have dominated philosophy for many years. The main difficulty in such a defense concerns the contingency it seems to imply as to the relations between consciousness and its expression in behaviour. But it only implies such contingency if some version of the Humean principle that there cannot be (...) necessary connections between distinct existences is assumed. It is more promising to see this relation as the falsification of this Humean principle and thus avoid what seems the main recommendation of behaviourism, functionalism etc. Some final reflections on the nature of the physical suggest that something like consciousness may be the noumenal essence of the physical in general. (shrink)

Conscious awareness comprises two distinct states, autonoetic and noetic awareness. Schizophrenia impairs autonoetic, but not noetic, awareness. We investigated the strategic regulation of relevant and irrelevant contents of conscious awareness in schizophrenia using a directed forgetting paradigm. Twenty-one patients with schizophrenia and 21 normal controls were presented with words and told to learn some of them and forget others. In a subsequent test, they were asked to recognize all the words they had seen previously and give remember, know or guess (...) responses according to whether they recognized words on the basis of autonoetic awareness, noetic awareness, or guessing. Overall, patients showed the same degree of a directed forgetting effect as normal subjects. However, whereas the effect was observed both for remember and know responses in normal subjects, it was observed for know, but not for remember, responses in patients. These results indicate that patients with schizophrenia exhibit an impaired strategic regulation of contents of autonetic awareness for relevant and irrelevant information. (shrink)

This review considers a number of recent theories on the neural basis of consciousness, with particular attention to the theories of Bogen, Crick, Llinás, Newman, and Changeux. These theories allot different roles to various key brain areas, in particular the reticular and intralaminar nuclei of the thalamus and the cortex. Crick's hypothesis is that awareness is a function of reverberating corticothalamic loops and that the spotlight ofintramodalattention is controlled by the reticular nucleus of the thalamus. He also proposed different mechanisms (...) for attention and intention . The current review presents a new hypothesis, based on elements from these hypotheses, includingintermodalattention and olfaction and pain, which may pose problems for Crick's original theory. This work reviews the possible role in awareness and intermodal attention and intention of the cholinergic system in the basal forebrain and the tegmentum; the reticular, the intralaminar, and the dorsomedial thalamic nuclei; the raphe and locus coeruleus; the reticular formation; the ventral striatum and extended amygdala; insula cortex, and other selected cortical areas. Both clinical and basic research data are covered. The conclusion is reached that the brain may work by largely nonlinear parallel processing and much intramodal shifts of attention may be effected by intracortical, or multiple corticothalamic mechanisms . But this is constrained by the functional anatomy of the circuits concerned and waking “awareness” is modulated by the many “nonspecific” systems . But the principal agents for intermodal attention shifts, the “searchlight,” may be two key nuclei of the cholinergic system in the mesencephalon. Clinical loss of consciousness results from damage to these nuclei but not from damage to the cholinergic nucleus basalis of the basal forebrain. (shrink)

Researchers have begun to explore animals' capacities for uncertainty monitoring and metacognition. This exploration could extend the study of animal self-awareness and establish the relationship of self-awareness to other-awareness. It could sharpen descriptions of metacognition in the human literature and suggest the earliest roots of metacognition in human development. We summarize research on uncertainty monitoring by humans, monkeys, and a dolphin within perceptual and metamemory tasks. We extend phylogenetically the search for metacognitive capacities by considering studies that have tested less (...) cognitively sophisticated species. By using the same uncertainty-monitoring paradigms across species, it should be possible to map the phylogenetic distribution of metacognition and illuminate the emergence of mind. We provide a unifying formal description of animals' performances and examine the optimality of their decisional strategies. Finally, we interpret animals' and humans' nearly identical performances psychologically. Low-level, stimulus-based accounts cannot explain the phenomena. The results suggest granting animals a higher-level decision-making process that involves criterion setting using controlled cognitive processes. This conclusion raises the difficult question of animal consciousness. The results show that animals have functional features of or parallels to human conscious cognition. Remaining questions are whether animals also have the phenomenal features that are the feeling/knowing states of human conscious cognition, and whether the present paradigms can be extended to demonstrate that they do. Thus, the comparative study of metacognition potentially grounds the systematic study of animal consciousness. Key Words: cognition; comparative cognition; consciousness; memory monitoring; metacognition; metamemory; self-awareness; uncertainty; uncertainty monitoring. (shrink)

This is not a scholarly research paper, but a ‘position paper’ outlining an approach to the study of mind which has been gradually evolving since about 1969 when I first become acquainted with work in Artificial Intelligence through Max Clowes. I shall try to show why it is more fruitful to construe the mind as a control system than as a computational system.

This is not a scholarly research paper, but a ‘position paper’ outlining an approach to the study of mind which has been gradually evolving since about 1969 when I first become acquainted with work in Artificial Intelligence through Max Clowes. I shall try to show why it is more fruitful to construe the mind as a control system than as a computational system.

People often fail to detect large changes to scenes, provided that the changes occur during a visual disruption. This phenomenon, known as ''change blindness,'' occurs both in the laboratory and in real-world situations in which changes occur unexpectedly. The pervasiveness of the inability to detect changes is consistent with the theoretical notion that we internally represent relatively little information from our visual world from one glance at a scene to the next. However, evidence for change blindness does not necessarily imply (...) the absence of such a representation-people could also miss changes if they fail to compare an existing representation of the pre-change scene to the post-change scene. In three experiments, we show that people often do have a representation of some aspects of the pre-change scene even when they fail to report the change. And, in fact, they appear to ''discover'' this memory and can explicitly report details of a changed object in response to probing questions. The results of these real-world change detection studies are discussed in the context of broader claims about change blindness. (shrink)

Since the appearance of a widely influential book, Self-Knowledge and Self-ldentity, Sydney Shoemaker has continued to work on a series of interrelated issues in the philosophy of mind and metaphysics. This volume contains a collection of the most important essays he has published since then. The topics that he deals with here include, among others, the nature of personal and other forms of identity, the relation of time to change, the nature of properties and causality and the relation between the (...) two, dualism and immortality, and the nature of mental states. All the essays show the same care and precision in argument as the earlier book, but they also reveal a substantial shift in Professor Shoemaker's position to a form of materialism. In fact, a number of papers together constitute what is probably the most subtle and rigourous defence yet of a sophisticated functionalism in the account of the mind. (shrink)

Neuropsychological results are increasingly cited in cognitive theories although their methodology has been severely criticised. The book argues for an eclectic approach but particularly stresses the use of single-case studies. A range of potential artifacts exists when inferences are made from such studies to the organisation of normal function – for example, resource differences among tasks, premorbid individual differences, and reorganisation of function. The use of “strong” and “classical” dissociations minimises potential artifacts. The theoretical convergence between findings from fields where (...) cognitive neuropsychology is well developed and those from the normal literature strongly suggests that the potential artifacts are not critical. The fields examined in detail in this respect are short-term memory, reading, writing, the organisation of input and output speech systems, and visual perception. Functional dissociation data suggest that not only are input systems organised modularly, but so are central systems. This conclusion is supported by findings on impairment of knowledge, visual attention, supervisory functions, memory, and consciousness. (shrink)

Human agents draw a variety of inferences effortlessly, spontaneously, and with remarkable efficiency – as though these inferences were a reflexive response of their cognitive apparatus. Furthermore, these inferences are drawn with reference to a large body of background knowledge. This remarkable human ability seems paradoxical given the complexity of reasoning reported by researchers in artificial intelligence. It also poses a challenge for cognitive science and computational neuroscience: How can a system of simple and slow neuronlike elements represent a large (...) body of systemic knowledge and perform a range of inferences with such speed? We describe a computational model that takes a step toward addressing the cognitive science challenge and resolving the artificial intelligence paradox. We show how a connectionist network can encode millions of facts and rules involving n-ary predicates and variables and perform a class of inferences in a few hundred milliseconds. Efficient reasoning requires the rapid representation and propagation of dynamic bindings. Our model (which we refer to as SHRUTI) achieves this by representing (1) dynamic bindings as the synchronous firing of appropriate nodes, (2) rules as interconnection patterns that direct the propagation of rhythmic activity, and (3) long-term facts as temporal pattern-matching subnetworks. The model is consistent with recent neurophysiological evidence that synchronous activity occurs in the brain and may play a representational role in neural information processing. The model also makes specific psychologically significant predictions about the nature of reflexive reasoning. It identifies constraints on the form of rules that may participate in such reasoning and relates the capacity of the working memory underlying reflexive reasoning to biological parameters such as the lowest frequency at which nodes can sustain synchronous oscillations and the coarseness of synchronization. (shrink)

A number of ways of taxonomizing human learning have been proposed. We examine the evidence for one such proposal, namely, that there exist independent explicit and implicit learning systems. This combines two further distinctions, (1) between learning that takes place with versus without concurrent awareness, and (2) between learning that involves the encoding of instances (or fragments) versus the induction of abstract rules or hypotheses. Implicit learning is assumed to involve unconscious rule learning. We examine the evidence for implicit learning (...) derived from subliminal learning, conditioning, artificial grammar learning, instrumental learning, and reaction times in sequence learning. We conclude that unconscious learning has not been satisfactorily established in any of these areas. The assumption that learning in some of these tasks (e.g., artificial grammar learning) is predominantly based on rule abstraction is questionable. When subjects cannot report the rules that govern stimulus selection, this is often because their knowledge consists of instances or fragments of the training stimuli rather than rules. In contrast to the distinction between conscious and unconscious learning, the distinction between instance and rule learning is a sound and meaningful way of taxonomizing human learning. We discuss various computational models of these two forms of learning. (shrink)