Journal of Mind and Behavior 28 no. 2 , pp. 135-156. The self-prompting theory of consciousness holds that conscious perceptual experience occurs when non-routine perceptual data prompt the activation of a plan in an executive control system that monitors perceptual input. On the other hand, routine, non-conscious perception merely provides data about the world, which indicatively describes the world correctly or incorrectly. Perceptual experience instead involves data that are about the perceiver, not the world. Their function (...) is that of imperatively prompting the perceiver herself to do something (hence. (shrink)

What sort of thing is the mind? And how can such a thing at the same time - belong to the natural world, - represent the world, - give rise to our subjective experience, - and ground human knowledge? Content, Consciousness and Perception is an edited collection, comprising eleven new contributions to the philosophy of mind, written by some of the most promising young philosophers in the UK and Ireland. The book is arranged into three parts. Part (...) I, Concepts and Mental Content, which begins with an attack by Hans-Johann Glock on the representational theory of mind, addresses the nature of mental representation. Part II, Consciousness and the Metaphysics of Mind, concerns the prospects for a naturalistic metaphysics of the conscious mind. Finally, Part III, entitled Perception, pursues the project of giving a satisfactory philosophical account of perceptual experience. The book begins with an introductory essay by the editors, which provides an overview of the state of contemporary philosophy of mind, locating the articles to follow within that context. The individual chapters of Content, Consciousness and Perception are professional contributions to their respective areas, of interest to any philosopher of mind. The volume as a whole is ideal for non-specialists and students interested in getting to grips with the state of the art in contemporary philosophy of mind. -/- Praise for the book: 'If you want to know what the next but one generation of philosophers of mind are thinking about now, *Content, Consciousness and Perception * is a terrific place to look. This wide-ranging international collection is relevant to psychologists and cognitive scientists as well as philosophers.' Tim Williamson Wykeham Professor of Logic at Oxford University. (shrink)

We often consciously will our own actions. This experience is so profound that it tempts us to believe that our actions are caused by consciousness. It could also be a trick, however – the mind’s way of estimating its own apparent authorship by drawing causal inferences about relationships between thoughts and actions. Cognitive, social, and neuropsychological studies of apparent mental causation suggest that experiences of conscious will frequently depart from actual causal processes and so might not reflect direct (...) perceptions of conscious thought causing action. (shrink)

Do perceptual experiences always inherit the content of their neural correlates? Most scientists and philosophers working on perception say ‘yes’. They hold the view that an experience’s content just is (i.e. is identical to) the content of its neural correlate. This paper presses back against this view, while trying to retain as much of its spirit as possible. The paper argues that type-2 blindsight experiences are plausible cases of experiences which lack the content of their neural correlates. (...) They are not experiences of the stimuli or stimulus properties prompting them, but their neural correlates represent these stimulus properties. The argument doesn’t depend on any special view of what it is for an experience to be of a stimulus or stimulus property. The upshot is that, even assuming there is a deep relationship between experiential content and neural content, that relationship is more complex than simple identity. (shrink)

Impressions, energy radiated by phenomena in the momentary environmental scene, enter sensory neurons, creating in afferent nerves a data stream. Following Kant, by our inner sense the mind perceives its own thoughts as it ties together sense data into an internalized scene. The mind, residing in the brain, logically a Language Machine, processes and stores items as coded grammatical entities. Kantian synthetic unity in the linguistic brain is able to deliver our experience of the scene as we appear to (...) see it. Uniquely, the brain records its own history, synthesizing a Movie-in-the-Brain, called the Noumenal Cosmos. Attempting thereby to represent the actual Universe, this makes for a sovereign brain that governs itself. The brain is domicile of an Ego, with its selfhood at stake at all times. Yet, it can know itself only by its actions, in which it appears as an actor in its own movie. Phenomena enter garbled, as confused apparitions, and must be put in good form using top–down feedback control by Ego, so that each movie frame makes rational sense within the overall context of the Noumenal Cosmos. A stack of frames is processed typically in 40 Hz rhythm with 300 ms process time each, for about 12 in the stack at any time. Successive neural centers are processing the stack in the brain assembly line, based on data from increasingly global receptive fields. Ego stitches together the movie frames, but only the top frame is in consciousness for 25 ms. The top frame contains the whole scene where the Ego makes an appearance as the actor that imposes Kantian synthetic unity on the scene, merely an assembly of grammatical texts, in a system-internal coded process language, fitting the scene into the Noumenal Cosmos. But Ego observes Ego only to the extent permitted by the objectivity rule, only what it does and thinks, not its true face. From the Noumenal Cosmos, the Ego receives grammatical messages in the internal sense code. They are integrated into a whole in the reaction of the Ego to the momentary scene. The voluntary nature of Ego’s decisions is explained, based on its ability to code in advance its own actions sequentially in time, as it sees fit with a view to an orderly Noumenal Cosmos, records of code being arranged spatially in neural structures. (shrink)

In the last decade, careful studies of the living brain have opened the way for human consciousness to return to the heights it held before the behavioristic coup of 1913. This is illustrated by seven cases: the discovery of widespread brain activation during conscious perception; high levels of regional brain metabolism in the resting state of consciousness, dropping drastically in unconscious states; the brain correlates of inner speech; visual imagery; fringe consciousness; executive functions of the self; (...) and volition. Other papers in this issue expand on many of these points. . In the past, evidence based on subjective reports was often neglected . It is still true that brain evidence has greater credibility than subjective reports, no matter how reliable. What is new is increasing convergence between subjective experiences and brain observations. For that reason it is no longer rare to see the word 'consciousness' and 'subjectivity' in major science journals. No one so far has discovered a gulf dividing mind and brain. On the contrary, the new evidence supports the central role of consciousness as it was regarded over more than two millenia of written thought. In a sense this was predictable. Nature is full of unexpected convergences -- between fruit fly genes and the human body, between the arc of a tennis ball and the orbit of Mars, and between consciousness and the brain. These convergences show once again the remarkable unity of the observable universe. (shrink)

Ever since its discovery nearly thirty years ago, the phenomenon of blindsight — vision without visual consciousness — has been the source of great controversy in the philosophy of mind, psychology, and the neurosciences. Despite the fact that blindsight is widely acknowledged to be a critical test-case for theories of mind, Blindsight and the Nature of Consciousness is the first extended treatment of the phenomenon from a philosophical perspective. Holt argues, against much received wisdom, for (...) a thorough-going materialism — the view not only that mental states are brain states, but (much more controversially) that mental properties are physical as well. Designed not only for philosophers and scientists, Blindsight and the Nature of Consciousness has something to say to anyone interested in the mystery of the human mind and in how philosophers and scientists are working toward solving that mystery. (shrink)

The aim of this paper is to defend a broad concept of visual perception, according to which it is a sufficient condition for visual perception that subjects receive visual information in a way which enables them to give reliably correct answers about the objects presented to them. According to this view, blindsight, non-epistemic seeing, and conscious visual experience count as proper types of visual perception. This leads to two consequences concerning the role of the phenomenal (...) qualities of visual experiences. First, phenomenal qualities are not necessary in order to see something, because in the case of blindsight, subjects can see objects without experiences phenomenal qualities. Second, they cannot be intentional properties, since they are not essential properties of visual experiences, and because the content of visual experiences cannot be constituted by contingent properties. (shrink)

In a recent response paper to Brogaard (2011a), Morten Overgaard and Thor Grünbaum argue that my case for the claim that blindsight subjects are not visually conscious of the stimuli they correctly identify rests on a mistaken necessary criterion for determining whether a conscious experience is visual or non-visual. Here I elaborate on the earlier argu- ment while conceding that the question of whether blindsight subjects are visually con- scious of the visual stimuli they correctly identify largely (...) is an empirical question. I conclude by sketching a method for testing whether blindsight subjects have visual con- sciousness of stimuli presented to them in their blind field. (shrink)

Where does consciousness come from? For most scientists and laypeople, it is axiomatic that something in the substance of the brain - neurons, synapses and grey matter in just the right combination - create perception, self-awareness, and intentionality. Yet despite decades of neurological research, that ""something"" - the mechanism by which this process is said to occur - has remained frustratingly elusive. This is no accident, as the authors of this book argue, given that the evidence increasingly points (...) to a startling fact: consciousness may not, in fact, reside in the brain at all. In this wide-ranging and deeply scientific book, Imants Baruss and Julia Mossbridge utilise findings from special relativity and quantum mechanics, modern and ancient philosophers, and paranormal psychology to build a rigorous, detailed investigation into the origins and nature of human consciousness. Along the way, they examine the scientific literature on concepts including mediumship, out-of-body and near-death experiences, telekinesis, ""apparent"" versus ""deep time,"" and mind-to-mind communication, and introduce eye-opening ideas about our shared reality. The result is a revelatory tour of the ""post-materialist"" world, and a roadmap for consciousness research in the twenty-first century. (shrink)

Though emotional faces preferentially reach awareness, the present study utilised both objective and subjective indices of awareness to determine whether they enhance subjective awareness and “blindsight”. Under continuous flash suppression, participants localised a disgusted, fearful or neutral face (objective index), and rated their confidence (subjective index). Psychopathic traits were also measured to investigate their influence on emotion perception. As predicted, fear increased localisation accuracy, subjective awareness and “blindsight” of upright faces. Coldhearted traits were inversely related to subjective (...) awareness, but not “blindsight”, of upright fearful faces. In a follow-up experiment using inverted faces, increased localisation accuracy and awareness, but not “blindsight”, were observed for fear. Surprisingly, awareness of inverted fearful faces was positively correlated with coldheartedness. These results suggest that emotion enhances both pre-conscious processing and the qualitative experience of awareness, but that pre-conscious and conscious processing of emotional faces rely on at least partially dissociable cognitive mechanisms. (shrink)

The Conscious Brain brings neuroscientific evidence to bear on enduring philosophical questions. Major philosophical and scientific theories of consciousness are surveyed, challenged, and extended.

The aim of this dissertation is to defend the view that vision is a noninferential way of acquiring knowledge about what takes place in one's immediate vicinity. This direct approach to vision is opposed to the widely-held Cartesian idea that in perception items of consciousness function as epistemic intermediaries. ;In Chapter One I argue that the content of experience is the same as the content of the judgments we would make on the basis of experience, were (...) we to take experience at face value. The representational content of experience, like that of judgment, is fully conceptual. In Chapter Two I examine and criticize the view that experience has, in addition to representational content, irreducibly subjective, nonconceptual, phenomenal content. ;The upshot of these discussions is that experience is an epistemic notion. To have an experience is not just passively to have sensations; it requires the exercise of understanding. The relation between experience and reality is not causal, but normative: to have an experience is to take things to be some way or other, and how things are gives us reasons for taking them to be that way. In Chapter Three I argue that the Causal Theory of Perception misdescribes the place of causation in an account of perception and that it relies on an unsatisfactory conception of experience. In this connection I evaluate the so-called Argument from Illusion. ;In the remainder of the dissertation I take up a different set of issues. First, I defend the reality of appearances by arguing that how something looks--in particular, what color it is--is a fully mind-independent, higher-order property of the thing. Second, I consider the view that contemporary cognitive theories of vision, which explain vision in terms of inference, computation and construction, pose a threat to direct realism. Against this I argue that computational theories provide abstract characterizations of subpersonal processes which causally enable vision. In particular, they describe these blind causal processes as if they involved inference and construction. But the subpersonal processes subserving vision, while causally important, are themselves epistemically irrelevant. (shrink)

What is the conscious mind? What is experience? In 1968, David Armstrong asked “What is a man?” and replied that a man is “a certain sort of material object”. This book starts from his question but proceeds along a different path. The traditional mind-brain identity theory is set aside, and a mind-object identity theory is proposed in its place: to be conscious of an object is simply to be made of that object. Consciousness is physical but not neural. (...) This groundbreaking hypothesis is supported by recent empirical findings in both perception and neuroscience, and is herein tested against a series of objections of both conceptual and empirical nature: the traditional mind-brain identity arguments from illusion, hallucinations, dreams, and mental imagery. The theory is then compared with existing externalist approaches including disjunctivism, realism, embodied cognition, enactivism, and the extended mind. Can experience and objects be one and the same? (shrink)

Perception is sensory awareness. Cognition is reflective awareness. Consciousness is awareness-as-such. In Indian psychology, as represented by Samkhya-Yoga and Advaita Vedanta systems, consciousness and mind are fundamentally different. Reality is the composite of being (sat), knowing (cit) and feeling (ananda). Consciousness is the knowledge side of the universe. It is the ground condition of all awareness. Consciousness is not a part or aspect of the mind. Mind is physical and consciousness is not. Consciousness (...) does not interact with the mind, the brain or any other physical objects or processes. Nor does it have any causative role in mental activity. Hence the existence of consciousness does not interfere or upset the apparently closed physical system. Mind in this view is the interfacing instrumentality that faces consciousness on one side and the brain and the rest of the physical world on the other. Mind is closely connected with the different systems of the brain. In normal perceptions, the mind takes the forms of objects via the channels of the sensory system and the processes in the brain. The forms themselves are non-conscious representations of the world of objects. The mental forms (vrittis) become conscious experiences in the light of the purusha. The vritti in sensory form is perception and with the reflection of the purusha it becomes cognition. All conscious perceptions are therefore cognitions. (shrink)

This thesis mounts an attack against accounts of perceptual justification that attempt to analyze it in terms of evidential justifiers, and has defended the view that perceptual justification should rather be analyzed in terms of non-evidential justification. What matters most to perceptual justification is not a specific sort of evidence, be it experiential evidence or factive evidence, what matters is that the perceptual process from sensory input to belief output is reliable. I argue for this conclusion in the following way. (...) Chapter 1: The Arguments from HallucinationChapter 1 presents a skeptical argument from hallucination that starts from a premise about the alleged introspective indistinguishability of perception and hallucination, and concludes that perceptual knowledge is impossible. Underlying this argument are certain assumptions about the nature of perceptual justification, and different responses to the argument portray different views of perceptual justification. Evidentialism and dogmatism both reject the premise that appearances do not provide evidence sufficient for perceptual knowledge, although they disagree about the precise nature of the appearances. Epistemological disjunctivism rejects the premise that introspectively indistinguishable experiences provide the same evidence, while upholding the idea that some sort of evidence, namely factive evidence, is necessary for perceptual justification and knowledge. Process reliabilism rejects the premise that evidence is necessary for perceptual knowledge on the grounds that even perceptual justification can be obtained without evidence, as long as the cognitive process producing the belief is reliable.Chapter 2: EvidentialismChapter 2 starts by introducing some motivations for experientialist views of perceptual justification, such as evidentialism and dogmatism, which hold that conscious experiences evidentially justify perceptual beliefs. These motivations have to do with their ability to accommodate the New Evil Demon Intuition that demon-deceived subjects have justified perceptual beliefs and the Blindsight Intuition that blindsighters do not have justified perceptual beliefs. However, experientialist views are also faced with a Sellarsian dilemma: either experience is construed as non-propositional, but then the proposed evidential relation is unclear, or experience is construed as propositional, but then it is ad hoc to hold that they can evidentially justify without being justified themselves.Chapter 2 continues with a discussion of evidentialism, which grasps the first horn of this dilemma. I argue that evidentialism cannot adequately explain why a non-propositional experience constitutes evidence for this rather than that belief, and also does not provide any account of how to determine which belief fits an evidence-set which partly consists out of non-propositional experiences. Although a reliabilist version of evidentialism can provide a better account of these matters, it suffers from counter-intuitive predictions about justification and a conception of evidence that is so liberal that it could even include blindsighters and clairvoyants as having such evidence.Chapter 3: DogmatismChapter 3 focuses on variants of dogmatism, a theory of perceptual justification that grasps the second horn of the Sellarsian dilemma by holding that a perceptual experience with the content that p is sufficient for immediate prima facie justification of the belief that p. I first argue that dogmatism should identify perceptual experiences with high-level conscious states to accommodate the problem of novice vs. expert identification and the problem of the speckled hen. I then argue that this version of dogmatism still fails to meet a certain explanatory challenge which I dub the `Distinctiveness Problem'. Dogmatism should explain what is so distinctive about perceptual experience that enables it, in contrast with desire and imagination, to evidentially justify the belief that p without, in contrast with belief, being justified itself.Phenomenalist answers to this problem fail because they either do not provide a distinctive property of perceptual experience, or else provide a property that is reducible to or possibly caused by beliefs. In both cases, dogmatism would have the result that intuitively unjustifying experiences, such as imaginations, nevertheless become capable of justifying beliefs. Moreover, phenomenalists still need some explanation of why phenomenology is epistemically relevant at all.A new variant of the problem of the speckled hen is an intuitive illustration of this point against dogmatists. If a perceptual experience that p is not reliably connected to the fact that p or the belief that p, then beliefs based on this experience simply will not be intuitively justified. One possible response to this problem incorporates reliability into the content of experience in the sense that an experience cannot have the content that p if it is not reliably connected to both the fact that p and the belief that p. However, this will lose the motivation from the New Evil Demon Scenario, and will make large concessions towards reliabilism.Chapter 4: Epistemological DisjunctivismGiven these problems for experientialist views of perceptual justification, chapter 4 focuses on a different evidential account of justification: epistemological disjunctivism. According to the Justified True Belief version of Epistemological Disjunctivism, the fact that I see that p is the factive and reflectively accessible evidence in virtue of which I know that p. I argue that JTBED faces formidable problems: first, it cannot adequately deal with the basis problem, second, it cannot accommodate the New Evil Demon Intuition, third,it faces the problem of hyper-intellectualization, and fourth, it has no good account of reflective access.Knowledge First Epistemological Disjunctivism, in contrast, holds that seeing that p just is a way of knowing that p. The fact that I see that p constitutes my justification for believing that p, even though it is not necessary for my knowledge that p. Although this view solves most of the above problems, I argue that KFED still faces a challenge of its own: its notion of justification is so strong that justification entails knowledge but is not itself entailed by it. This means that it too faces a hyper-intellectualization objection because it cannot accommodate animal justification, and that it too will struggle to accommodate the New Evil Demon Intuition.Nevertheless, there is something to the epistemological disjunctivist idea that higher-order capabilities are important to perceptual justification. Specifically, higher-order capabilities provide one with a way of accommodating the Blindsight Intuition without appealing to the notion of experiential evidence: blindsighters are epistemically worse off than normal human perceivers because they lack higher-order beliefs about how they are gaining their information. If one holds that these higher-order beliefs provide a special sort of justification for perceptual beliefs, then blindsighters lack this type of justification. Chapter 5: Process ReliabilismAfter displaying the problems of several evidential accounts of perceptual justification, chapter 5 introduces a non-evidential account: process reliabilism. The classic version of this view holds that the reliability of a belief-forming process is necessary and sufficient for the prima facie justification of a specific set of beliefs, namely, those that arise out of belief-independent processes. Two classic major problems for this view consist of counterexamples to both the necessity and sufficiency of reliability for justification. Although the Generality Problem raises some difficulties for reliabilism, they do not appear to be insurmountable.The second part of chapter 5 focuses on a variety of process reliabilism, inferentialist reliabilism, that is explicitly aimed at responding to clairvoyance cases. According to inferentialist reliabilism, one should distinguish between basic and non-basic beliefs, where basic beliefs are those that result out of the non-inferential operation of an inferentially opaque cognitive system that developed in a natural way. Reliability is only sufficient for the justification of basic beliefs, while non-basic beliefs also require conditional reliability and justification of the beliefs on which they are based.This distinction between basic and non-basic beliefs is meant to answer the challenge arising out of clairvoyance cases because these are all supposedly cases in which the resulting beliefs arenon-basic. However, I argue that the beliefs in these cases come out as non-basic primarily because of the etiological constraint on cognitive systems, a constraint that is unfortunately undermotivated. It seems that beliefs can be justified even if they are produced by a cognitive system that developed by accident, or by a system that was artificially designed to produce those beliefs. So even though the inferentialist reliabilist might have a point in distinguishing between basic and non-basic beliefs, it is still in need of a different response to clairvoyance cases. Chapter 6: Rejoinders for ReliabilismChapter 6 improves on the inferentialist reliabilist account of justification by presenting a different way of dealing with the clairvoyance cases and New Evil Demon Scenario. I start from the empirically plausible idea that we know that we are perceiving when we are perceiving, not because of the use of experiential evidence, but rather, because of an unconscious source-monitoring mechanism. I then argue that the existence of such a source-monitoring mechanism could be used to explain why clairvoyance cases actually have to do with defeat rather than absence of prima facie justification: beliefs that pop up in our head should be recognized as stemming from untrustworthy sources, and so we acquire defeating higher-order beliefs about the first-order beliefs. I also argue that this defeat should be able to occur even if the higher-order beliefs are themselves unjustified. This defeater-account of clairvoyance is preferable to several externalist alternatives. Making reliability relative to a specific world seems rather ad hoc, and further requirements on justification, such as evidence-based belief, cognitively integrated belief, or properly produced belief, all appear unnecessary and are susceptible to adapted versions of the clairvoyance case.I further argue for an alternative inferentialist reliablist response to the New Evil Demon Intuition which treats it as mistaken rather than correct. The New Evil Demon Intuition might arise because of a mistaken view of actual perceptual justification as having to do with experiential evidence. This mistaken view could be explained by the fact that experience is actually reliably connected to belief and is often cited in response to a knowledge-challenge. If this is a correct analysis of the New Evil Demon Intuition, then there is an element of question-begging involved when this scenario is still pressed against inferentialist reliabilists who do not adhere to the experientialist assumption it presupposes.With the inferentialist reliabilist account in hand,we are able to see that many of the premises of the epistemological argument from hallucination are problematic. Evidence does not appear to be required for perceptual knowledge, as perceptual justification does not even require such evidence. Moreover, if we accept a reliabilist model of introspection, then we are often able to know on the basis of introspection that we are perceiving rather than hallucinating. Once one gets clear about the alternatives, it becomes apparent that the argument thrives on internalist assumptions about justification and knowledge that one need not accept. (shrink)

This is the second of four online Companions to Velmans, M. (ed.) (2018) Consciousness (Critical Concepts in Psychology), a 4-volume collection of Major Works on Consciousness commissioned by Routledge, London. -/- The Companion to Volume 2 Part 1 focuses on the detailed relationship of phenomenal consciousness to mental processing described either functionally (as human information processing) or in terms of neural activity, in the ways typically explored by cognitive psychology and cognitive neuroscience. Beginning with reviews of functional (...) differences between unconscious, preconscious and conscious processing and the different senses in which mental processing can be said to be “conscious”, the readings turn to seminal work on blindsight and related phenomena, experimental evidence of perception without awareness, ways to combine “subjective” and “objective” measures of awareness, evidence for distinct neural pathways governing visual awareness and visual control of motor acts, and the complex ways in which consciousness of action relates to both voluntary and involuntary acts. The readings then focus on the intimate links between attention and consciousness, starting with the writings of William James and surveying the extensive work on this subject over the last 60 years that explores the relationships between and attended and non-attended processing, preconscious and conscious processing, and attention, primary (working, short-term) memory and consciousness. The readings go on to survey the evidence that attention contributes to the “neural binding” required for an integrated conscious experience and evidence that attention (in humans) is dissociable from consciousness, necessary for consciousness, but not sufficient for consciousness. The readings then turn to research on “inattentional blindness”, and conclude with a review of Baars’ global workspace theory, which integrates many theories and findings in this area into a coherent, global model. The Companion then summarises seminal readings on learning, memory and consciousness; the extensive research on mental imagery, long thought to epitomize private, subjective conscious experience—and consequently ruled out of science by reductive, materialist philosophies of mind; the complex relations of consciousness to sleep and dreaming; the development of consciousness in human infants; and the debates surrounding, and extensive evidence for consciousness in non-human animals, with attendant consequences for their humane treatment. -/- As with the other Companions to these Volumes there are many links to background resources (marked in pink) and to the selected readings themselves (marked in blue). (shrink)

Introspection is paradoxical in that it is simultaneously so compelling yet so elusive. This paradox emerges because although experience itself is indisputable, our ability to explicitly characterize experience is often inadequate. Ultimately, the accuracy of introspective reports depends on individuals' imperfect ability to take stock of their experience. Although there is no ideal yardstick for assessing introspection, examination of the degree to which self-reports systematically covary with the environmental, behavioural, and physiological concomitants of experience can help (...) to establish the correspondence between meta-consciousness and experience. We illustrate the viability of such an approach in three domains, imagery, mind-wandering, and hedonic appraisal, identifying both the situations in which introspections appear to be accurate and those in which they seem to diverge from underlying experience. We conclude with a discussion of the various factors that may cause meta-consciousness to misrepresent experience. (shrink)

This is an excerpt of a report that highlights and explores five questions which arose from The Unity of Consciousness and Sensory Integration conference at Brown University in November of 2011. This portion of the report explores the question: How should we study experience, given unity relations?

What is the relationship between perception and action, between an organism and its environment, in explaining consciousness? These are issues at the heart of philosophy of mind and the cognitive sciences. This book explores the relationship between perception and action from a variety of interdisciplinary perspectives, ranging from theoretical discussion of concepts to findings from recent scientific studies. It incorporates contributions from leading philosophers, psychologists, neuroscientists, and an artificial intelligence theorist. The contributions take a range of positions (...) with respect to the view that perception is an achievement by an agent acting in a complex environment in which sensorimotor dynamics constitute an essential ingredient to perceptual experience. A key focus of the book is on the debate about action-oriented theories of visual perception versus the dual-visual systems hypothesis The former champions the role of sensorimotor dynamics in perceptual awareness while the latter favours a functional dichotomy between perception and action. At least on the surface, these two approaches are in conflict. Where one emphasizes the interdependence of action and perception, the other suggests that action and perception are functionally distinct. The dialogue between these two approaches brings out wider theoretical issues underlying the research paradigm of cognitive sciences and philosophy of mind. Exploring one of the major debates in the philosophy and psychology, this book is fascinating reading for all those in the cognitive sciences and philosophy of mind. (shrink)

On the basis of both logical and physical arguments, a majority of philosophers and physicists have opted for the Block View of time in which this ‘passage’ is purely subjective. However, the feeling of the ‘passage’ of time has been left principally unaccounted for in the Block View. It is argued that there are two ways by which the (apparent) ‘passage’ of time is perceived by human beings and it is the combination of these perceptions that gives rise to the (...) deep-seated impression on the conscious mind of a ‘dynamic’ nature of time. In postulating the existence of a specific kind of intrinsic structural difference between the two orientations of time within the Block View, a basis for these two perceptions may be provided. (shrink)

The question I am interested in is this. What exactly is the role of conscious experience in the acquisition of knowledge on the basis of perception? The problem here, as I see it, is to solve simultaneously for the nature of this experience, and its role in acquiring and sustaining the relevant beliefs, in such a way as to vindicate what I regard as an undeniable datum, that perception is a basic source of knowledge about the (...) mind-independent world, in a sense of ‘basic’ which is also to be elucidated. I shall sketch the way in which I think that this should be done. In section I, I argue that perceptual experiences must provide reasons for empirical beliefs. In section II, I explain how they do so. My thesis is that a correct account of the sense in which perceptual experiences are experiences of mind-independent things is itself an account of the way in which they provide peculiarly basic reasons for beliefs about the world around the perceiver. (shrink)

Discussions of withdrawal of life support often revolve around a patient’s perceived level of suffering or lack of experience. Personhood, however, is often linked to personal agency. In the present study, 279 laypeople estimated the amount of agency and experience in hypothetical patients differing in degree of consciousness. Participants also indicated whether they would choose to maintain or terminate life support. Patients were more likely to terminate life support for a patient in a persistent vegetative state, followed (...) by one with amyotrophic lateral sclerosis and in a minimally conscious state. The decision to maintain life support was reliably predicted by perceptions of a patient’s agency but life support decisions were not significantly predicted by ratings of experience. In sum, decisions regarding maintaining life support are more influenced by perceptions of a patient’s ability to plan and act than by perceptions of a patient’s ability to feel or experience. (shrink)

What are phenomenal qualities, the qualities of conscious experiences? Are phenomenal qualities subjective, belonging to inner mental episodes of some kind, or should they be seen as objective, belonging in some way to the physical things in the world around us? Are they physical properties at all? And to what extent do experiences represent the things around us, or the states of our own bodies? Fourteen original papers, written by a team of distinguished philosophers and psychologists, explore the ways in (...) which phenomenal qualities fit in with our understanding of mind and reality. This volume offers an indispensable resource for anyone wishing to understand the nature of conscious experience. (shrink)

This volume is product of the third online consciousness conference, held at http:// consciousnessonline. com in February and March 2011. Chapters range over epistemological issues in the science and philosophy of perception, what neuroscience can do to help us solve philosophical issues in the philosophy of mind, what the true nature of black and white vision, pain, auditory, olfactory, or multi-modal experiences are, to higher-order theories of consciousness, synesthesia, among others. Each chapter includes a target article, commentaries, (...) and in most cases, a final response from the author. Though wide-ranging all of the papers aim to understand consciousness both from the inside, as we experience it, and from the outside as we encounter it in our science. (shrink)

Philosophers and scientists seeking to conceptualize consciousness, and subjective experience in particular, have focused on sensation and perception, and have emphasized binding – how a percept holds together. Building on a constructivist approach to conception centered on separistic-holistic complexes incorporating multiple levels of abstraction, the present approach reconceptualizes binding and opens a new path to theorizing the emergence of consciousness. It is proposed that all subjective experience involves multiple levels of abstraction, a central feature of (...) conception. This modifies the prevalent idea of sequential development from sensation through perception to conception. Further, this approach to mind and consciousness links constructivist theory to artistic activity and suggests that conception, subjective experience, aboutness (intentionality), and agency are linked together through separistic-holistic complexes. It also argues for change in the prevailing constructivist view that regards the process of production of new levels of conception as inherently directed towards better fit with the external environment. Copyright © 2008 S. Karger AG, Basel. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:150 PERCEPTIONS, OBJECTS AND THE NATURE OF MIND In this paper I consider the relation between perceptions and objects for Hume and the bearing which this has on his conception of the mind as composed of perceptions. But first it is necessary to distinguish at least two senses in which he uses the term 'object'. In the first, "perceptions of the human mind" — both impressions and ideas — (...) are referred to as "our objects" (T 1,2). Objects in this sense are intentional objects. Hume almost consistently uses the noun 'perception', rarely the verb 'to perceive'. This serves to emphasize that for him perception is an object, not the perceiving of an object — a departure from the tradition of Locke and Berkeley for whom perceptions are cognitive acts having objects. That perception is not conceived by Hume as a cognitive act or form of awareness but purely as an object of awareness is evident when he says, For since all actions and sensations of the mind are known to us by consciousness, they must necessarily appear in every particular what they are, and be what they appear. Everything that enters the mind, being in reality a perception, 'tis impossible anything shou'd to feeling appear different. This were to suppose, that even when we are most intimately conscious, we might be mistaken (T 190). 1 Or again, "The only existences, of which we are certain, are perceptions, which being immediately present to us by consciousness, command our strongest assent...." (T 212). In its other sense the term 'object' is used to denote bodies, or that to which we attribute a continued existence "distinct from the mind and perception", or, borrowing Locke's expression "external 151 objects". It is just because we attribute a continued and independent existence to bodies that we distinguish them from perceptions, for "all impressions are internal and perishing existences, and appear as such" (T 194). But while we make this distinction in our everyday role of common man, the difference between a perception and an (external) object is really only a difference between two types of perceptions, on the one hand those that are characterized in their occurrence by constancy and coherence, and on the other those, for example the passions, which exhibit a different type of "regularity" in their occurrence (T 195). The constancy and coherence which some perceptions exhibit, together with a natural tendency of the mind "to bestow on the objects a greater regularity than what is observ'd in our mere perceptions" (T 197) causes us to attribute to these perceptions an uninterrupted and independent existence, an existence which is, of course, fictitious, because all perceptions are really internal and perishing. 'Tis certain, that almost all mankind, and even philosophers themselves, for the greatest part of their lives, take their perceptions to be their only objects, and suppose, that the very being, which is intimately present to the mind, is the real body or material existence (T 206). This is not to say, however, that "what any common man means by a hat, or shoe, or stone" (T 202) he also believes to be a perception. What he does believe is that the hat or the shoe is immediately present to the mind, or directly appears to his consciousness. It is Hume, the philosopher, who is here interposing the philosophical doctrine that "no beings are ever present to the mind but perceptions" (T 212). This is, of course, not an empirical generalization. It is the definition of a perception as "whatever can be present 152 to the mind" (Abstract 647). It is this definition which gives sense to the statement "their perceptions are their only objects", the term "objects" here referring to "external objects". And the common man would, no doubt, be surprised to learn that these hats, shoes, etc., which directly appear to his consciousness, are by that circumstance really only his own perceptions which he has imagined, falsely, to have a continued and independent existence. Only a few experiments, however, are needed for the philosopher to realize that perceptions, i.e., what is present to the mind, do not have a continued and independent existence. Unable to give up his vulgar... (shrink)

A conscious being is characterized by its ability to cope with the environment--to perceive it, sometimes change it, and perhaps reflect on it. Surprisingly, most studies of the mind's place in nature show little interest in such interaction. It is often implicitly assumed that the main questions about consciousness just concern the status of various entities, levels, etc., within the individual. The intertwined notions of " experience" and " consciousness" are considered. The predominant use of these notions (...) in cognitive science can be traced back to Cartesianism. What is important is the survival of the central methodological commitments despite seemingly profound changes of metaphysical outlook. The author argues that cognitive scientists typically assimilate perception to sensation, thereby ignoring ways in which descriptions of perception and descriptions of the environment are logically intertwined; that this involves methodological solipsism and an unacknowledged sceptical position that was originally part of Descartes' Dream argument; and that it is impossible to identify the object supposedly to be studied by a science of the phenomenal consciousness. A somewhat parallel argument is identified in Kant's critique of rationalist psychology. (shrink)

Dualists believe that experiences have neither location nor extension, while reductive and ‘non-reductive’ physicalists (biological naturalists) believe that experiences are really in the brain, producing an apparent impasse in current theories of mind. Enactive and reflexive models of perception try to resolve this impasse with a form of “externalism” that challenges the assumption that experiences must either be nowhere or in the brain. However, they are externalist in very different ways. Insofar as they locate experiences anywhere, enactive models locate (...) conscious phenomenology in the dynamic interaction of organisms with the external world, and in some versions, they reduce conscious phenomenology to such interactions, in the hope that this will resolve the hard problem of consciousness. The reflexive model accepts that experiences of the world result from dynamic organism–environment interactions, but argues that such interactions are preconscious. While the resulting phenomenal world is a consequence of such interactions, it cannot be reduced to them. The reflexive model is externalist in its claim that this external phenomenal world, which we normally think of as the “physical world,” is literally outside the brain. Furthermore, there are no added conscious experiences of the external world inside the brain. In the present paper I present the case for the enactive and reflexive alternatives to more classical views and evaluate their consequences. I argue that, in closing the gap between the phenomenal world and what we normally think of as the physical world, the reflexive model resolves one facet of the hard problem of consciousness. Conversely, while enactive models have useful things to say about percept formation and representation, they fail to address the hard problem of consciousness. (shrink)

[This download contains the Table of Contents and Chapter 1]. I argue here that the claim that conscious states are private, in the sense that only one person can ever experience them directly, is false. There actually is a way to connect the brains of two people that would allow one to have direct experience of the other's conscious, e.g., perceptual states. This would allow, for instance, one person to see that the other had deviant color perception (...) (which was masked by correct linguistic practice). This could be achieved by connecting one person's set of executive processes (or cognitive control network) to the conscious perceptual states of the other. Chapter 5 contains an internalist physicalist account of color according to which colors exist only as brain states. Their function is to enable more precise causal interactions between the executive processes and the brain's perceptual systems. This in turn allows for more precise action: I can select the red apples and leave the green ones. (shrink)

Perceptual experiences provide an important source of information about the world. It is clear that having the capacity of undergoing such experiences yields an evolutionary advantage. But why should humans have developed not only the ability of simply seeing, but also of seeing that something is thus and so? In this paper, I explore the significance of distinguishing perception from conception for the development of the kind of minds that creatures such as humans typically have. As will become clear, (...) it is crucial to pay careful attention to the different kinds of information that are involved in perceiving and conceiving (including the way such information is gathered and transmitted). By identifying such kinds of information and the role they play, we can then understand an important feature of why creatures like us have the kind of consciousness and mental processes we do. (shrink)

From one of the world's leading neuroscientists--a succinct, illuminating, wholly engaging investigation of the phenomenon of consciousness. In recent decades, many philosophers and cognitive scientists have declared the question of consciousness unsolvable, but Antonio Damasio is convinced that recent findings in neurobiology, psychology, and AI have given us the necessary tools to solve its mystery. Now, he not only elucidates its myriad aspects, but presents his analysis and insights in a way that is faithful to our own intuitive (...) sense of the experience of consciousness. In the 45 brief chapters of the book, he helps us understand the relation between consciousness and mind; why being conscious is not the same as either being awake or sensing; the essential role of feeling; and the biological brain and development of consciousness. He synthesizes the recent findings of various sciences with the outlook of philosophy, and, most significantly, presents his original research which has transformed our understanding of the brain and human behavior. Here is an indispensable guide to understanding consciousness, the fundamental human capacity for informing--and transforming--our experience of the world around us and our perception of our place in it. (shrink)

"This book is an important study in the philosophy of the mind; drawing on the work of philosopher Wilfrid Sellars and the theory of critical realism to develop a novel argument for understanding perception and metaphysics."--Publisher's website.

In lieu of an abstract, here is a brief excerpt of the content:Mind, Theaters, and the Anatomy of ConsciousnessDonald Beecher"All unified theories of cognition today involve theater metaphors."—Bernard J. BaarsAmong the most perplexing challenges for cognitive philoso-phers are those pertaining to representationalism, Gilbert Ryle's denial of the "ghost in the machine," the languages of cognition, and the "self" as the one-time audience and author of consciousness.1 Each of these topics can be discussed metaphorically in terms of the theater. The (...) mind is a kind of acting space in which thoughts and images are in some fashion prepared and represented in rapid sequence. Consciousness is a theatrical machine behind which there is a director who helps to determine how the narrative of the mind will play itself out. The discrete "I" is not only the prompter of consciousness, but its audience, receiving all that is played in the mind's theater. Or, in the words of C. S. Sherrington, "each waking day is a stage dominated for good or ill, in comedy, farce or tragedy by a dramatis persona, the 'self,' and so it will be until the curtain drops."2 The problem, however, is that in matters so difficult to comprehend as the workings of the human brain and the mind operations attached to it, metaphors develop vectors of their own that shade and nuance understanding in ways that obstruct the plasticity of analysis. For this reason, theater analogies in relation to consciousness have been widely endorsed in characterizing its distinctive operations, yet widely criticized for epitomizing the philosophical thinking in the past (and the present) that detaches consciousness from the emotions, the body, and the material world. For the latter reason, the metaphor of [End Page 1] the theater will generally be found wanting, as it is in Dennett's assault on what he labels "the Cartesian theater." And yet there are compelling reasons why this metaphor may persist for a time to come as the image of choice for illustrating the operations of consciousness.Arguably, the earliest intimations of mind as resembling a theater emerged at the beginning of the sixteenth century. It was not only an age that fostered a renewed interest in dramatized spectacle, but one that confronted, through theater metaphors, the illusory nature of human experience. The rise of the modern theater, and speculations upon reality in relation to happenings in the mind, are quite separate phenomena, but, arguably, a sense of the theater as a place of memory, of illusions projected as realities, and of experience provided the best "thought experiment" for dealing with the paradoxes of mentation. In fact, the emerging sense of reality as an illusion was tantamount to a major paradigm shift, one that has remained at the center of western philosophy from the time of Descartes to the present day. That there could be a disparity between the phenomena of mind and the world of extension was a watershed in epistemological thinking, and it followed, as a matter of course, that the illusions associated with perception would find expression in the illusions associated with theatrical representation. The result was that the medieval metaphor of the speculum, emphasizing the mind as the faithful reflection of reality, was replaced by the theater, in which the necessary conventions permitting belief came to bear on the understanding of the data which the mind represented to itself. In short, conventions are to the theater what adequate representation is to the mind—the necessary slippages whereby perceptions function as reality.Parallel insights into the mind as a theater came about through sixteenth-century inquiries into mnemonics techniques for the improvement of memory. This metaphor of mind came about by analogy with memory theaters of the kind epitomized in the Idea del Theatro (1550) of Giulio Camillo. He chose the theater simply as the most apt edifice in which to house his elaborate set of memory prompts. His goal was to devise an actual working machine for enhancing recall. He chose the theater because of its architectural complexity and multi-sectionality which he could in turn invest with information. Yet insofar as the theater functioned in relation to memory through the art of mnemonics, it became an extension of mind, and... (shrink)

Despite substantial efforts by many researchers, we still have no scientific theory of how brain activity can create or be con- scious experience. This is troubling since we have a large body of correlations between brain activity and consciousness, correlations normally assumed to entail that brain activity creates conscious experience. Here I explore a solution to the mind-body problem that starts with the converse assumption: these correlations arise because consciousness creates brain activity and indeed creates all (...) objects and properties of the physical world To this end, I develop two theses. The multimodal user interface theory of perception states that perceptual experiences do not match or approximate properties of the objective world but instead provide a simplified species-specific, user interface to that world Conscious realism states that the objective world consists of conscious agents and their experiences; these can be mathematically modeled and em- pirically explored in the normal scientific manner. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:150 PERCEPTIONS, OBJECTS AND THE NATURE OF MIND In this paper I consider the relation between perceptions and objects for Hume and the bearing which this has on his conception of the mind as composed of perceptions. But first it is necessary to distinguish at least two senses in which he uses the term 'object'. In the first, "perceptions of the human mind" — both impressions and ideas — (...) are referred to as "our objects" (T 1,2). Objects in this sense are intentional objects. Hume almost consistently uses the noun 'perception', rarely the verb 'to perceive'. This serves to emphasize that for him perception is an object, not the perceiving of an object — a departure from the tradition of Locke and Berkeley for whom perceptions are cognitive acts having objects. That perception is not conceived by Hume as a cognitive act or form of awareness but purely as an object of awareness is evident when he says, For since all actions and sensations of the mind are known to us by consciousness, they must necessarily appear in every particular what they are, and be what they appear. Everything that enters the mind, being in reality a perception, 'tis impossible anything shou'd to feeling appear different. This were to suppose, that even when we are most intimately conscious, we might be mistaken (T 190). 1 Or again, "The only existences, of which we are certain, are perceptions, which being immediately present to us by consciousness, command our strongest assent...." (T 212). In its other sense the term 'object' is used to denote bodies, or that to which we attribute a continued existence "distinct from the mind and perception", or, borrowing Locke's expression "external 151 objects". It is just because we attribute a continued and independent existence to bodies that we distinguish them from perceptions, for "all impressions are internal and perishing existences, and appear as such" (T 194). But while we make this distinction in our everyday role of common man, the difference between a perception and an (external) object is really only a difference between two types of perceptions, on the one hand those that are characterized in their occurrence by constancy and coherence, and on the other those, for example the passions, which exhibit a different type of "regularity" in their occurrence (T 195). The constancy and coherence which some perceptions exhibit, together with a natural tendency of the mind "to bestow on the objects a greater regularity than what is observ'd in our mere perceptions" (T 197) causes us to attribute to these perceptions an uninterrupted and independent existence, an existence which is, of course, fictitious, because all perceptions are really internal and perishing. 'Tis certain, that almost all mankind, and even philosophers themselves, for the greatest part of their lives, take their perceptions to be their only objects, and suppose, that the very being, which is intimately present to the mind, is the real body or material existence (T 206). This is not to say, however, that "what any common man means by a hat, or shoe, or stone" (T 202) he also believes to be a perception. What he does believe is that the hat or the shoe is immediately present to the mind, or directly appears to his consciousness. It is Hume, the philosopher, who is here interposing the philosophical doctrine that "no beings are ever present to the mind but perceptions" (T 212). This is, of course, not an empirical generalization. It is the definition of a perception as "whatever can be present 152 to the mind" (Abstract 647). It is this definition which gives sense to the statement "their perceptions are their only objects", the term "objects" here referring to "external objects". And the common man would, no doubt, be surprised to learn that these hats, shoes, etc., which directly appear to his consciousness, are by that circumstance really only his own perceptions which he has imagined, falsely, to have a continued and independent existence. Only a few experiments, however, are needed for the philosopher to realize that perceptions, i.e., what is present to the mind, do not have a continued and independent existence. Unable to give up his vulgar... (shrink)

Ideally, psychological and phenomenological studies of visual experience should be mutually informative. In that spirit, this article outlines parts of Maurice Merleau-Ponty's phenomenological view of visual experience as a kind of independently active opaque bodily synthesis, and uses those views to (a) help ground and extend Alva Noë's rejection of the “snapshot” theory of visual experience in favor of a more enactive view of visual content, (b) critique a failing of Noë's account, and (c) show how the (...) assumptions underlying more internalist and Cartesian views of visual experience can illegitimately creep in even when they are being carefully criticized. (shrink)

Following lesions to the primary visual cortex, some patients maintain visual capacities within areas of the visual field in which they are defined as clinically blind by static field perimetry. Blindsight describes the ability to discriminate visual stimuli in the absence of awareness of the stimuli in such patients. Some patients exhibit blindsight, but others are aware of the stimuli with which they are presented, a response mode that has been referred to as residual vision. The two response (...) modes are of great interest as they are capable of providing us with information concerning the conscious and unconscious processing of visual signals in humans. However, determining consciousness in these patients is a difficult task and relies on the patient assessing and then reporting on his awareness. In this paper, an experiment is described which is capable of demonstrating conscious visual processing of motion under conditions where the observer is not required to assess his level of awareness. In applying this technique to a human hemianope, GY, it is demonstrated that GY has veridical and conscious perception of visual motion presented to his blind hemifield. Although previously reported, this result can be derived without any reference to GY's commentary on his blind field perception. (shrink)

The paper discusses possible roles of consciousness in a semiotic activity of a cognitive agent. The discussion, we claim, is based on two related approaches to consciousness: on Chalmers’ theory of phenomenal and psychological consciousness and on Damasio’s neural theory, which draws a distinction between core and extended consciousness. Two stages of cognitive-semiotic processing are discussed: the moment of perception of a sign as a meaningful entity and the metasemiotic processes understood as the human capacity (...) to reflect on signs and their usage, analyse and control processes of recognition, interpretation of signs and to detect and correct errors in semiotic activity. In the case of the first stage, it is argued that signs as meaningful entities have a distincly experiential character. The feeling of meaningfulness is a result of phenomenal consciousness, in particular a result of the so-called valuation features of phenomenal experience. I claim that this aspect of cognitive-semiotic activity is possible owing to a special neural mechanism called a semiotic marker. It is argued that semiotic systems have to be able to use signs as signs, i.e. they should display some metacognitive capacities, in particular an ability to analyse semiosis at a metalevel. It is argued that such metasemiosis is dependent on psychological consciousness and is realized at the neural level in the form of extended consciousness. The paper is based on a particular understanding of cognitive semiotics as a discipline involving analyses of cognitive processes as semiotic processes, i.e. processes requiring usage of signs. (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, In 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. 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. 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)

How can the fine-grained phenomenology of conscious experience arise from neural processes in the brain? How does a set of action potentials (nerve impulses) become like the feeling of pain in one's experience? Contemporary neuroscience is teaching us that our mental states correlate with neural processes in the brain. However, although we know that experience arises from a physical basis, we don't have a good explanation of why and how it so arises. The problem of how physical (...) processes give rise to experience is called the 'hard problem' of consciousness and it is the contemporary manifestation of the mind-body problem. This book explains the key concepts that surround the issue as well as the nature of the hard problem and the several approaches to it. It gives a comprehensive treatment of the phenomenon incorporating its main metaphysical and epistemic aspects, as well as recent empirical findings, such as the phenomenon of blindsight, change blindness, visual-form agnosia and optic ataraxia, mirror recognition in other primates, split-brain cases and synaesthesia. (shrink)

Advances in behavioral and brain sciences have engendered wide ranging efforts to help understand consciousness. The target article suggests that abstract computational models are ill-advised. This commentary broadens the discussion to include mysteries of subjective experience that are inconsistent with current neuroscience. It also discusses progress being made through demystifying specific cases and pursuing evolutionary considerations.

"The nature of intuition and its relation to other mental faculties, particularly perception, is one of the most hotly contested debates in philosophy of mind and psychology. Do intuitions justify belief or merely dispositions to believe? Is intuition a mental state with distinctive phenomenal qualities and if so, how do these differ from normal perceptual states? Drawing on the most recent philosophical research on intuition and perception, Ole Koksvik defends the idea that intuition not only justifies belief but (...) can play a much wider role in our everyday epistemic lives than previously thought. Arguing that intuitional experience is similar to perceptual experience he develops a novel view of intuition as conscious experience. His argument involves both a close description of the kind of experience that intuition is and a defence of intuition against criticism from experimental philosophy. The picture that emerges defends intuitions not because they can be found to be true or false but because they permit us to consider the world as it is might otherwise be and are continuous with the rest of general human inquiry"--. (shrink)

The descriptions in the literature of mystical experience and psychedelic experience, such as that induced by LSD, are usually written by persons who have actually experienced only one or perhaps neither of the two states. Because many of the most important effects can be understood by direct experience but only partially described in ordinary language, such lack of direct experience is a major drawback. Since there is disagreement over the question of whether mystical experience and (...) LSD experience can be ‘the same’, it would be helpful if an individual who has experienced aspects of both states would compare them. One of the authors describes his experience with both states. A particular form of mystical experience, cosmic consciousness , occurred spontaneously; no mind altering drugs were used. ALS later took LSD on 12-15 occasions. Both states of consciousness involved alterations in time sense, subject/object boundary, cognition, mood and perception. However, the changes with CC were qualitatively and quantitatively different from those of LSD. The authors conclude that CC and LSD can be quite different states of consciousness, although we cannot completely rule out the possibility that psychedelics might sometimes induce the same kinds of mystical experiences that occur for non-drug reasons. (shrink)

The paper discusses possible roles of consciousness in a semiotic activity of a cognitive agent. The discussion, we claim, is based on two related approaches to consciousness: on Chalmers’ theory of phenomenal and psychological consciousness and on Damasio’s neural theory, which draws a distinction between core and extended consciousness. Two stages of cognitive-semiotic processing are discussed: the moment of perception of a sign as a meaningful entity and the metasemiotic processes understood as the human capacity (...) to reflect on signs and their usage, analyse and control processes of recognition, interpretation of signs and to detect and correct errors in semiotic activity. In the case of the first stage, it is argued that signs as meaningful entities have a distincly experiential character. The feeling of meaningfulness is a result of phenomenal consciousness, in particular a result of the so-called valuation features of phenomenal experience. I claim that this aspect of cognitive-semiotic activity is possible owing to a special neural mechanism called a semiotic marker. It is argued that semiotic systems have to be able to use signs as signs, i.e. they should display some metacognitive capacities, in particular an ability to analyse semiosis at a metalevel. It is argued that such metasemiosis is dependent on psychological consciousness and is realized at the neural level in the form of extended consciousness. The paper is based on a particular understanding of cognitive semiotics as a discipline involving analyses of cognitive processes as semiotic processes, i.e. processes requiring usage of signs. (shrink)