Abstract: Frank Jackson argued, in an astronomically frequently cited paper on 'Epiphenomenal qualia'[Jackson 1982 that materialism must be mistaken. His argument is called the knowledge argument. Over the years since he published that paper, he gradually came to the conviction that the conclusion of the knowledge argument must be mistaken. Yet he long remained totally unconvinced by any of the very numerous published attempts to explain where his knowledge argument had gone astray. Eventually, Jackson did publish a diagnosis of the reasons why, he now thinks, his knowledge argument against materialism fails to prove the falsity of materialism [Jackson 2005. He argues that you can block the knowledge argument against materialism - but only if you tie yourself to a dubious doctrine called representationalism. We argue that the knowledge argument fails as a refutation of either representational or nonrepresentational materialism. It does, however, furnish both materialists and dualists with a successful argument for the existence of distinctively first-person modes of acquaintance with mental states. Jackson's argument does not refute materialism: but it does bring to the surface significant features of thought and experience, which many dualists have sensed, and most materialists have missed

Abstract: Qualia internalism is the thesis that qualia are intrinsic to their subjects: the experiences of intrinsic duplicates (in the same or different metaphysically possible worlds) have the same qualia. Content externalism is the thesis that mental representation is an extrinsic matter, partly depending on what happens outside the head.¹ Intentionalism (or representationalism) comes in strong and weak forms. In its weakest formulation, it is the thesis that representationally identical experiences of subjects (in the same or different metaphysically possible worlds) have the same qualia.²

Abstract: In Section 5 of his interesting article, Goldman suggests that the consideration of imaginary cases can be valuable in the analysis of our psychological concepts. In particular, he argues that we can imagine a system that is isomorphic to us under any functional description, but which lacks qualitative mental states, such as pains and color sensations. Whether or not such a being is empirically possible, it certainly seems to be logically possible, or conceptually coherent. Goldman argues from this possibility to the conclusion that our concepts of qualitative mental states cannot be analyzed entirely in functional terms

Abstract: The systematic phenomenology-denial within the works of Paul and Patricia Churchland is critiqued as to its coherence with the known elelmentary physics and physiology of perception. Paul Churchland misidentifies "qualia" with psychology's sensorimotor schemas, while Patricia Churchland illicitly propounds the intertheoretic identities of logical empiricism while rejecting the premises upon which those identities are based. Their analogies from such arguments to an identity of mind and brain thus have no inductive probability.

Abstract: Epiphenomenalism has been criticized with several objections. It has been argued that epiphenomenalism is incompatible with the alleged causal relevance of mental states, and that it renders knowledge of our own conscious states impossible. In this article, it is demonstrated that qualia-epiphenomenalism follows from some well- founded assumptions, and that it meets the cited objections. Though not free from difficulties, it is at least superior to its main competitors, namely, physicalism and interactionism

Abstract: This paper investigates the status of the purported explanatory gap between pain phenomena and natural science, when the “gap” is thought to exist due to the special properties of experience designated by “qualia” or “the pain quale” in the case of pain experiences. The paper questions the existence of such a property in the case of pain by: (1) looking at the history of the conception of pain; (2) raising questions from empirical research and theory in the psychology of pain; (3) considering evidence from the neurophysiological systems of pain; (4) investigating the possible biological role or roles of pain; and (5) considering methodological questions of the comparable status of the results of the sciences of pain in contrast to certain intuitions underpinning “the explanatory gap” in the case of pain. Skepticism concerning the crucial underlying intuitions seems justified by these considerations

Abstract: Department of Philosophy Brown University Providence, RI 02915

Abstract: DAVID HODGSON Abstract: This article supports the proposition that, if a judgment about the aesthetic merits of an artistic object can take into account and thereby be influenced by the particular quality of the object, through gestalt experiences evoked by the object, then we have free will. It argues that it is probable that such a judgment can indeed take into account and be influenced by the particular quality of the object through gestalt experiences evoked by it, so as to make it probable that we do have free will. The proposition is supported by reference to two basic tricks apparently involved in conscious processes, which I call the qualia trick and the chunking trick; and it is suggested that these tricks make possible and indeed probable the existence of a third trick, which I call the selection trick

Abstract: According to representionalists, qualia-the introspectible properties of sensory experience-are exhausted by the representational contents of experience. Representationalists typically advocate an informational psychosemantics whereby a brain state represents one of its causal antecedents in evolutionarily determined optimal circumstances. I argue that such a psychosemantics may not apply to certain aspects of our experience, namely, our experience of space in vision, hearing, and touch. I offer that these cases can be handled by supplementing informational psychosemantics with a procedural psychosemantics whereby a representation is about its effects instead of its causes. I discuss conceptual and empirical points that favor a procedural representationalism for our experience of space

Abstract: in Naturalizing Phenomenology: Contemporary Phenomenology and Cognitive Science, ed. by Jean Petitot et al. (Stanford, CA: Stanford University Press, 1999), pp. 429-439

Abstract: Notably spurred into the philosophical forefront by Thomas Nagel's 'What Is It Like To Be a Bat?' decades ago, and since maintained by a number of advocates of dualism since that critical publication, is the assertion that our inability to know 'what it's like' to be someone or something else is inexplicable given physicalism. Contrary to this well-known and central objection, I find that a consistent and exhaustive physicalism is readily conceivable. I develop one such theory and demonstrate that not only is it consistent with the private and varied nature of subjective experience, it, in fact, entails it

Abstract: In what computational aspect is the brain different from the computer? In what objective measures can the brain said to be “creative”? These are the fundamental questions that concerns the neural basis of human mental activity. Here we discuss several important aspects of the essential computational ingredients of human mind in order to understand the “creative” process going on in the brain. One of the key concepts is the nature of the source of "externality" that adds new ingredients to the system and its output. We argue that in addition to information input and stochasticity, we need to consider a third possibility, namely "dynamics-embedded externality". We discuss how the neural origin of the subjective sensory qualities (qualia) is related to this aspect of creativity. The invariance of qualia under a certain class of transformation, and the mapping of discrete,

Abstract: _The concept of qualia describes the unique properties that_ _accompany our senses. It is an essential concept when we try to_ _understand the principle that bridges the neural firings in our_ _brain and our perception. The idea of qualia is also of crucial_ _importance when we try to study the functions of the brain from_ _an objective point of view. Qualia must be part of the_ _mathematical formulation of information we use to understand_ _the function of the brain._

Abstract: In this article, I discuss several of the factors that jeopardize our understanding of the nature of qualitative experiences and the mind. I incorporate the view from neuroscience to clarify the na

Abstract: Dennett has maintained that a careful examination of our intuitive notion of qualia reveals that it is a confused notion, that it is advisable to accept that experience does not have the properties designated by it and that it is best to eliminate it. Because most scientists share this notion of qualia, the major line of attack of his project becomes that of raising objections against the ability of science to answer some basic questions about qualia. I try to show that science appeals to qualia and that it in fact adheres to a notion of qualia different from the one that Dennett has attributed to it. It is argued that qualia are amenable to scientific investigation and that this is the reason why science contributes toward the clarification of the notion of qualia. I also try to show that Dennett's skepticism about the abilities of science in answering questions posited by one of his thought experiments is unwarranted. I conclude that we need not accept Dennett's eliminativism about qualia

Abstract: One of the strongest objections to epiphenomenalism is that it precludes any kind of knowledge of qualia, since empirical knowledge has to include a causal relationship between the respective belief and the object of knowledge. It is argued that this objection works only if the causal relationship is understood in a very specific sense (as a 'direct' causal relationship). Epiphenomenalism can, however, live well with other kinds of causal relationships ('indirect' causal relationships) or even with a reliability account of knowledge which does not invoke causation at all. Michael Pauen has argued extensively (this volume of Journal of Consciousness Studies), however, that this line of defence doesn't work because it presupposes the existence of psychophysical laws connecting qualia with physical phenomena which cannot be established under epiphenomenalist presuppositions. It is argued that Pauen's arguments lead to sceptical consequences which threaten not only interactionist alternatives to epiphenomenalism but finally his own account

Abstract: Consciousness and Qualia is a philosophical study of qualitative consciousness, characteristic examples of which are pains, experienced colors, sounds, etc.

Abstract: Experiences vary widely. For example, I run my fingers over sandpaper, smell a skunk, feel a sharp pain in my finger, seem to see bright purple, become extremely angry. In each of these cases, I am the subject of a mental state with a very distinctive subjective character. There is something it is _like_ for me to undergo each state, some phenomenology that it has. Philoso- phers often use the term 'qualia' to refer to the introspectively accessible properties of experiences that characterize what it is like to have them. In this standard, broad sense of the term, it is very difficult to deny that there are qualia. There is another, more restricted use of the term

Abstract: Representationism is the view that the phenomenal character of an experience supervenes on its representational content. Synaesthesia is a condition in which the phenomenal character of the experience produced in a subject by stimulation of one sensory modality contains elements characteristic of a second, unstimulated sensory modality. After reviewing some of the recent psychological literature on synaesthesia and one of the leading versions of representationism, I argue that cases of synaesthesia, as instances of what I call the extra qualia problem, are counterexamples to externalist versions of representationism

Abstract: Introduction Qualia and causation Do qualia exist? Qualia and cognitive science Qualia and other mental phenomena Knowledge of qualia Are qualia irreducible?

Abstract: Qualia include the ways things look, sound and smell, the way it feels to have a pain; more generally, what it's like to have mental states. Qualia are experiential properties of sensations, feelings, perceptions and, in my view, thoughts and desires as well. But, so defined, who could deny that qualia exist? Yet, the existence of qualia is controversial. Here is what is controversial: whether qualia, so defined, can be characterized in intentional, functional or purely cognitive terms. Opponents of qualia think that the content of experience is intentional content (like the content of thought), or that experiences are functionally definable, or that to have a qualitative state is to have a state that is monitored in a certain way or accompanied by a thought to the effect that I have that state. If we include the idea that experiential properties are not intentional or functional or purely cognitive in the definition of `qualia', then it is controversial whether there are qualia

Abstract: forthcoming in a volume of Philosophical Perspectives edited by John Hawthorne. In the

Abstract: Can psychology explain the qualitative content of experience? A persistent philosophical objection to that discipline is that it cannot. Qualitative states or "qualia" are argued to have characteristics which cannot be explained in terms of their relationships to other psychological states, stimuli, and behavior. Since psychology is confined to descriptions of such relationships, it seems that psychology cannot explain qualia

Abstract: The mind-body problem in contemporary philosophy has two parts: the problem of mental causation and the problem of consciousness. These two parts are not unrelated; in fact, it can be helpful to see them as two horns of a dilemma. On the one hand, the causal interaction between mental and physical phenomena seems to require that all causally efficacious mental phenomena are physical; but on the other hand, the phenomenon of consciousness seems to entail that not all mental phenomena are physical.2 One may avoid this dilemma by adopting an epiphenomenalist view of consciousness, of course; but there is little independent reason for believing such a view. Rejecting epiphenomenalism, then, leaves contemporary philosophers with their problem: mental causation inclines them towards physicalism, while consciousness inclines them towards dualism

Abstract: Antireductionist philosophers have argued for higher-order classifications of qualia that locate consciousness outside the scope of conventional scientific explanations, viz., by classifying qualia as intrinsic, basic, or subjective properties, antireductionists distinguish qualia from extrinsic, complex, and objective properties, and thereby distinguish conscious mental states from the possible explananda of functionalist or physicalist explanations. I argue that, in important respects, qualia are intrinsic, basic, and subjective properties of conscious mental states, and that, contrary to antireductionists' suggestions, these higher-order classifications are compatible with qualia reduction. I demonstrate this compatibility by examining the putative higher-order properties of qualia and comparing them to the higher-order properties characteristic of connectionist models of cognitive processes. I contend that the higher-order properties characteristic of connectionist networks approximate (in intertheoretic terms) the putative higher-order properties of qualia sufficiently well to conclude that qualia reductionism can (1) accommodate claims that qualia are intrinsic, basic, and subjective properties, and (2) explain the motivating intuitions for those claims generated by inverted, absent, and alien qualia thought experiments. In this way I argue that (approximate versions of) the putative higher-order classifications of qualia not only fail to defeat qualia reduction but, ironically, turn out to support it

Abstract: The standard view of Cartesian sensations (SV) is that they present themselves as purely qualitative features of experience (or qualia). Accordingly, Descartes view would be that in perceiving the color red, for example, we are merely experiencing the subjective feel of redness rather than seeming to perceive a property of bodies. In this paper, I establish that the argument and textual evidence offered in support of SV fail to prove that Descartes held this view. Indeed, I will argue that there are textual and theoretical reasons for believing that Descartes held the negation of SV. Qualia aren't Descartes legacy

Abstract: Whether or not qualia are ways things seem, the view that qualia have the properties typically attributed to them is unjustified. Ways things seem do not have many of the properties commonly attributed to them. For example, inverted ways things seem are impossible. If ways things seem do not have the features commonly attributed to them, and qualia do have those same features, this looks like good reason to distinguish the two. But if your reasons for believing that qualia have the features are epistemically on a par with reasons for believing that ways things seem have the features, and you know that ways things seem do not have the features, then those reasons cannot justify your belief that qualia have the features. I argue that the reasons are epistemically on a par in this way

Abstract: This paper argues for the reality of qualia as aspects of phenomenal experience. The argument focuses on color vision and develops a dispositionalist, subjectivist account of what it is for an object to be colored. I consider objections to dispositionalism on epistemological, metaphysical, and

Abstract: In this paper I offer an explanation of the ineffability (linguistic inexpressibility) of sensory experiences. My explanation is put in terms of computational functionalism and standard externalist theories of representational content. As I will argue, many or most sensory experiences are representational states without constituent structure. This property determines both the representational function these states can serve and the information that can be extracted from them when they are processed. Sensory experiences can indicate the presence of certain external states of affairs but they cannot convey any more information about them than that. So, format- or code-conversion mechanisms that link different systems of representation (linguistic and perceptual) to each other will fail to extract any relevant information from sensory experiences that could be coded in language. They only way to establish specific roles for sensory experiences in communication and the organization of behavior is to attach to them, by associative links, words, or other behavioral responses. If a sensory experience has no linguistic label associated to it in a particular subject, then no linguistic description can token, or activate, that state in the subject. In other words, no linguistic description can cause a subject to undergo an unlabeled perceptual state. On the contrary, complex, or syntactically structured perceptual states can be built up, on the basis of descriptions, by mechanisms of constructive imagination (conceived here as one sort of format conversion). It is this difference between complex and unstructured representational states that gives us an understanding of the phenomenon we call the ineffability of qualia

Abstract: Recent characterizations of the qualia debate construe the point at issue in terms of the existence of intrinsic properties of experience. I argue that such characterizations mistakenly ignore the epistemic dimension of the notion of qualia. Using Ned Block

Abstract: Despite such widespread acclaim, there are some influential theater critics who have panned Qualia!

Abstract: Zoltan Jakab has presented an interesting conceptual analysis of the ineffability of qualia in a functionalist and classical cognitivist framework. But he does not want to commit himself to a certain metaphysical thesis on the ontology of consciousness or qualia. We believe that his strategy has yielded a number of highly relevant and interesting insights, but still suffers from some minor inconsistencies and a certain lack of phenomenological and empirical plausibility. This may be due to some background assumptions relating to the theory of mental representation employed. Jakab

Abstract: There is an argument (Medlin, 1967; Place, 1988) whichshows conclusively that if qualia are causallyimpotent we could have no possible grounds forbelieving that they exist. But if, as this argumentshows, qualia are causally potent with respect to thedescriptions we give of them, it is tolerably certainthat they are causally potent in other morebiologically significant respects. The empiricalevidence, from studies of the effect of lesions of thestriate cortex (Humphrey, 1974; Weiskrantz, 1986;Cowey and Stoerig, 1995) shows that what is missing inthe absence of visual qualia is the ability tocategorize sensory inputs in the visual modality. This would suggest that the function of privateexperience is to supply what Broadbent (1971) callsthe evidence on which the categorization ofproblematic sensory inputs are based. At the sametime analysis of the causal relation shows that whatdifferentiates a causal relation from an accidentalspatio-temporal conjunction is the existence ofreciprocally related dispositional properties of theentities involved which combine to make it true thatif one member of the conjunction, the cause, had notexisted, the other, the effect, would not haveexisted. The possibility that qualia might bedispositional properties of experiences which, as itwere, supply the invisible glue that sticks cause toeffect in this case is examined, but finallyrejected

Abstract: In this paper I explore the logical relationship between the question of the reality of qualia and the problem of universals. I argue that nominalism is inconsistent with the existence of qualia, and that realism either implies or makes plausible the existence of qualia. Thus, one's position on the existence of qualia is strongly constrained by one's answer to the problem of universals

Abstract: ABSTRACT. In this paper I propose a defense of a posteriori materialism. Prob- lems with a posteriori identity materialism are identi?ed, and a materialism based on composition, not identity, is proposed. The main task for such a proposal is to account for the relation between physical and phenomenal properties. Compos- ition does not seem to be ?t as a relation between properties, but I offer a peculiar way to understand property-composition, based on some recent ideas in the literature on ontology. Finally, I propose a materialist model for the mind-body relation that is able to resist the attack from conceivability arguments

Abstract: Are qualia natural kinds? In order to give this question slightly more focus, and to show why it might be an interesting question, let me begin by saying a little about what I take qualia to be, and what natural kinds. For the purposes of this paper, I shall be assuming a fairly full-blooded kind of phenomenal realism about qualia: qualia, thus, include the qualitative painfulness of pain (rather than merely the functional specification of pain states), the qualitative redness in the visual field that typically accompanies red discriminations, the taste of lemon (independently of the fact that such states are normally caused by lemons and give rise to puckering of the lips, etc.), and so on. In other words, I am assuming the falsity of functionalism with respect to qualia, though I am not for a moment assuming dualism

Abstract: If a brain is duplicated so that there are two brains in identical states, are there then two numerically distinct phenomenal experiences or only one? There are two, I argue, and given computationalism, this has implications for what it is to implement a computation. I then consider what happens when a computation is implemented in a system that either uses unreliable components or possesses varying degrees of parallelism. I show that in some of these cases there can be, in a deep and intriguing sense, a fractional (non-integer) number of qualitatively identical phenomenal experiences. This, in turn, has implications for what lessons one should draw from neural replacement scenarios such as Chalmers

Abstract: Assume that a quale as we experience it is a perspective on an underlying physical state, rather than the physical state as such ' the reality as known as distinct from the reality as such. Assume, further, that this inner perspective is integral to, and materially co-extensive with, the physical state itself. Assume, finally, that the physical state in question is known as a brain state of a particular kind by an external observer of the brain in which it occurs. The result is a perspective in which a quale is entirely physical; a position that resolves several known difficulties for physicalism, including those associated with the explanatory gap, Jackson's knowledge argument, and Chalmers' hard problem of consciousness

Abstract: The subjective features of conscious mental processes--as opposed to their physical causes and effects--cannot be captured by the purified form of thought suitable for dealing with the physical world that underlies appearances." (Nagel, in Dennett, 1991, p. 372)

Abstract: A family of compelling intuitions work to keep "the problem of consciousness" systematically insoluble, and David Rosenthal, in a series of papers including the one under discussion, has been resolutely driving these intuitions apart, exposing them individually to the light, and proposing alternatives. In this instance the intuition that has seemed sacrosanct, but falls to his analysis, is the intuition that "sensory quality" and consciousness are necessarily united: that, for instance, there could not be unconscious pains, or unconscious subjective shades of blue, or unconscious aromas of freshly roasted coffee beans. The particular airborne polymers that are the vehicles of freshly roasted coffee beans could exist, of course, in the absence of any observer, and hence of any consciousness, but the sensory quality of that aroma requires--according to well-entrenched intuition--not only an observer but a conscious observer. Such properties have no esse except as percipi

Abstract: "Qualia" is an unfamiliar term for something that could not be more familiar to each of us: the ways things seem to us. As is so often the case with philosophical jargon, it is easier to give examples than to give a definition of the term. Look at a glass of milk at sunset; the way it looks to you--the particular, personal, subjective visual quality of the glass of milk is the quale of your visual experience at the moment. The way the milk tastes to you then is another, gustatory quale, and how it sounds to you as you swallow is an auditory quale; These various "properties of conscious experience" are prime examples of qualia. Nothing, it seems, could you know more intimately than your own qualia; let the entire universe be some vast illusion, some mere figment of Descartes' evil demon, and yet what the figment is made of (for you) will be the qualia of your hallucinatory experiences. Descartes claimed to doubt everything that could be doubted, but he never doubted that his conscious experiences had qualia, the properties by which he knew or apprehended them

Abstract: Once upon a time, there were two large black boxes, A and B, connected by a long insulated copper wire. On box A there were two buttons, marked *a* and *b*, and on box B there were three lights, red, green, and amber. Scientists studying the behavior of the boxes had observed that whenever you pushed the *a* button on box A, the red light flashed briefly on box B, and whenever you pushed the *b* button on box A, the green light flashed briefly. The amber light never seemed to flash. They performed a few billion trials, under a very wide variety of conditions, and found no exceptions. There seemed to them to be a causal regularity, which they conveniently summarized thus

Abstract: Can the physicalist consistently hold that representational content is all there is to sensory experience and yet that two perceivers could have inverted phenomenal spectra? Yes, if he holds that the phenomenal properties the inverts experience are dummy properties, not instantiated in the physical objects being perceived nor in the perceivers

Abstract: Max Bennett is a distinguished Australian neuroscientist, Peter Hacker an Oxford philosopher and leading authority on Wittgenstein. A book resulting from their collaboration, Philosophical Foundations of Neuroscience, has received high praise. According to the Blackwell website, G.H. von Wright asserts that it 'will certainly, for a long time to come, be the most important contribution to the mind-body problem that there is'; and Sir Anthony Kenny says it 'shows that the claims made on behalf of cognitive science are ill-founded'. M.R. Bennett & P.M.S. Hacker, Philosophical Foundations of Neuroscience (Oxford: Blackwell, 2003)

Abstract: In view of the excellent arguments that have been put forth recently in favour of qualia, internal sensory presentations, it would strike an impartial observer - one could imagine a future historian of philosophy - as extremely odd why so many philosophers who are opposed to qualia, that is, sensory experiences internal to the brain, have largely ignored those arguments in their own. There has been a fashionable assumption that any theory of perception which espouses qualia has long since been overcome by a number of 'formidable' objections, in particular, the Homunculus/Infinite Regress Objection, the Solipsism Objection, Austin's Illusion/Delusion Objection, the Ludicrousness-of-Colours-in-the-Brain Objection, the Indirect-Realist-has-to-assume-Direct-Realism Objection, the Impossibility-of-Comparing-Internal-with-External Objection, the Impossibility of Intrinsic Experience, and several more minor varieties of these. It is uncanny how they continue to be repeated, indeed, with a kind of automatism, evidenced by the fact that none of those who repeat them appear to have taken note of the answers to the objections. Indeed, they only appear to refer to those philosophers with whom they agree: it has long been insisted upon in the study of rhetoric that one of the weakest things to do in an argument is to ignore the main points made by one's opponent:

[it is] the wisest plan _to state Objections in their full force_ ; at least, wherever there does exist a satisfactory
answer to them; otherwise, those who hear them stated more strongly than by the uncandid advocate who
had undertaken to repel them, will naturally enough conclude that they are unanswerable. It is but a
momentary and ineffective triumph that can be obtained by man

Abstract: As Gert says, the basic claim of representationism is that the phenomenal character of an experience supervenes on its representational content. Restricted to color experience, representationism may be put as follows

Abstract: Philosophers have devoted a great deal of discussion to the question of whether an inverted spectrum thought experiment refutes functionalism. (For a review of the inverted spectrum and its many philosophical applications, see Byrne, 2004.) If Ho?man is correct the matter can be swiftly and conclusively settled, without appeal to any empirical data about color vision (or anything else). Assuming only that color experiences and functional relations can be mathematically represented, a simple mathematical result

Abstract: Qualia inversion thought experiments are ubiquitous in contemporary philosophy of mind (largely due to the influence of Shoemaker 1982 and Block 1990). The most popular kind is one or another variant of Locke's hypothetical case of

Abstract: Palmer's subjectivity barrier seems to be erected on a popular but highly suspect conception of visual experience, and his color room argument is invalid

Abstract: Subjectivists hold that you cannot specify color kinds without implicitly or explicitly referring to the dispositions of observers. Even though "yellow" is ascribed to physical items, and presumably there is something physical in each such item causing it to be so characterized, the only physical similarity between all such items is that they all affect an observer in the same way. So the principles organizing the colors are all found within the skin

Abstract: Spectrum inversion is a thought experiment, and I would wager that there is no better diagnostic test to the disciplinary affiliation of a randomly selected member of the audience than your reaction to a thought experiment. It is a litmus test. If you find that you are paying close attention, subvocalizing objections, and that your heart-rate and metabolism go up, you have turned pink: you are a philosopher. If on the other hand the thought experiment leaves you cold, and you wonder why otherwise sensible people would worry about such things, you have turned blue and you are a psychologist

Abstract: The possibility that what looks red to me may look green to you has traditionally been known as "spectrum inversion." This possibility is thought to create difficulties for any attempt to define mental states in terms of behavioral dispositions or functional roles. If spectrum inversion is possible, then it seems that two perceptual states may have identical functional antecedents and effects yet differ in their qualitative content. In that case the qualitative character of the states could not be functionally defined

Abstract: Formerly a spectral apparition that haunted behaviorism and provided a puzzle about our knowledge of other minds, the inverted spectrum possibility has emerged as an important challenge to functionalist accounts of qualia. The inverted spectrum hypothesis raises the possibility that two individuals might think and behave in the same way yet have different qualia. The traditional supposition is of an individual who has a subjective color spectrum that is inverted with regard to that had by other individuals. When he looks at red objects, this individual has the qualia normally produced in others by blue objects. And when presented with a blue object, this individual experiences qualia that most persons experience only when presented with red objects. And so forth - the Invert's color spectrum is the inverse of normal; there are systematic inter-subjective differences in qualia

Abstract: Philosophers have adopted various names for the things in the beholder (or properties of the beholder) that have been supposed to provide a safe home for the colors and the rest of the properties that have been banished from the "external" world by the triumphs of physics: "raw feels", "sensa", "phenomenal qualities" "intrinsic properties of conscious experiences" "the qualitative content of mental states" and, of course, "qualia," the term I will use. There are subtle differences in how these terms have been defined, but I'm going to ride roughshod over them. I deny that there are

Abstract: As a lefthanded person, I can wonder whether I am a left-hemisphere-dominant speaker or a right-hemisphere-dominant speaker or something mixed, and the only way I can learn the truth is by submitting myself to objective, Athird-person@ testing. I don =t Ahave access to @ this intimate fact about how my own mind does its work. It escapes all my attempts at introspective detection, and might, for all I know, shunt back and forth every few seconds without my being any the wiser. In striking contrast to this is the traditional idea that there are

Abstract: If you trained someone to emit a particular sound at the sight of something red, another at the sight of something yellow, and so on for other colors, still he would not yet be describing objects by their colors. Though he might be a help to us in giving a description. A description is a representation of a distribution in a space (in that of time, for instance)

Abstract: There has been much written in recent years about whether a pair of subjects could have visual experiences that represented the colors of objects in their environment in precisely the same way, despite differing significantly in what it was like to undergo them, differing that is, in their qualitative character. The possibility of spectrum inversion has been so much debated1 in large part because of the threat that it would pose to the more general doctrine of Intentionalism, according to which the representational content of an experience fixes what it

Abstract: Palmer's target article is surely one of the most scientifically detailed and knowledgeable treatments of spectrum inversion ever. Unfortunately, it is built on a very shaky philosophical foundation, the notion of the "intrinsic". In the article's ontology, there are two kinds of properties of mental states, intrinsic properties and relational properties. The whole point of the article is that these aspects of experience are mutually exclusive: the intrinsic is nonrelational and the relational is nonintrinsic

Abstract:   Susan Hurley has attacked the ''Duplication Assumption'', the assumption thatcreatures with exactly the same internal states could function exactly alike inenvironments that are systematically distorted. She argues that the dynamicalinterdependence of action and perception is highly problematic for the DuplicationAssumption when it involves spatial states and capacities, whereas no such problemsarise when it involves color states and capacities. I will try to establish that theDuplication Assumption makes even less sense for lightness than for some ofthe spatial cases. This is due not only to motor factors, but to the basic physicalasymmetry between black and white. I then argue that the case can be extendedfrom lightness perception to hue perception. Overall, the aims of this paper are:(1) to extend Susan Hurley''s critique of the Duplication Assumption; (2) to argueagainst highly constrained versions of Inverted Spectrum arguments; (3) to proposea broader conception of the vehicle for color perception

Abstract: In restricting his analysis to the causal relations of functionalism, on the one hand, and the neurophysiological realizers of biology, on the other, Palmer has overlooked an alternative conception of the relationship between color experience and the brain - one that liberalises the relation between mental phenomena and their physical implementation, without generating functionalism

Abstract: The relations among consciousness, brain, behavior, and scientific explanation are explored in the domain of color perception. Current scientific knowledge about color similarity, color composition, dimensional structure, unique colors, and color categories is used to assess Locke

Abstract: The principle of functional invariance states that it is a natural law that conscious beings with the same functional organization have the same quality of conscious experience. A group of arguments in support of this principle are rejected, on the grounds that they establish at most only the weaker intra-subjective principle that any two stages in the life of a single conscious being that duplicate one another in terms of functional organization also duplicate one another in terms of quality of phenomenal experience

Abstract: Most philosophers who have endorsed the idea that there is such a thing as phenomenal content—content that supervenes on phenomenal character—have also endorsed what I call Standard Russellianism. According to Standard Russellianism, phenomenal content is Russellian in nature, and the properties represented by perceptual experiences are mind-independent physical properties. In agreement with Sydney Shoemaker [Shoemaker, S. (1994). Philosophy and Phenomenological Research, 54 249–314], I argue that Standard Russellianism is incompatible with the possibility of spectrum inversion without illusion. One defense of (...) Standard Russellianism is to hold that spectrum inversion without illusion is conceivable but not in fact possible. I argue that this response fails. As a consequence, either phenomenal content is not Russellian, or experiences do not represent mind-independent physical properties

Abstract: Sydney Shoemaker offers an account of color perception that attempts to do justice, within a functionalist framework, to the commonsense view that colors are properties of ordinary objects, to the existence of qualia, and to the possibility of spectrum inversions. Shoemaker posits phenomenal properties as dispositional properties of colored objects that explain how there can be intersubjective variation in the experience of a particular color. I argue that his account does not in fact allow for the description of a spectrum inversion scenario, and that it cannot sustain a functionalist relationship between an object's color and its phenomenal properties. Functionalists must, however, come to terms with Shoemaker's recognition that intersubjective spectrum shifts are possible

Abstract: Palmer=s main intuition pump, the Acolor machine, @ greatly underestimates the complexity of a system isomorphic in color experience to humans. The neuroscientific picture of this complexity makes clear that the brain actively produces our experiences by processes that science can investigate, thereby supporting functionalism and leaving no (color) room for a passive observer to witness subisomorphic experiential differences

Abstract: Chalmers (The Conscious Mind, Oxford Unversity Press, Oxford 1996) has argued for a form of property dualism on the basis of the concept of a zombie (which is physically identical to normals), and the concept of the inverted spectrum. He asserts that these concepts show that the facts about consciousness, such as experience or qualia, are really further facts about our world, over and above the physical facts. He claims that they are the hard part of the mind-body issue. He also claims that consciousness is a fundamental feature of the world like mass, charge, etc. He says that consciousness does not logically supervene on the physical and all current attempts to assert an identity between consciousness and the physical are just as non-reductive as his dualism. They are simply correlations and are part of the problem of the explanatory gap. In this paper, three examples of strong identities between a sensation or a quale and a physiological process are presented, which overcome these problems. They explain the identity in an a priori manner and they show that consciousness or sensations (Q) logically supervene on the physical (P), in that it is logically impossible to have P and not to have Q. In each case, the sensation was predicted and entailed by the physical. The inverted spectrum problem for consciousness is overcome and explained by a striking asymmetry in colour space. It is concluded that as some physical properties realize some sensations or qualia that human zombies are not metaphysically possible and the explanatory gap is bridged in these cases. Thus, the hard problem is overcome in these instances

Abstract: As far as an adequate understanding of phenomenal consciousness is concerned, representationalist theories of mind which are modelled on the information processing paradigm, are, as much as corresponding neurobiological or functionalist theories, confronted with a series of arguments based on inverted or absent qualia considerations. These considerations display the following pattern: assuming we had complete knowledge about the neural and functional states which subserve the occurrence of phenomenal consciousness, would it not still be conceivable that these neural states (or states with the same causal r

Abstract: The functionalist view of the nature of the mind is now widely accepted. Like behaviorism and physicalism, functionalism seeks to answer the question "What are mental states?" I shall be concerned with identity thesis formulations of functionalism. They say, for example, that pain is a functional state, just as identity thesis formulations of physicalism say that pain is a physical state

Abstract: It is widely accepted that conscious experience has a physical basis. That is, the properties of experience (phenomenal properties, or qualia) systematically depend on physical properties according to some lawful relation. There are two key questions about this relation. The first concerns the strength of the laws: are they logically or metaphysically necessary, so that consciousness is nothing "over and above" the underlying physical process, or are they merely contingent laws like the law of gravity? This question about the strength of the psychophysical link is the basis for debates over physicalism and property dualism. The second question concerns the shape of the laws: precisely how do phenomenal properties depend on physical properties? What sort of physical properties enter into the laws' antecedents, for instance; consequently, what sort of physical systems can give rise to conscious experience? It is this second question that I address in this paper

Abstract: Functionalism, the philosophical theory that defines mental states in terms of their causal relations to stimuli, overt behaviour, and other inner mental states, has often been accused of being unable to account for the qualitative character of our experimential states. Many times such objections to functionalism take the form of conceivability arguments. One is asked to imagine situations where organisms who are in a functional state that is claimed to be a particular experience either have the qualitative character of that experience altered or absent altogether. Many of these arguments are surprisingly advanced by materialist philosophers. I argue that if the conceivability arguments were successful against functionalism, then they would be successful against their alternative materialist views as well. So the conceivability arguments alone do not provide a good reason for materialists to abandon functionalism. I further argue that functionalism is best understood to be an empirical theory, and if it is so understood then the conceivability arguments have no force against it at all. A further consequence that emerges is that on an empirical functionalist view, qualia, if real, are properties in the domain of psychology

Abstract: Two chronic problems have plagued functionalism in the philosophy of mind. The first is the chauvinism/liberalism dilemma, the second the absent qualia problem. The first problem is addressed by blocking excessively liberal counterexamples at a level of functional abstraction that is high enough to avoid chauvinism. This argument introduces the notion of emotional functional organization (EFO). The second problem is addressed by granting Block's skeptical conclusions with respect to mentality as such, while arguing that qualitative experience is a concomitant of human mentality considered as a special case: a system with EFO implemented in an organic substrate

Abstract: Most philosophers of mind nowadays espouse two metaphysical views: Nonreductive Physicalism and the causal efficacy of the mental. Throughout this work I will refer to the conjunction of both claims as the Causal Autonomy of the Mental. Nevertheless, this position is threatened by a number of difficulties which are far more serious than one would imagine given the broad consensus that it has generated during the last decades. This paper purports to offer a careful examination of some of these difficulties and show the considerable efforts that one has to undertake in order to try to overcome them. The difficulties examined will concern only metaphysical problems common to all special science properties but not specific of mental properties. So, in proposing a functionalist version of Nonreductive Physicalism in what follows, I will not attempt to answer to well known objections such as the absent qualia argument and the like. This should not be interpreted as a limitation! in the scope of this work. On the contrary, in dealing with more general objections we will try to evaluate a position which entails (under common assumptions) the Causal Autonomy of the Mental, namely: Nonreductive Physicalism plus the causal efficacy of special science properties

Abstract: At the very heart of the mind-body problem is the question of the nature of consciousness. It is consciousness, and in particular _phenomenal_ consciousness, that makes the mind-body relation so deeply perplexing. Many philosophers hold that no defi nition of phenomenal consciousness is possible: any such putative defi nition would automatically use the concept of phenomenal consciousness and thus render the defi nition circular. The usual view is that the concept of phenomenal consciousness is one that must be explained by means of specifi c examples and associated comments

Abstract: It is widely accepted that conscious experience has a physical basis. That is, the properties of experience (phenomenal properties, or qualia) systematically depend on physical properties according to some lawful relation. There are two key questions about this relation. The first concerns the strength of the laws: are they logically or metaphysically necessary, so that consciousness is nothing "over and above" the underlying physical process, or are they merely contingent laws like the law of gravity? This question about the strength of the psychophysical link is the basis for debates over physicalism and property dualism. The second question concerns the shape of the laws: precisely how do phenomenal properties depend on physical properties? What sort of physical properties enter into the laws' antecedents, for instance; consequently, what sort of physical systems can give rise to conscious experience? It is this second question that I address in this paper

Abstract: Block (1995) famously warns against the confusion of

Abstract: It is argued that if consciousness is a fundamental ingredient of reality then no any psychophysical law such as Chalmers' principle of organizational invariance is needed to keep coherence between experience and function (conscious action). Indeed Chalmers' proposal suggests epiphenomenal consciousness and is regress to a nineteenth century absurd philosophy. The quantum mechanics is the most successful current physical theory and can naturally accommodate consciousness without violation of physical laws

Abstract: The principle of functional invariance states that it is a natural law that conscious beings with the same functional organization have the same quality of conscious experience. A group of arguments in support of this principle are rejected, on the grounds that they establish at most only the weaker intra-subjective principle that any two stages in the life of a single conscious being that duplicate one another in terms of functional organization also duplicate one another in terms of quality of phenomenal experience

Abstract: Although they may differ on the reason why, many philosophers hold that it is a priori that an object is red if and only if it is such as to look red to normal observers in normal conditions

Abstract:   It is the purpose of this article to explicate the logical implications of a television analogy for perception, first suggested by John R. Smythies (1956). It aims to show not only that one cannot escape the postulation of qualia that have an evolutionary purpose not accounted for within a strong functionalist theory, but also that it undermines other anti-representationalist arguments as well as some representationalist ones