MS, under submission, derived from a Powerpoint presentation at a Conference on Consciousness, Memory, and Perception, in honor of Larry Weiskrantz, City University, London, September 15, 2006.
MS., for an Eastern Division APA Author-Meets-Critics Session on Dorit Bar-On, Speaking My Mind: Expression and Self-Knowledge, Baltimore, December 2007.
One phenomenon pertains roughly to being awake. A person or other creature is conscious when it's awake and mentally responsive to sensory input; otherwise it's unconscious. This kind of consciousness figures most often in everyday discourse.
pain' and ┌I think that p┐ express the pain and the thought that p, themselves. The book is most impressive. It is packed with careful argument, and addresses a remarkable range of important issues about the mind. I have very much enjoyed studying it.
, encapsulates his deep hostility to Marxist thinking. his deep hostility to Marxist thinking. his deep hostility to Marxist thinking. his deep hostility to Marxist thinking. By contrast, my own allusion is friendly, By contrast, my own allusion is friendly, and is meant to point up a nice parallel and is meant to point up a nice parallel my argument has with a schematic my argument has with a schematic aspect of Marx’s thinking. aspect of Marx’s thinking.
There is much in Bridgeman's account that I find congenial and compelling, especially appealing is Bridgeman's application of his thesis to the tie between consciousness and language. Nonetheless, I want to raise some questions about whether the tie he finds between plans and consciousness actually does hold. Not all memory and attention is conscious. Although attention and accessing of memories are required to execute plans, we need not be at all conscious of the relevant states of memory and attention. Nor (...) need we be conscious of the objects that those acts of attention and accessed memories are about. We need not necessarily appeal to the executing of plans to explain the important tie between language and consciousness. (shrink)
Dintre fenomenele mentale, nici unul nu pare să reziste atât de bine explicaţiei precum conştiinţa. Parţial, dificultatea se datorează faptului că folosim termenul „conştient” şi alţii înrudiţi să dea seama de anumite fenomene distincte ale căror legături nu sunt întotdeauna clare. Iar acest lucru duce adesea la amestecarea acestor fenomene distincte. De aceea, orice încercare de a explica conştiinţa trebuie să înceapă prin a distinge diferitele lucruri pe care le numim conştiinţă. Un astfel de fenomen este strâns legat de simplul (...) fapt de a fi în stare de veghe. Noi descriem oamenii şi alte fiinţe ca fiind conştienţi atunci când sunt în stare de veghe şi sistemele lor senzoriale sunt receptive într-un mod normal pentru o stare de veghe. Numesc acest fenomen conştiinţă a fiinţei. În acest sens, conştiinţa este o chestiune biologică, constând în aceea că o fiinţă nu este inconştientă – adică, aproximativ starea opusă somnului sau KO-ului. Însă noi folosim termenul „conştiinţă” şi pentru alte fenomene care par mult mai greu accesibile înţelegerii şi explicaţiei. Astfel, distingem nu numai între fiinţe conştiente şi inconştiente, ci şi între stări mentale ce sunt conştiente şi cele ce nu sunt. Voi numi această a doua proprietate conştiinţă de stare. Este bine cunoscut faptul că nu toate stările mentale sunt conştiente. Stări intenţionale precum credinţele şi dorinţele apar în mod vădit fără a fi conştienţi.1 Şi, în ciuda unor diferenţe de opinie asupra chestiunii, voi argumenta că acelaşi lucru este adevărat şi în privinţa stărilor senzoriale precum durerile şi senzaţiile de culoare. Asemenea stări nu numai că pot apărea în mod inconştient, dar adesea o şi fac.2 Deşi conştiinţa fiinţei şi conştiinţa de stare sunt proprietăţi distincte, este foarte posibil să fie legate în diferite moduri. Poate că, de exemplu, fiinţele trebuie ele însele să fie conştiente pentru ca oricare stare mentală a lor să fie conştientă, deşi dacă visurile obişnuite sunt vreodată stări conştiente, ele constituie contraexemple ale acestei generalizări.3 Oricum ar sta lucrurile în această privinţă, proprietatea conştiinţei fiinţei este relativ neproblematică. Putem constata aceasta luând în considerare fiinţe mai puţin înzestrate mental decât noi ale căror stări mentale nu sunt niciodată conştiente, nici măcar atunci când sunt în stare de veghe.4 Toate stările lor mentale sunt asemănătoare stărilor mentale inconştiente în care ne aflăm atunci când suntem trezi.. (shrink)
I begin by considering Ned Block's widely accepted distinction between phenomenal and access consciousness. I argue that on Block's official characterization a mental state's being access conscious is not a way the state's being conscious in any intuitive sense; that if phenomenal consciousness itself corresponds to an intuitive way of a state's being conscious, it literally implies access consciousness; and that Block misconstrues the theoretical significance of the commonsense distinction. These considerations point to the view that mental states' being conscious (...) consists in their being accompanied by occurrent, assertoric thoughts to the effect that one is in the state in question: what I have elsewhere called higher- order thoughts (HOTs). After outlining the model, I sketch theoretical advantages having to do with introspective consciousness, the relationship between consciousness and speech, and the metacognitive phenomenon known as feeling-of-knowing judgments. I conclude by showing that the HOT model does justice to phenomenal consciousness: Sensory states are not all conscious, and HOTS explain why there is something it is like to be in those which are. (shrink)
Contemporary discussions typically give somewhat sort shrift to the theory of judgment Descartes advances in the Fourth Meditation.' One reason for this relative neglect is presumably the prima facie implausibility of the theory. It sounds odd to say that, in believing something, one's mental affirmation is an act of free will, on a par with freely deciding what to do. In addition, Descartes advances the theory as a way to explain the possibility of human error, which doubtless strikes many as (...) a rather esoteric undertaking. The need to explain error, moreover, arises because of the divine guarantee, and epistemic theodicy is a project unlikely to interest most contemporary readers. And because the theory of judgment postulates two mental.. (shrink)
1. To refute this theory: consciousness is intrinsic to being an intentional or sensory mental state; one cannot understand what it is for states to have sensory or intentional character without knowing what it is for those states to be conscious.
In these comments on Bernard Williams's probing and provocative paper, I shall first try to develop a line of response to the pair of problems Williams poses concerning Aristotle's account of soul. I shall then offer some reactions, of a more general sort, to his discussion of hylomorphism (henceforth "HMism"). In particular, I want to suggest that, though HMism is in part a form of inoffensive materialism, it is more than just that. And I want to urge also that HMism (...) need not be tempted towards the quasi-dualist position that Williams describes. (shrink)
The main goal of Deborah Modrak's penetrating and compelling discussion is to show that Aristotle subscribed "to an integrated model of perceptual and noetic functions" (268). Using Aristotle's phrase (Γ4, 429b13, 21), Modrak describes the integrated model as the view that "the noetic faculty is the perceptual faculty differently disposed" (283). She notes that this interpretation faces certain difficulties, but argues forcefully and incisively that it can nonetheless be sustained.
The focus of Mark Rowlands’s admirable, richly argued book is phenomenal consciousness, in particular, how such consciousness arises from processes that are not themselves phenomenally conscious. Rowlands examines several views on this question, arguing that their failures point toward his own intriguing, novel position, which he develops in the final three chapters.
But there is another reason, equally important. We distinguish among thoughts, feelings, and sensations by virtue of their characteristic representational properties. In particular, we describe thoughts and emotions in terms of the things they are about and how they represent those things. And we characterize sensations by reference to their qualitative properties and the things..
A striking difference between those fields we classify as humanities and those we regard as sciences is the attitude within each field toward its history. Learning about literature, music, or the visual arts requires becoming knowledgeable about a significant amount of the history of those areas. And education in these fields, at whatever level, invariably involves some study of great accomplishments in the past. By contrast, scientific work and standard scientific textbooks make little reference to the history of the science (...) in question, and such reference is typically relegated to the appreciative mention in passing of important empirical discoveries or theoretical innovations. And professional training in the sciences, both graduate and undergraduate, involves no serious examination of the achievements or methodology of past scientific work, no matter how impressive and influential those achievements may have been. Progress dominates thinking in the sciences, and that emphasis may seem to explain such casual and occasionally condescending reference to the history of the sciences. But progress occurs in the humanities as well; even if some of the greatest artistic accomplishments are well in the past, there is remarkable innovation in style, technique, and methodology in the various arts. Some of the most monumental accomplishments in the sciences, moreover, are historical; nobody is likely to surpass the quality and importance of Newton's achievements, and few will ever equal those of Einstein. So it is unlikely that attitudes towards progress or past accomplishments can explain the divergent attitudes that fields in the sciences and humanities exhibit towards their own history. We can better understand this contrast by appeal to a characteristic feature of the arts. Nobody today writes in the manner of Milton, Racine, or Shakespeare, or composes in the manner of Bach or Beethoven, or paints in the style of Vermeer, Renoir, or Da Vinci. Even Picasso's early, somewhat ostentatious paintings in the styles of various past masters were more to show his prodigious abilities than they were original artistic endeavors.. (shrink)
Few contemporary researchers in psychology, philosophy, and the cognitive sciences have any doubt about whether mental phenomena occur without being conscious. There is extensive and convincing clinical and experimental evidence for the existence of thoughts, desires, and related mental states that aren’t conscious. We characterize thoughts, desires, intentions, expectations, hopes, and many other mental states in terms of the things they are about and, more fully, in terms of their content, as captured by a sentence nominalization, such as a clause (...) beginning with the word ‘that’. The philosophical literature follows Franz Brentano’s adaptation of Thomist terminology in referring to all such states as intentional states. But there is another type of mental phenomena, which lack intentionality and whose mental nature consists instead of some qualitative feature. These states include bodily sensations, such as aches and pains, and perceptual states, such as visual sensations of color and tactile sensations of heat and cold. And these states all exhibit some mental quality or another, such as the mental quality distinctive of pain or the mental quality of red or blue.1 And even theorists who acknowledge that intentional states can and do occur without being conscious have sometimes insisted that qualitative states cannot. There is, according to these theorists, nothing to a state’s being qualitative or exhibiting some mental quality unless that state is conscious – unless it is, as we might metaphorically say, “lighted up”. It’s striking that Freud himself seems to have adopted this double standard toward the two types of mental state. In his metapsychological paper, “The Unconscious”, for example, he writes that “all the categories which we employ to describe conscious mental acts, such as ideas, purposes, resolutions, and so forth, can be applied to [unconscious mental occurrences]” (Freud 1915e, p. 168). But he seems here to have in.. (shrink)
(1) Most commonly these terms are used to describe people. People and other creatures are conscious if they are awake and responsive to sensory stimulation. Because this is a property of creatures, we can call it creature consciousness. An individual lacks such consciousness if it is asleep, in a coma, anesthetized, and so forth. Creature consciousness demands a mainly biological explanation, as against an explanation in mainly psychological terms.
Conscious mental states are states we are in some way aware of. I compare higher-order theories of consciousness, which explain consciousness by appeal to such higher-order awareness (HOA), and first-order theories, which do not, and I argue that higher-order theories have substantial explanatory advantages. The higher-order nature of our awareness of our conscious states suggests an analogy with the metacognition that figures in the regulation of psychological processes and behaviour. I argue that, although both consciousness and metacognition involve higher-order psychological (...) states, they have little more in common. One thing they do share is the possibility of misrepresentation; just as metacognitive processing can misrepresent one’s cognitive states and abilities, so the HOA in virtue of which one’s mental states are conscious can, and sometimes does, misdescribe those states. A striking difference between the two, however, has to do with utility for psychological processing. Metacognition has considerable benefit for psychological processing; in contrast, it is unlikely that there is much, if any, utility to mental states’ being conscious over and above the utility those states have when they are not conscious. (shrink)
Remarks such as âI am in painâ and âI think that itâs rainingâ are puzzling, since they seem to literally describe oneself as being in pain or having a particular thought, but their conditions of use tend to coincide with unequivocal expressions of pain or of that thought. This led Wittgenstein, among others, to treat such remarks as expressing, rather than as reporting, oneâs mental states. Though such expressivism is widely recognized as untenable, Bar-On has recently advanced a neo-expressivist view, (...) on which such remarks exhibit characteristics of both expressions of mental states and reports of those states. I argue against any attempt to see such remarks as both reporting and expressing the same mental states, and that a correct account rests on distinguishing the truth conditions of such remarks from their conditions of use. (shrink)
Strawson’s challenging and provocative defence of panpsychism1 begins by sensibly insisting that physicalism, properly understood, must unflinchingly countenance the occurrence of conscious experiences. No view, he urges, will count as ‘real physicalism’ (p. 4) if it seeks to get around or soften that commitment, as versions of socalled physicalism sometimes do. Real physicalism (hereinafter physicalism tout court) must accordingly reject any stark opposition of mental and physical, which is not only invoked by many followers of Descartes, but even countenanced by (...) many recent physicalists. Conscious experiences, Strawson persuasively urges, are a special case of the physical, just as cows are animals. Panpsychism enters the picture because, despite the physical nature of conscious experiences, Strawson maintains that we cannot describe or explain the experiential using the terms of physics or neurophysiology. Since the experiential is nonetheless physical, Strawson concludes that the physical ultimates must, in addition to whatever properties physics and neurophysiology reveal, have experiential properties as well. Strawson argues that we cannot avoid this conclusion by maintaining that combinations of physical ultimates constitute or give rise to experiential properties. Physical ultimates cannot give rise to conscious experience unless those ultimates are themselves in some way ‘intrinsically experiential’ (p. 22). The experiential cannot emerge from nonexperiential ultimates in the way that macroscopic liquidity is standardly held to emerge from molecular properties. Strawson concludes that at least some physical ultimates must be ‘intrinsically experience-involving’ (p. 22); and, since it’s reasonable to see the physical ultimates as homogeneous in nature, we should assume that they all have experiential properties. (shrink)
All mental states, including thoughts, feelings, perceptions, and sensations, often occur consciously. But they all occur also without being conscious. So the first thing a theory of consciousness must do is explain the difference between thoughts, feelings, perceptions, and sensations that are conscious and those which are not.
The first four essays develop various aspects of that theory.The next three essays present Rosenthal's homomorphism theory of mental qualities and qualitative ...
A touchstone of much modern theorizing about the mind is the idea, still tac- itly accepted by many, that a state's being mental implies that it's conscious. This view is epitomized in the dictum, put forth by theorists as otherwise di-.
The so-called unity of consciousness consists in the compelling sense we have that all our conscious mental states belong to a single conscious subject. Elsewhere I have argued that a mental state's being conscious is a matter of our being conscious of that state by having a higher-order thought (HOT) about it. Contrary to what is sometimes argued, this HOT model affords a natural explanation of our sense that our conscious states all belong to a single conscious subject. HOTs often (...) group states together, so that each HOT is about a cluster of target states; single HOTs represent qualitative states as spatially unified and intentional states as unified inferentially. More important, each HOT makes one conscious of oneself in a seemingly immediate way, encouraging a sense of unity across HOTs. And the same considerations that make us assume that our first-person thoughts all refer to the same self apply also to HOTs; becoming conscious of our HOTs in introspection thus leads to a sense that our conscious states are unified in a single self. I argue that neither essential-indexical reference to oneself nor the alleged immunity to error through misidentification conflicts with this account. I close by discussing the apparent connection of unity with free agency. (shrink)
All mental states, including thoughts, feelings, perceptions, and sensations, often occur consciously. But they all occur also without being conscious. So the first thing a theory of consciousness must do is explain the difference between thoughts, feelings, perceptions, and sensations that are conscious and those which are not.
Moore’s paradox occurs with sentences, such as (1) It’s raining and I don’t think it’s raining. which are self-defeating in a way that prevents one from making an asser- tion with them.1 But Mark Crimmins has given us a case of a sentence that is syntactically just like (1) but is nonetheless assertible. Suppose I know somebody, and know or have excellent reason to believe that I know that very person under some other guise. I do not know what that (...) other guise is, though I do know that I believe that the person I know under that other guise is an idiot. (shrink)
The problem of consciousness is to say what it is for some of our thoughts, feelings, and sensations to be conscious, given that others are not. This is different from saying what it is for a person to be conscious or not conscious. Even when people are conscious, many of their thoughts and sensations typically are not. And there's nothing problematic about a person's being conscious; it's just the person's being awake and responsive to sensory input.
Everyone — or almost everyone — was agreed that what is [mental] … has a common quality in which its essence is expressed: namely the quality of being conscious — unique, indescribable, but needing no description. All that is conscious … is [mental], and conversely all that is [mental] is conscious; that is self-evident and to contradict it is nonsense.
Ned BlockÕs influential distinction between phenomenal and access consciousness has become a staple of current discussions of consciousness. It is not often noted, however, that his distinction tacitly embodies unargued theoretical assumptions that favor some theoretical treatments at the expense of others. This is equally so for his less widely discussed distinction between phenomenal consciousness and what he calls reflexive consciousness. I argue that the distinction between phenomenal and access consciousness, as Block draws it, is untenable. Though mental states that (...) have qualitative character plainly differ from those with no mental qualities, a mental stateÕs being conscious is the same property for both kinds of mental state. For one thing, as Block describes access consciousness, that notion does not pick out any property that we intuitively count as a mental stateÕs being conscious. But the deeper problem is that BlockÕs notion of phenomenal consciousness, or phenomenality, is ambiguous as between two very different mental properties. The failure to distinguish these results in the begging of important theoretical questions. Once the two kinds of phenomenality have been distinguished, the way is clear to explain qualitative consciousness by appeal to a model such as the higher-order-thought hypothesis. Ó 2002 Elsevier Science (USA). All rights reserved. (shrink)
All mental states, including thoughts, feelings, perceptions, and sensations, often occur consciously. But they all occur also without being conscious. So the first thing a theory of consciousness must do is explain the difference between thoughts, feelings, perceptions, and sensations that are conscious and those which are not.
Striking experimental results by Benjamin Libet and colleagues have had an impor- tant impact on much recent discussion of consciousness. Some investigators have sought to replicate or extend Libet’s results (Haggard, 1999; Haggard & Eimer, 1999; Haggard, Newman, & Magno, 1999; Trevena & Miller, 2002), while others have focused on how to interpret those findings (e.g., Gomes, 1998, 1999, 2002; Pockett, 2002), which many have seen as conflicting with our commonsense picture of mental functioning.
Color subjectivism is the view that color properties are mental properties of our visual sensations, perhaps identical with properties of neural states, and that nothing except visual sensations and other mental states exhibits color properties. Color phys- icalism, by contrast, holds that colors are exclusively properties of visible physical objects and processes.
Because metacognition consists in our having mental access to our cognitive states and mental states are conscious only when we are conscious of them in some suitable way, metacognition and consciousness shed important theoretical light on one another. Thus, our having metacognitive access to information carried by states that are not conscious helps con?rm the hypothesis that a mental state.
Mind-body materialism is at its most inviting in the context of trying to give a unified treatment of the natural world. And the principle challenge it faces is to do justice to the distinguishing features of mental phenomena, which set them off from nonmental, physical reality. This challenge it not easy to meet. In 1971 I suggested that the difficulty in meeting it makes especially appealing the eliminative materialism of Feyerabend and Rorty. If adopting the materialist view that mental (...) phenomena are physical in nature prevents us from giving a satisfactory account of what is distinctive about the mental, perhaps the trouble is not with materialism but with the mental. If we can describe and explain everything about the world in physical terms but cannot give a satisfactory account of the distinctively mental, why not conclude that there simply are no mental states and events? Physical terms would then suffice to describe and explain the phenomena we now classify as mental. Even if describing and explaining these things physically is not a practical option, the possibility of doing so would underwrite the eliminative materialist position. (shrink)
Because there is a fair amount of overlap in the points by Balog and Rey, I will organize this response topically, referring specifically to each commentator as rele- vant. And, because much of the discussion focuses on my higher-order-thought (HOT) hypothesis independent of questions about metacognition, I will begin by addressing a cluster of issues that have to do with the status, motivation, and exact formulation of that hypothesis.
red and round. According to common sense, the red, round thing we see is the tomato itself. When we have a hallucinatory vision of a tomato, however, there may be present to us no red and round phys- ical object. Still, we use the words 'red' and 'round' to describe that situation as well, this time applying them to the visual experience itself. We say that we have a red, round visual image, or a visual experience of a red disk, (...) or some such. Because we see physical objects far more often than we hallucinate, we apply terms for color and shape to physical objects far more often than to visual experiences. Moreover, different theories of perception explain in different ways the applications such terms have to physical objects and to visual experiences. But whatever their frequency and explanation, it seems clear that both sorts of application occur. (shrink)
Dualism is the view that mental phenomena are, in some respect, nonphysical. The best-known version is due to Descartes, and holds that the mind is a nonphysical substance. Descartes argued that, because minds have no spatial properties and physical reality is essentially extended in space, minds are wholly nonphysical. Every human being is accordingly a composite of two objects: a physical body, and a nonphysical object that is that human being's mind. On a weaker version of dualism, which contemporary thinkers (...) find more acceptable, human beings are physical substances but have mental properties, and those properties aren't physical. This view is known as property dualism, or the dual-aspect theory. (shrink)
be realized. Whatever gets access to phenomenal awareness (to consciousness and P-consciousness are almost always present or P-consciousness as described by Block) is represented within this absent together.
In Descartes's time the issue between materialists and their opponents was framed in terms of substances. Materialists such as Thomas Hobbes and Pierre Gassendi maintained that people are physical systems with abilities that no other physical systems have; people, therefore, are special kinds of physical substance. Descartes's DUALISM, by contrast, claimed that people consist of two distinct substances that interact causally: a physical body and a nonphysical, unextended substance. The traditional.
Theories of what it is for a mental state to be conscious must answer two questions. We must say how we're conscious of our conscious mental states. And we must explain why we seem to be conscious of them in a way that's immediate. Thomas Natsoulas (1993) distinguishes three strategies for explaining what it is for mental states to be conscious. I show that the differences among those strategies are due to the divergent answers they give to the foregoing questions. (...) Natsoulas finds most promising the strategy that amounts to the higher-order-thought hypothesis that I've defended elsewhere. But he raises a difficulty for it, which he thinks probably can be met only by modifying that strategy. I argue that this is unnecessary. The difficulty is a special case of a general question, the answer to which is independent of any issues about consciousness. So it's no part of a theory of consciousness to address the problem, much less solve it. Moreover, the difficulty seems to have intuitive force only given the picture that underlies the other two explanatory strategies, which both Natsoulas and I reject. (shrink)
whatever it is that occurs in between the two. Though superficially tempting, this idea heightens the air of mystery surrounding consciousness. As far..
This anthology brings together readings mainly from contemporary philosophers, but also from writers of the past two centuries, on the philosophy of mind. Some of the main questions addressed are: is a human being really a mind in relation to a body; if so, what exactly is this mind and how it is related to the body; and are there any grounds for supposing that the mind survives the disintegration of the body?
No mental phenomenon is more central than consciousness to an adequate understanding of the mind. Nor does any mental phenomenon seem more stubbornly to resist theoretical treatment. Consciousness is so basic to the way we think about the mind that it can be tempting to suppose that no mental states exist that are not conscious states. Indeed, it may even seem mysterious what sort of thing a mental state might be if it is not a conscious state. On this way (...) of looking at things, if any mental states do lack consciousness, they are exceptional cases that call for special explanation or qualification. Perhaps dispositional or cognitive states exist that are not conscious, but nonetheless count as mental states. (shrink)
Much of the perplexity that motivates modern discussion of the nature of mind derives indirectly from the striking success of physical explanation. Not only has physics itself advanced at a remarkable pace in the last four centuries; every hope has been held out that, in principle, all science can be understood and ultimately studied in terms of mechanisms proper to physics. Seeing all natural phenomena as explicable in terms appropriate to physics, however, makes the mental seem to be a singularity (...) in nature. Chemistry and biology may well be reducible to physics, but the same seems hardly possible for the mental. The gulf between mind and physics seems too great to bridge, and the success of physics guarantees its standing. The place of mind in nature is thereby rendered problematic. This line of reasoning has tempted thinkers since Descartes to see the mind as not only independent of other natural phenomena, but as even somehow lying outside the natural order itself. (shrink)
In response to your kind offer to read through portions of the typescript of my thesis pertaining to your views on intentionality, I am sending you a copy of an introductory section to such a chapter.{1} The enclosed typescript represents a first draft, for which I apologize, but I thought it might be useful to get any comments you might have in at the ground floor, so to speak.
Edited in hypertext by Andrew Chrucky. Reprinted with the permission of Professor David Rosenthal. Editor's Note: Due to the limitation of current hypertext, the following conventions have been used. In general, if an expression has some mark over it, that mark is placed as a prefix to the expression. All Greek characters (except phi) are rendered by their names. Subscripts are placed in parentheses as concatenated suffixes: thus, e.g., H(2)O is the chemical formula for water. Sellars' dot quotes are expressed (...) by bold periods. (shrink)
One phenomenon pertains roughly to being awake. A person or other creature is conscious when it's awake and mentally responsive to sensory input; otherwise it's unconscious. This kind of consciousness figures most often in everyday discourse.
