Gray extrapolates from circuit models of psychopathology to propose neural substrates for the contents of consciousness. I raise three concerns: knowledge of synaptic arrangements may be inadequate to fully support his model; latent inhibition deficits in schizophrenia, a focus of this and related models, are complex and deserve replication; and this conjecture omits discussion of the neuropsychological basis for the contents of the unconscious.

Creativity has a special role in enabling humans to develop beyond the fulfilment of simple primary functions. This factor is significant for Artificial Intelligence (AI) developers who take replication to be the primary goal, since moves toward creating autonomous artificial-beings beg questions about their potential for creativity. Using Wittgenstein’s remarks on rule-following and language-games, I argue that although some AI programs appear creative, to call these programmed acts creative in our terms is to misunderstand the use of this word in (...) language. I conclude that replication is not the best way forward for AI development in matters of creativity. (shrink)

The Gestalt principle of isomorphism reveals the primacy of subjective experience as a valid source of evidence for the information encoded neurophysiologically. This theory invalidates the abstractionist view that the neurophysiological representation can be of lower dimensionality than the percept to which it gives rise.

When the various disciplines participating in cognitive science are listed, philosophy almost always gets a guernsey. Yet, a couple of years ago at the conference of the Cognitive Science Society in Boulder (USA), there was no philosophy or philosopher with any prominence on the program. When queried on this point, the organizer (one of the "superstars" of the field) claimed it was partly an accident, but partly also due to an impression among members of the committee that philosophy is basically (...) a waste of time. Philosophy, they thought, is mostly obscure bullshit that does little to help, and much to hinder, real progress in cognitive science. (shrink)

This paper tries to remove some obstacles standing in the way of considering mental properties as both genuine natural kinds and causally efficacious rather than epiphenomena. As the case of temperature shows, it is not justified to conclude from a property being multiply realizable to it being irreducible. Yet Kim's argument to the effect that if a property is multiply realizable with a heterogeneous reduction base then it cannot be a natural kind and possesses only derivative “epiphenomenal” causal efficacy is (...) not conclusive either. The fact that temperature is, but jade is not, a natural kind cannot be established by comparing the heterogeneity of their respective reduction bases, but rather by the fact that the former is and the latter is not embedded in laws of nature. (shrink)

With its strategic consideration of phenomenal consciousness illusorily seeming to us, illusionism claims to deny phenomenality and thereby obviate the hard problem of consciousness. The problem with illusionism, however, is that, although its thesis appears persuasively simple, it strikes as absurd insofar as the phenomenal illusions themselves also seem as much as phenomenality, keeping no fundamental differences between the two. In short, it reinforces the same phenomenon/issue, i.e., phenomenality, that it claims to deny/avoid. This single absurdity is reflective of its (...) self-refuting nature, and it alone is enough for a rejection of illusionism. However, does illusionism have any reasonable justification to defend itself in the face of the experientially undeniable reality of phenomenal consciousness? This paper attempts to find out if there is any such illusionist justification. (shrink)

The human issue with the concept of finality constitutes a fundamental platform for the philosophical concept of transhumanism. This paper addresses the historical-philosophical perspective of transhumanism with emphasis put on the 18th and 19th centuries, whereby possible anticipatory actions with respect to transhumanist thought are analyzed. In this sense, the need for a philosophical reflection on transhumanism is justified. The main part of this paper is aimed at philosophical and ethical questions related to cryonics as being one of the most (...) dominant and feasible transhumanist practices. The characteristics and critical analysis of cryonics focuses on the problem of understanding death from a philosophical standpoint. (shrink)

Philosophical Investigations, EarlyView.

This article takes up the proposal that action and expression enable perceptual knowledge of other minds, a proposal that runs counter to a tradition of thinking that other minds are special in that they are essentially unobservable. I argue that even if we accept this proposal regarding perceptual knowledge, there is still a difference between knowing another person and knowing other things. I articulate this difference by pointing out that I can know another person by sharing knowledge with her. Such (...) sharing is expressed in the use of the second-person pronoun. Thus, I argue, other minds are indeed special as objects of knowledge, but not in the way the tradition has supposed. (shrink)

Philosophers have recently argued that since there are people who are blind, but don't know it, and people who echolocate, but don't know it, conscious introspection is highly unreliable. I contend that a second look at Anton's syndrome, human echolocation, and ‘facial vision’ suggests otherwise. These examples do not support skepticism about the reliability of introspection.

Philosophers have recently argued that since there are people who are blind, but don't know it, and people who echolocate, but don't know it, conscious introspection is highly unreliable. I contend that a second look at Anton's syndrome, human echolocation, and ‘facial vision’ suggests otherwise. These examples do not support skepticism about the reliability of introspection.

Ordinary psychological predicates, and the phenomena we report to by means of them, can be grouped together into different categories. For instance, it is usual to group together phenomena such as belief and expectancy in a category of ‘propositional attitudes’, whereas sensations, like pain and itch, in a distinct one. Which taxonomy of the mental would be plausible to be adopted in contexts such as those of introductory books to the philosophy of mind, i.e., when we need to set out (...) only from minimal assumptions regarding these predicates and phenomena? This article suggests some desiderata and principles for such a taxonomy; exposes and critically assesses some taxonomies presented in introductory books to the philosophy of mind; and proposes the sketch of an alternative one. (shrink)

Gray, like other recent authors, seeks a scientific approach to consciousness, but fails to provide a biologically convincing description, partly because he implicitly bases his model on a computationalist foundation that embeds the contents of thought in irreducible symbolic representations. When patterns of neural activity instantiating conscious thought are shorn of homuncular observers, it appears most likely that these patterns and the circuitry that compares them with memories and plans should be found distributed over large regions of neocortex.

An active role for conscious processes in the production of behaviour is proposed, involving top level controls in a hierarchy of behavioural control. It is suggested that by inhibiting or sensitizing lower levels in the hierarchy conscious processes can play a role in the organization of ongoing behaviour. Conscious control can be more or less evident, according to prevailing circumstances.

This paper proposes the ‘AGENCY model’ of conscious state attribution, according to which an entity's displaying certain relatively simple features (e.g. eyes, distinctive motions, interactive behavior) automatically triggers a disposition to attribute conscious states to that entity. To test the model's predictions, participants completed a speeded object/attribution task, in which they responded positively or negatively to attributions of mental properties (including conscious and non-conscious states) to different sorts of entities (insects, plants, artifacts, etc.). As predicted, participants responded positively to conscious (...) state attributions only for those entities that typically display the simple features identified in the AGENCY model (eyes, distinctive motion, interaction) and took longer to deny conscious states to those entities. (shrink)

The distinction between cognitive and perceptual theories of emotion is entrenched in the literature on emotion and is openly used by individual emotion theorists when classifying their own theories and those of others. In this paper, I argue that the distinction between cognitive and perceptual theories of emotion is more pernicious than it is helpful, while at the same time insisting that there are nonetheless important perceptual and cognitive factors in emotion that need to be distinguished. A general representational metatheoretical (...) framework for reconciling cognitive and perceptual theories is proposed. This is the Representational Theory of Emotion (RTE). A detailed case study of Antonio Damasio's important new contribution to emotion theory is presented in defense of the RTE. The paper is intended for readers interested in the foundations of emotion theory and cognitive science. (shrink)

This paper aims to provide a rational reconstruction of the claim of eliminative materialism (EM), espoused by Paul and Patricia Churchland. It will identify and clarify alternative understandings of that view and assess the version that is the most plausible interpretation in the light of the Churchlands' writings and contemporary discussions. The result of the analysis is that eliminativism is best understood as a methodological thesis regarding the scope and depth of the possible revision of (scientific and folk) usage of (...) FP terms and principles. The problem is important not only, and nor primarily, for exegetical purposes. EM functions in contemporary metaphysics of mind mainly as a point of negative reference: for this reason, it is important to carefully formulate the main claim of EM so that the theorists taking part in the debate know what they actually disagree with. The careful formulation provided by this paper could show other philosophers that their position is not, in fact, as far from EM as they might have thought. (shrink)

U. T. Place claims that philosophical problems concerning the true nature of mind-brain relationship disappears or is settled adhering to materialism, especially type identity theory of mind. He takes above claim as a reasonable scientific hypothesis. I shall argue why it is not as he claims. At first, to pave the way for refutation, I will briefly clarify Place's approach to the subject in hand; although the rest of the paper will also contain more details about his position. Then, I (...) will reduce his position into four theses and try to prove that the main claim of type identity theory is neither reasonable nor a mere scientific problem in disguise. I think that we ought to regard type identity theory, at most, just as a hypothesis which approximately displays the function of mind-brain relationship but tells us nothing justifiably about its true nature. (shrink)

Robust theories concerning the connection between consciousness and brain function should derive not only from empirical evidence but also from a well grounded inind-body ontology. In the case of the comparator hypothesis, Gray develops his ideas relying extensively on empirical evidence, but he bounces irresolutely among logically incompatible metaphysical theses which, in turn, leads him to excessively skeptical conclusions concerning the naturalization of consciousness.

This commentary elaborates on Gray's conclusion that his neurophysiological model of consciousness might explain how consciousness arises from the brain, but does not address how consciousness evolved, affects behaviour or confers survival value. The commentary argues that such limitations apply to all neurophysiological or other third-person perspective models. To approach such questions the first-person nature of consciousness needs to be taken seriously in combination with third-person models of the brain.

Drawing on previous models of anxiety, intermediate memory, the positive symptoms of schizophrenia, and goal-directed behaviour, a neuropsychological hypothesis is proposed for the generation of the contents of consciousness. It is suggested that these correspond to the outputs of a comparator that, on a moment-by-moment basis, compares the current state of the organism's perceptual world with a predicted state. An outline is given of the information-processing functions of the comparator system and of the neural systems which mediate them. The hypothesis (...) appears to be able to account for a number of key features of the contents of consciousness. However, it is argued that neitherthis nor any existing comparable hypothesis is yet able to explain why the brain should generate conscious experience of any kind at all. (shrink)

The doctrine of eliminative materialism holds that belief-desire psychology is massively referentially disconnected. We claim, however, that it is not at all obvious what it means to be referentially (dis)connected. The two major accounts of reference both lead to serious difficulties for eliminativism: it seems that elimination is either impossible or omnipresent. We explore the idea that reference fixation is a much more local, partial, and context-dependent process than was supposed by the classical accounts. This pragmatic view suggests that elimination (...) is not the prime model for understanding the complex relations between the mind and brain sciences, and that we have little ground for concluding that in general psychological kinds do not exist. We suggest that reference changes are better seen as continuous rather than completely eliminative. (shrink)

The potential for artificial intelligences and robotics in achieving the capacity of consciousness, sentience and rationality offers the prospect that these agents have minds. If so, then there may be a potential for these minds to become dysfunctional, or for artificial intelligences and robots to suffer from mental illness. The existence of artificially intelligent psychopathology can be interpreted through the philosophical perspectives of mental illness. This offers new insights into what it means to have either robot or human mental disorders, (...) but may also offer a platform on which to examine the mechanisms of biological or artificially intelligent psychiatric disease. The possibility of mental illnesses occurring in artificially intelligent individuals necessitates the consideration that at some level, they may have achieved a mental capability of consciousness, sentience and rationality such that they can subsequently become dysfunctional. The deeper philosophical understanding of these conditions in mankind and artificial intelligences might therefore offer reciprocal insights into mental health and mechanisms that may lead to the prevention of mental dysfunction. (shrink)

Gray unwisely melds together two distinguishable contributions of consciousness: one to epistemology, the other to evolution. He also renders consciousness needlessly invisible behaviorally.

Currently, brain tissue transplantations are being developed as a clinical-therapeutic tool in neurodegenerative diseases such as Parkinson's or Alzheimer's disease. From an ethical point of view, distinguishing between the preservation and an alteration of personal identity seems to be central to determining the scope for further application of brain tissue transplantation therapy. The purpose of this article is to review "standard" arguments which are used on the one hand by proponents to prove preservation of personal identity and by opponents on (...) the other hand to prove that brain tissue transplantation results in an altered personal identity. Proponents and opponents are shown to use the same arguments, albeit with different presuppositions. These presuppositions concern the meaning of the term "identity", either numerical or qualitative, the definition of brain identity, either structurally or functionally, and the relationship between mental states, psychological functions and neurophysiological properties as criteria for personal identity. Furthermore the respective neurophysiological, clinical and philosophical evidence for the different presuppositions are discussed. It is concluded that evaluation of personal identity in brain tissue transplantation should not only rely on the "standard" arguments but, additionally, neurophysiological, clinical and philosophical implications should be discussed. (shrink)

I put forward a version of the Cartesian Argument from Doubt for mind–body dualism. My version utilizes de re statements, which means that it is not vulnerable to the usual charge of intensional fallacy. The key de re statement is, ‘Body is such that its existence is entailed by Mind’s believing that Body does not exist’, which is false, whereas the respective ‘Mind is such that its existence is entailed by Mind’s believing that Body does not exist’ is true.

The moot point of the Western philosophical rhetoric about free will consists in examining whether the claim of authorship to intentional, deliberative actions fits into or is undermined by a one-way causal framework of determinism. Philosophers who think that reconciliation between the two is possible are known as metaphysical compatibilists. However, there are philosophers populating the other end of the spectrum, known as the metaphysical libertarians, who maintain that claim to intentional agency cannot be sustained unless it is assumed that (...) indeterministic causal processes pervade the action-implementation apparatus employed by the agent. The metaphysical libertarians differ among themselves on the question of whether the indeterministic causal relation exists between the series of intentional states and processes, both conscious and unconscious, and the action, making claim for what has come to be known as the event-causal view, or between the agent and the action, arguing that a sort of agent causation is at work. In this paper, I have tried to propose that certain features of both event-causal and agent-causal libertarian views need to be combined in order to provide a more defendable compatibilist account accommodating deliberative actions with deterministic causation. The ‘‘agent-executed-eventcausal libertarianism’’, the account of agency I have tried to develop here, integrates certain plausible features of the two competing accounts of libertarianism turning them into a consistent whole. I hope to show in the process that the integration of these two variants of libertarianism does not challenge what some accounts of metaphysical compatibilism propose—that there exists a broader deterministic relation between the web of mental and extra-mental components constituting the agent’s dispositional system—the agent’s beliefs, desires, short-term and long-term goals based on them, the acquired social, cultural and religious beliefs, the general and immediate and situational environment in which the agent is placed, etc. on the one hand and the decisions she makes over her lifetime on the basis of these factors. While in the ‘‘Introduction’’ the philosophically assumed anomaly between deterministic causation and the intentional act of deciding has been briefly surveyed, the second section is devoted to the task of bridging the gap between compatibilism and libertarianism. The next section of the paper turns to an analysis of folk-psychological concepts and intuitions about the effects of neurochemical processes and prior mental events on the freedom of making choices. How philosophical insights can be beneficially informed by taking into consideration folk-psychological intuitions has also been discussed, thus setting up the background for such analysis. It has been suggested in the end that support for the proposed theory of intentional agency can be found in the folk-psychological intuitions, when they are taken in the right perspective. (shrink)

To a significant extent, mainstream Western philosophy is not empirically minded. The neurophilosophy of the Churchlands seems to exhibit the greatest divergence from this orientation by far. Extending and neuralizing Quine’s naturalism, the Churchlands have been known to challenge most assumptions and principles of contemporary mainstream analytic and even existing naturalistic philosophies. Even the philosophers who identify themselves as full-blown naturalists have an inexplicably negative attitude toward the Churchlands. For many philosophers of the mind, the Churchlands’ problem is not that (...) they are philosophically wrong, but that they have no philosophical approach that could be wrong. They are nonphilosophers working at philosophy departments. Proper philosophy is not what they do or think they are doing. In this article, I argue to the contrary. The Churchlands would seem surprisingly moderate, and neither trivial nor near-trivial, when closely scrutinized. (shrink)

Gray has expanded his account of schizophrenia to explain consciousness as well. His theory explains neither phenomenon adequately because he treats individual minds in isolation. The primary function of consciousness is to permit high level interactions with other conscious beings. The key symptoms of schizophrenia reflect a failure of this mechanism.

It is accepted that “primary awareness” may emerge from the integration of two classes of information. It is unclear, however, why this cannot take place within the comparator rather than in conjunction with feedback to the perceptual systems. The model has plausibility in relation to the continuity of conscious experience in the normal waking state and may be extended to encompass certain aspects of the “sense of self” which are frequently disrupted in psychotic patients.

As Gray insists, his comparator model proposes a brute correlation only – of consciousness with septohippocampal output. I suggest that the comparator straddles a feedback loop that boosts the activation ofnovelrepresentations, thus helping them feature in present or recollected experience. Such a role in organizing conscious contents would transcend correlation and help explain how consciousness emerges from brain function.

Gray's account is remarkable in its depth and scope but too little attention is paid to poor correspondences with the literature on hippocampal/subicular damage, the theta rhythm, and novelty detection. An alternative account, focusing on hippocampal involvement in organizing memories in a way that makes them accessible to conscious recollection but not in access to consciousness per se, avoids each of these limitations.

The first claim in the target article was that there is as yet no transparent, causal account of the relations between consciousness and brain-and-behaviour. That claim remains firm. The second claim was that the contents of consciousness consist, psychologically, of the outputs of a comparator system; the third consisted of a description of the brain mechanisms proposed to instantiate the comparator. In order to defend these claims against criticism, it has been necessary to clarify the distinction between consciousness-as-such and the (...) contents of consciousness, to widen the description of the neural machinery instantiating the comparator system, and to clarify the relationship between the contents of consciousness in the here-and-now and episodic memory. (shrink)

Gray mistakenly thinks I have rejected the sort of theoretical enterprise he is undertaking, because, according to him, I think that "more data" is all that is needed to resolve all the issues. Not at all. My stalking horse was the bizarre (often pathetic) claim that no amount of empirical, "third-person point-of-view" science (data plus theory) could ever reduce the residue of mystery about consciousness to zero. This "New Mysterianism" (Flanagan, 1991) is one that he should want to combat as (...) vigorously as I have done. (shrink)

Qualia in the node-point between mind and body: Dilemma of present discussion about the subjectivity of mental states. The present discussion about qualia shows a bewildering variety of different positions. We show implicit assumptions about brain, subject, and qualia of this complex discussion. By means of three assumptions we divide the discussion about qualia into three different positions (proposition, opposition, intermediate solutions). These positions and their exemplaric authors are briefly presented along the lines of the three assumptions. The next step (...) shows how each position solves the dilemma which arises if one relates all three assumptions by eliminating at least one of the three assumptions. Finally, general problems in the discussion of qualia are shown by means of which the dilemma of the relation between brain, subject and qualia may be brought closer to a solution without eliminating one assumption. (shrink)

Recently influential “rationalist” views of self-knowledge about our rational attitudes hold that such self-knowledge is essentially connected to rational agency, and therefore has to be particularly reliable, immediate, and distinct from third-personal access. This approach has been challenged by “theory theory” or “interpretationist” views of self-knowledge: on such views, self-knowledge is based on the interpretation of information about ourselves, and this interpretation involves the same mindreading mechanisms that we use to access other persons’ mental states. Interpretationist views are usually dismissed (...) as implausible and unwarranted by advocates of rationalism. In this article, I argue that rationalists should revise their attitude towards interpretationism: they can, and ought to, accept themselves a form of interpretationism. First, I argue that interpretationism is correct at least for a substantive range of cases. These are cases in which we respond to a question ab.. (shrink)

Alexei V. Samsonovich, Int. J. Mach. Conscious., 06, 49 (2014). DOI: 10.1142/S1793843014400083.

If sensations were behaviorally conceived, as they should be, as complex functional patterns of interaction between overt behavior and the environment, there would be no point in searching for them as instantaneous psychic elements within the brain or as internal products of the brain.

The comparator model is insufficient for three reasons. First, consciousness is involved in the process of comparison as well as in the output. Second, we still do not have enough neurophysiological information to match the events of consciousness, although such knowledge is growing. Third, the anatomical localisation proposed can be damaged bilaterally but consciousness will persist.

On the basis of neuropsychological evidence, it is clear that attention should be given a role in any model of consciousness. What is known about the many instances of dissociation between explicit and implicit knowledge after brain damage suggests that conscious experience might not be linked to a restricted area of the brain. Even if it were true that there is a single brain area devoted to consciousness, the subicular area would seem to be an unlikely possibility.

Perspective and reflection have each been considered in some way basic to phenomenal consciousness. Each has possible evolutionary value, though neither seems sufficient for consciousness. Consider an account of consciousness in terms of the combination of perspective and reflection, its relationship to the problem of other minds, and its capacity to inherit evolutionary explanation from its components.

In this paper I dispute Eliot Deutsch's claim [See Deutsch, Eliot (1996) Self-deception: a comparative study, in: Roger T. Ames and Wimal Dissanayake (Eds) Self and Deception: a cross-cultural enquiry (Albany, State University of New York Press), pp. 315-326] that examining self-deception from the perspective of non-Western traditions (i.e. how it is understood in those cultures) can help us to better understand the nature of the phenomenon in one's own culture. Although the claim appears to be uncontrover-sial and perhaps even (...) self-evident, I shall argue that it is fundamentally mistaken. What is important about both the claim and my critical assessment of it is not what it tells us about self-deception. I shall show that it tells us little about self-deception; that Deutsch confuses ignorance with self-deception; and that he straightforwardly equivocates on the concept. Instead, what is interesting is what Deutsch's treatment of self-deception in comparative perspective can tell us about comparative philosophy. The significance of what follows in this paper is less about self-deception than it is about comparative philosophy. (shrink)

In this commentary, I point out some weaknesses in Gray's target article and, in the light of that discussion, I attempt to delineate the kinds of problem a cognitive neuroscience of consciousness faces on its way to a scientific understanding of subjective experience.

Gray's comparator model fails to provide an adequate explanation of consciousness for two reasons. First, it is based on a narrow definition of consciousness that excludes basic phenomenology and active functions of consciousness. Second, match/mismatch decisions can be made without producing an experience of consciousness. The model thus violates the sufficiency criterion.