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Perception :: Special Topics

3.8a Illusion and Hallucination

See also: . , 1.5b. Representationalism, 2.4g. Intentional Objects, 3.1a. Sense-Datum Theories, 3.1c. Intentionalism, 3.1f. Disjunctivism, 3.5c. Construction and Inference in Perception, 8.5c. Schizophrenia, 8.6d. Drugs and Consciousness.

Armstrong, David M. (1955). Illusions of sense. Australasian Journal of Philosophy 33 (August):88-106.   (Cited by 2 | Google | More links | Edit)
Ben-Zeev, Aaron (1984). What is a perceptual mistake? Journal of Mind and Behavior 5:261-278.   (Cited by 2 | Google | Edit)
Binet, Alfred (1884). Visual hallucinations in hypnotism. Mind 9 (35):413-415.   (Google | More links | Edit)
Bokil, S. V. (2005). The argument from illusion: All appearance and no reality. Indian Philosophical Quarterly 32 (1-2):147-158.   (Google | Edit)
Bretzel, Philip (1974). Cornman, sensa, and the argument from hallucination. Philosophical Studies 26 (5-6).   (Google | More links | Edit)
Bretzevonl, Philip (1974). Cornman, sensa, and the argument from hallucination. Philosophical Studies 26 (December):443-445.   (Google | Edit)
Brewer, Bill (forthcoming). How to account for illusion. In Fiona Macpherson & Adrian Haddock (eds.), Disjunctivism: Perception, Action, Knowledge. Oxford University Press.   (Cited by 2 | Google | Edit)
Abstract: The question how to account for illusion has had a prominent role in shaping theories of perception throughout the history of philosophy. Prevailing philosophical wisdom today has it that phenomena of illusion force us to choose between the following two options. First, reject altogether the early modern empiricist idea that the core subjective character of perceptual experience is to be given simply by citing the object presented in that experience. Instead we must characterize perceptual experience entirely in terms of its representational content. Second, retain the early modern idea that the core subjective character of experience is simply constituted by the identity of its direct objects, but admit that these must be mind-dependent entities, distinct from the mind-independent physical objects we all know and love. I argue here that the early modern empiricists had an indispensable insight. The idea that the core subjective character of perceptual experience is to be given simply by citing the object presented in that experience is more fundamental than any appeal to perceptual content, and can account for illusion, and indeed hallucination, without resorting to the problematic postulation of any mind-dependent such objects
Brown, Jason W. (2004). The illusory and the real. Mind and Matter 2 (1):37-59.   (Cited by 2 | Google | More links | Edit)
Abstract: This contribution explores the psychological basis of illusion and the feeling of what is real in relation to a process theory (microgenesis) of mind/brain states. The varieties of illusion and the alterations in the feeling of realness are illustrated in cases of clinical pathology, as well as in everyday life. The basis of illusion does not rest in a comparison of appearance to reality nor in the relation of image to object, since these are antecedent and consequent phases in the same mental state. The study of pathological illusions and hallucinations shows that the feeling of realness in an object depends on its coherence within and across perceptual modalities. Illusion is shown to be not the taking of the phenomenal for the real, but the overlooking of the real in the phenomenal, since all things exist, i.e. are real, as categories of intrinsic relations in the unique mode of their conception. Finally, the implications of the account are discussed in relation to moral conduct, self-realization, acceptance, and the will to enjoy a world of 'brain-born' mental phenomena
Dancy, Jonathan (1995). Arguments from illusion. Philosophical Quarterly 45 (181):421-438.   (Cited by 17 | Google | More links | Edit)
Dunn, Jeffrey (forthcoming). The obscure act of perception. Philosophical Studies.   (Google | More links | Edit)
Abstract: Finding disjunctivist versions of direct realism unexplanatory, Mark Johnston [(2004). Philosophical Studies, 120, 113–183] offers a non-disjunctive version of direct realism in its place and gives a defense of this view from the problem of hallucination. I will attempt to clarify the view that he presents and then argue that, once clarified, it either does not escape the problem of hallucination or does not look much like direct realism
Firth, Roderick (1964). Austin and the argument from illusion. Philosophical Review 73 (July):372-382.   (Cited by 1 | Google | More links | Edit)
Furlong, E. J. (1954). Memory and the argument from illusion. Proceedings of the Aristotelian Society 54:131-144.   (Google | Edit)
Greenberg, A. R. (1977). Defending the argument from illusion. Personalist 58 (April):124-130.   (Google | Edit)
Gunther, York H. (2001). Content, illusion, partition. Philosophical Studies 102 (2):185-202.   (Cited by 3 | Google | More links | Edit)
Abstract: Philosophers of mind have recently sought to establish a theoret- ical use for nonconceptual content. Although there is disagreement about what nonconceptual content is supposed to be, this much is clear. A state with nonconceptual content is mental. Hence, while one may deny that refrigerators and messy rooms have conceptual capacities, their states, as physical and not mental, do not have nonconceptual content. A state with nonconceptual content is also intentional, which is to say that it represents a feature of the world for a subject. It may be tempting to think of qualitative states as having nonconceptual content since they can be experienced by indi- viduals independently of their possession of the requisite concepts, e.g. someone could experience pains, itches or tingles without possessing the concept pain, itch or tingle. But on such a view, one would have to assume that qualitative states are representational since mental states cannot be candidates for nonconceptuality unless they have intentional properties.2
Gurney, Edmund (1885). Hallucinations. Mind 10 (38):161-199.   (Cited by 1 | Google | More links | Edit)
Gurney, Edmund (1885). Supplementary note on hallucinations. Mind 10 (38):316-317.   (Google | More links | Edit)
Haymond, William S. (1969). The argument from illusion. Modern Schoolman 46 (January):109-134.   (Cited by 1 | Google | Edit)
Hilbert, David R. (2004). Hallucination, sense-data and direct realism. Philosophical Studies 120 (1-3):185-191.   (Cited by 1 | Google | More links | Edit)
Hutchings, P. A. (1956). What is a proper usage of illusion? Australasian Journal of Philosophy 34 (May):38-42.   (Google | More links | Edit)
Johnston, Mark (2004). The obscure object of hallucination. Philosophical Studies 120 (1-3):113-83.   (Cited by 31 | Google | More links | Edit)
Kiteley, Murray J. (1972). The argument from illusion: Objects and objections. Mind 81 (April):191-207.   (Cited by 2 | Google | More links | Edit)
Krishna, Daya (2003). Illusion, hallucination and the problem of truth. Journal of Indian Council of Philosophical Research 20 (4):129-146.   (Google | Edit)
McAlister, Linda Lopez (1978). Oakes' illusion. Southern Journal of Philosophy 16:275-279.   (Google | Edit)
McKee, P. L. (1973). A. J. Ayer on the argument from illusion. Canadian Journal of Philosophy 3 (December):275-280.   (Google | Edit)
Mckee, P. L. (1976). A note on sensory error. Personalist 57:51-54.   (Google | Edit)
Natanson, Maurice (1985). Illusion and irreality: The enlargement of experience. The Monist 68 (October):425-438.   (Google | Edit)
Ninio, Jacques & Philip, Franklin (2001). The Science of Illusions. Ithaca: Cornell University Press.   (Cited by 15 | Google | More links | Edit)
Oakes, Robert A. (1977). An illusion about phenomenalism. Southern Journal of Philosophy 15:201-206.   (Google | Edit)
Oakes, Robert A. (1970). Science, error, and dualism. Philosophy and Phenomenological Research 30 (March):450-452.   (Google | More links | Edit)
Olafson, Frederick A. (1953). A note on perceptual illusion. Journal of Philosophy 50 (April):274-277.   (Google | More links | Edit)
Phillips, Ian (online). Illusion and content.   (Google | Edit)
Abstract: How should the Na¨ıve Realist who eschews representational percep- tual content account for illusions? Bill Brewer has recently proposed that illusions should be treated solely in terms of post-experiential misjudgement
Prasad, B. Sambasiva (2005). The argument from illusion: A response to dr. K. Srinivas. Indian Philosophical Quarterly 32 (1-2):141-146.   (Google | Edit)
Reynolds, Robert I. (1988). A psychological definition of illusion. Philosophical Psychology 1:217-223.   (Google | Edit)
Romdenh-Romluc, Komarine (2007). Merleau-ponty's account of hallucination. European Journal of Philosophy.   (Google | Edit)
Sen, Madhucchanda (1992). Perception and illusion. Indian Philosophical Quarterly 19 (October):1-16.   (Google | Edit)
Smith, David Woodruff (1983). Is this a dagger I see before me? Synthese 54 (January):95-114.   (Cited by 3 | Google | More links | Edit)
Thompson, Brad J. (online). Representationalism and the argument from hallucination.   (Cited by 3 | Google | Edit)
Abstract: Phenomenal character is determined by representational content, which both hallucinatory and veridical experiences can share. But in the case of veridical experience, unlike hallucination, the external objects of experience literally have the properties one is aware of in experience. The representationalist can accept the common factor assumption without having to introduce sensory intermediaries between the mind and the world, thus securing a form of direct realism
Ushenko, Andrew P. (1945). A note on the argument from illusion. Mind 54 (April):159-160.   (Google | More links | Edit)
Wait, Eldon C. (1995). A phenomenological rejection of the empiricist argument from illusions. South African Journal of Philosophy 14 (3):83-89.   (Cited by 1 | Google | Edit)
Wait, Eldon C. (1997). Dissipating illusions. Human Studies 20 (2):221-242.   (Cited by 2 | Google | More links | Edit)
Abstract: Perhaps the greatest challenge to an existential phenomenological account of perception is that posed by the argument from illusions. Recent developments in research on the behaviour of subjects suffering from illusions together with some seminal ideas found in Merleau-Ponty''s writings enable us to develop and corroborate an account of the phenomenon of illusions, one, which unlike the empiricist account, does not undermine our conviction that in perception we reach the things themselves. The traditional argument from illusions derives its force from an uncritical assumption that the process of experience takes place in time conceived as an infinite series of distinct moments. Once this assumption has been bracketed we are able to recognise the paradoxical truth that in the disillusion something can become that which it has always been and can cease to be that which it has never been. Furthermore, through a reflection on our experience of others overcoming their illusions, and on psychological evidence, we are able to show that there is nothing to suggest that this description of the disillusion is a description of a private or subjective event
White, Alan R. (1970). Seeing what is not there. Proceedings of the Aristotelian Society 70:61-74.   (Google | Edit)
Yost, R. M. (1962). Professor price on perspectival illusion. Philosophical Review 71 (April):202-217.   (Google | Edit)

3.8b Transparency

See also: 1.5b. Representationalism, 3.1a. Sense-Datum Theories, 3.1c. Intentionalism, 3.1e. Naive and Direct Realism, 3.2b. Direct and Indirect Perception.

Crane, Tim (2002). Introspection, intentionality, and the transparency of experience. Philosophical Topics 28:49-67.   (Cited by 2 | Google | Edit)
Gennaro, Rocco J. (2007). Representationalism, peripheral awareness, and the transparency of experience. Philosophical Studies.   (Google | More links | Edit)
Abstract: It is an interesting and somewhat curious fact that two claims based on phenomenological observation are at the heart of contemporary defenses of some forms of representationalism. Representationalism is, generally, the view that pheneomenal consciousness can be explained in terms of the intentional features of experience. More precisely, a representationalist will typically hold that the phenomenal properties of experience (that is, the “qualia” or “phenomenal character” or “what it is like of experience”) can be explained in terms of the experiences’ representational properties. The first phenomenological assertion is that, in addition to our frequent focused (or attentional) awareness of outer objects, we also have peripheral (or inattentional) conscious experience at the “edges” of consciousness. It is often said that some kind of peripheral conscious awareness accompanies our focal consciousness. Indeed, it seems reasonable to suppose that conscious awareness is broader than those aspects of conscious experience to which one is paying conscious attention. The second claim is that there is what has been called the “transparency of experience;” namely, that when we try to introspect, say, our visual experiences we “look through them” only to find the outer objects of those experiences. I say that it is a ‘curious fact’ because many representationalists are motivated by a desire to reduce consciousness to intentionality without any reference to phenomenal terms, or at least to render consciousness explicable in naturalistic terms. This desire is often accompanied by a decided third-person
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approach to consciousness and sometimes even a disdain for introspective or phenomenological methods
Hardin, Larry (2006). Perceptual transparency. Dialectica 60 (3):341-345.   (Google | Edit)
Kind, Amy (2003). What's so transparent about transparency? Philosophical Studies 115 (3):225-244.   (Google | More links | Edit)
Abstract: Intuitions about the transparency of experience have recently begun to play a key role in the debate about qualia. Specifically, such intuitions have been used by representationalists to support their view that the phenomenal character of our experience can be wholly explained in terms of its intentional content.[i] But what exactly does it mean to say that experience is transparent? In my view, recent discussions of transparency leave matters considerably murkier than one would like. As I will suggest, there is reason to believe that experience is not transparent in the way that representationalism requires. Although there is a sense in which experience can be said to be transparent, transparency in this sense does not give us any particular motivation for representationalism—or at least, not the pure or strong representationalism that it is usually invoked to support
Kind, Amy (2003). What's so transparent about transparency? (Representationalism, ambiguities). Philosophical Studies 115 (3):225-244.   (Google | Edit)
Leeds, Stephen (2002). Perception, transparency, and the language of thought. Noûs 36 (1):104-129.   (Cited by 8 | Google | More links | Edit)
Livet, Pierre (2005). What is transparency? Psyche 11 (5).   (Google | Edit)
Abstract: Opacity, in Metzinger’s sense, is access to processed information _as_ processed, while transparency is only access to the _content _of our phenomenal states. I suspect that transparency conflates different notions. First I show that every conscious experience has a “transparent” core (involving intentionality, directedness and assumption of existence, insensitivity to some unconscious process). Anyway, to be sensitive to earlier processing steps does not imply to take the representation “as modeled by our simulator”. There are other ways of being sensitive to this processing experience: experience of gaps in perceptive synthesis, experience of incompleteness, queerness of experience, phenomenal incoherence, searching consciousness. Many of them implies only to put in abeyance incoherence or incompleteness (to be laterally aware of a conflict without dealing with it), or even to put this abeyance into abeyance (not to take into account the absence of solution). But if the conflict becomes serious, we revise our assumption, and this requires the assumption that the conflict is about existing things. The self has a peculiar property here. Even when I revise one aspect of my self, I have to presuppose a self, in the sense that I put in abeyance other revisions of this presupposed self. Self is not a simulation, even if we have only this peculiar access to it.
Martin, Michael G. F. (2002). The transparency of experience. Mind and Language 4 (4):376-425.   (Cited by 45 | Google | More links | Edit)
Raymont, Paul (online). Some experienced qualities belong to the experience.   (Google | Edit)
Abstract: In this paper, a criticism of representationalist views of consciousness is developed. These views are often supported by an appeal to a transparency thesis about conscious states, according to which an experience does not itself possess the qualities of which it makes one conscious. The experience makes one conscious of these qualities by representing them, not by instantiating them. Against this, it is argued that some of the properties of which one is conscious are had by the conscious state itself. Only by adopting this view can we account for certain perceptual incompatibilities, such as the fact that one cannot see a stick as being both bent and not bent. This sort of experience is impossible because it would require that an experience have, and not just represent, incompatible features
Schroer, Robert (2007). Reticence of phenomenal character: A spatial interpretation of transparency. Australasian Journal of Philosophy 85 (3):393.   (Google | More links | Edit)
Abstract: It is often claimed that the phenomenal character of visual experience is 'transparent' in that the phenomenal features of visual experience do not seem 'mental'. It is then claimed that this transparency speaks in favour of some theories of experience while speaking against others. In this paper, I advance both a negative and a positive thesis about transparency. My negative thesis is that visual phenomenal character is reticent in that it does not reveal whether it is mental or non-mental in nature. This, in turn, means that, by itself, transparency does not speak in favour of (and against) the theories it is often thought to speak in favour of (and against). My positive thesis is that the phenomenon referred to as the 'transparency' of visual phenomenal character is best characterized in spatial, not mental, terms
Siewert, Charles (2004). Is experience transparent? Philosophical Studies 117 (1-2):15-41.   (Cited by 13 | Google | More links | Edit)
Smith, A. D. (forthcoming). Translucent experiences. Philosophical Studies.   (Google | More links | Edit)
Abstract: This paper considers the claim that perceptual experience is “transparent”, in the sense that nothing other than the apparent public objects of perception are available to introspection by the subject of such experience. I revive and strengthen the objection that blurred vision constitutes an insuperable objection to the claim, and counter recent responses to the general objection. Finally the bearing of this issue on representationalist accounts of the mind is considered
Smith, Renée (2005). The transparency of qualia and the nature of introspection. Philosophical Writings 29:21-44.   (Google | Edit)
Stoljar, Daniel (2004). The argument from diaphanousness. In M. Escurdia, Robert J. Stainton & Christopher D. Viger (eds.), Language, Mind and World: Special Issue of the Canadian Journal of Philosophy.   (Cited by 13 | Google | Edit)
Tye, Michael (2002). Representationalism and the transparency of experience. Noûs 36 (1):137-51.   (Cited by 21 | Google | More links | Edit)
Abstract: Representationalism is a thesis about the phenomenal character of experiences, about their immediate subjective ‘feel’.1 At a minimum, the thesis is one of supervenience: necessarily, experiences that are alike in their representational contents are alike in their phenomenal character. So understood, the thesis is silent on the nature of phenomenal character. Strong or pure representationalism goes further. It aims to tell us what phenomenal character is. According to the theory developed in Tye 1995, phenomenal character is one and the same as representational content that meets certain further conditions. One very important motivation for this theory is the so-called ? transparency of experience.? The purpose of this paper is to elucidate the appeal to transparency more carefully than has been done hithertofore, to make some remarks about the introspective awareness of experience in light of this appeal, and to consider one problem case for transparency at some length, that of blurry vision. Along the way, I shall also address some of the remarks Stephen Leeds makes in his essay on transparency
Webster, W. R. (2003). Revelation and transparency in colour vision refuted: A case of mind/brain identity and another bridge over the explanatory gap. Synthese 133 (3):419-39.   (Google | Edit)
Williford, Kenneth (2004). Moore, the diaphanousness of consciousness, and physicalism. Metaphysica 5 (2):133-50.   (Google | Edit)
Williford, Kenneth (ms). The logic of phenomenal transparency.   (Google | More links | Edit)
Wright, Wayne (online). Transparency and aspects.   (Google | Edit)
Abstract: Strong Representationalism (SR) claims that the phenomenal character of experience is a certain kind of representational content. Furthermore, SR theorists often maintain that the phenomenal qualities of experience just are properties of the objects of experience, represented in experience.1 Another claim held by SR theorists, often cited as a reason for embracing their view, is that experience is transparent. Transparency is the phenomenon of introspection of your experience revealing nothing but the objects, properties, and relations that your experience is an experience of. In this note, I will raise a problem for SR based on its apparent difficulty in accounting for representation under an aspect at the level of phenomenal appearances. I will then discuss and briefly criticize Michael Tye’s proposed response to this sort of concern. I conclude by offering my own reply to the problem. What follows focuses on pain experience, but there is no barrier to extending these comments to certain other forms of experience, both sensory and perceptual

3.8c The Given

See also: 1.7a. Qualia, General, 1.7c. Eliminativism about Qualia, 3.1a. Sense-Datum Theories, 3.3a. Conceptual and Nonconceptual Content, 3.5a. Modularity and Cognitive Penetrability, 3.5c. Construction and Inference in Perception, 3.5f. Gestalt Theory, 3.6b. Perception and Knowledge, 3.7. Perceptual Qualities, 3.8f. Sensation and Perception.

Alston, William P. (2002). Sellars and the myth of the given. Philosophy and Phenomenological Research 65 (1):69-86.   (Cited by 10 | Google | More links | Edit)
Bailey, Andrew R. (2004). The myth of the myth of the given. Manuscrito 27:321-60.   (Google | Edit)
Bonjour, Laurence (2004). C. I. Lewis on the given and its interpretation. Midwest Studies in Philosophy 28 (1):195–208.   (Cited by 1 | Google | More links | Edit)
Brandom, Robert B. (ms). The centrality of Sellars' two-ply account of observation to the arguments of Empiricism and the Philosophy of Mind.   (Cited by 1 | Google | Edit)
Echelbarger, C. G. (1981). An alleged legend. Philosophical Studies 39 (April):227-46.   (Cited by 1 | Google | More links | Edit)
Echelbarger, Charles (1974). Sellars on thinking and the myth of the given. Philosophical Studies 25 (May):231-246.   (Cited by 2 | Google | More links | Edit)
Fales, Evan (1996). A Defense of the Given. Lanham: Rowman &Amp; Littlefield.   (Cited by 16 | Google | More links | Edit)
Fodor, Jerry A. (ms). Revenge of the given.   (Cited by 2 | Google | More links | Edit)
Fodor, Jerry A. (2007). The revenge of the given. In Brian P. McLaughlin & Jonathan D. Cohen (eds.), Contemporary Debates in Philosophy of Mind. Blackwell.   (Google | Edit)
Foltz, Bruce V. (2004). Nature's other side: The demise of nature and the phenomenology of givenness. In Rethinking Nature: Essays in Environmental Philosophy. Bloomington: Indiana University Press.   (Google | Edit)
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