Exorcizing the Ghost of Mental Imagery

Harnad, Stevan (1993) Exorcizing the Ghost of Mental Imagery. [Journal (Paginated)]

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To summarize, if we speak only about the information available in an object or a data structure -- and forget for now that we have mental lives at all, concerning ourselves only with our performance capacities -- it seems clear that array representations are merely another form of symbolic information. Are they likely to be the only form of internal representation, or the main one, that explains our visual and spatial capacities? I think not; I think tasks like Shepard & Cooper's (1982) ``mental rotation'' may be better accounted for by internal representations that do not turn transducer projections into numbers at all, but preserve them in analog form, one that is physically invertible by an analog transformation that is one-to-one with the transducer projection (to some subsensory and subcognitive level of neural granularity). In other words, I agree with Glasgow that it is a matter of preserving information in the internal representation, but I am not persuaded that arrays are the form the preserved information takes (see Camberlain & Barlow 1982; Jeannerod 1994).

Item Type:Journal (Paginated)
Keywords:arrays, mental images, symbols
Subjects:Psychology > Perceptual Cognitive Psychology
ID Code:1590
Deposited By: Harnad, Stevan
Deposited On:18 Jun 2001
Last Modified:11 Mar 2011 08:54

References in Article

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CHAMBERLAIN, S.C. & BARLOW, R.B. 1982. Retinotopic organization of lateral eye input to Limulus brain. Journal of

Neurophysiology, 48: 505-520.

HARNAD, S. 1982. Consciousness: An afterthought. Cognition and Brain Theory, 5: 29 - 47.

HARNAD, S. 1987. The induction and representation of categories. In: Harnad, S. (ed.) Categorical Perception: The

Groundwork of Cognition. New York: Cambridge University Press.

HARNAD, S. 1990a. The symbol grounding problem. Physica D, 42: 335-346.

HARNAD, S. 1990b. Against computational hermeneutics, Invited commentary on Eric Dietrich's computationalism. Social

Epistemology, 4: 167-172.

HARNAD, S. 1990c. Lost in the hermeneutic hall of mirrors, Invited commentary on Michael Dyer's ``Minds, machines, Searle

and Harnad''. Journal of Experimental and Theoretical Artificial Intelligence, 2: 321 - 327.

HARNAD, S. 1991. Other bodies, Other minds: A machine incarnation of an old philosophical problem. Minds and Machines, 1:


HARNAD, S. 1992. Connecting Object to Symbol in Modeling Cognition. In: A. Clarke and R. Lutz (Eds) Connectionism in

Context Springer Verlag.

JEANNEROD, M. 1994. The representing brain: neural correlates of motor intention and imagery. Behavioral and Brain

Sciences, 17(2) in press.

SEARLE, J. R. 1980. Minds, brains and programs. Behavioral and Brain Sciences, 3: 417-457.

SHEPARD, R. N. and L. A. COOPER. 1982. Mental images and their transformations. MIT Press, Cambridge, MA.


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