David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jack Alan Reynolds
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Behavioral and Brain Sciences 26 (4):357-408 (2003)
A serious crisis is identified in theories of neurocomputation, marked by a persistent disparity between the phenomenological or experiential account of visual perception and the neurophysiological level of description of the visual system. In particular, conventional concepts of neural processing offer no explanation for the holistic global aspects of perception identified by Gestalt theory. The problem is paradigmatic and can be traced to contemporary concepts of the functional role of the neural cell, known as the Neuron Doctrine. In the absence of an alternative neurophysiologically plausible model, I propose a perceptual modeling approach, to model the percept as experienced subjectively, rather than modeling the objective neurophysiological state of the visual system that supposedly subserves that experience. A Gestalt Bubble model is presented to demonstrate how the elusive Gestalt principles of emergence, reification, and invariance can be expressed in a quantitative model of the subjective experience of visual consciousness. That model in turn reveals a unique computational strategy underlying visual processing, which is unlike any algorithm devised by man, and certainly unlike the atomistic feed-forward model of neurocomputation offered by the Neuron Doctrine paradigm. The perceptual modeling approach reveals the primary function of perception as that of generating a fully spatial virtual-reality replica of the external world in an internal representation. The common objections to this picture-in-the-head concept of perceptual representation are shown to be ill founded. Key Words: brain-anchored; Cartesian theatre; consciousness; emergence; extrinsic constraints; filling-in; Gestalt; homunculus; indirect realism; intrinsic constraints; invariance; isomorphism; multistability; objective phenomenology; perceptual modeling; perspective; phenomenology; psychophysical parallelism; psychophysical postulate; qualia; reification; representationalism; structural coherence.
|Keywords||*Gestalt Psychology *Gestalt Therapy *Neurosciences *Visual Perception Models|
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Eric Schwitzgebel (2006). Do Things Look Flat? Philosophy and Phenomenological Research 72 (3):589-599.
Rolf Verleger & Kamila Śmigasiewicz (2015). Consciousness Wanted, Attention Found: Reasons for the Advantage of the Left Visual Field in Identifying T2 Among Rapidly Presented Series. Consciousness and Cognition 35:260-273.
Max Velmans (2007). Where Experiences Are: Dualist, Physicalist, Enactive and Reflexive Accounts of Phenomenal Consciousness. [REVIEW] Phenomenology and the Cognitive Sciences 6 (4):547-563.
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