Mechanisms of modal and amodal interpolation
Mechanisms of modal and amodal interpolation
P. J. Kellman and T. F. Shipley (1992) and P. J. Kellman, P. Garrigan, and T. F. Shipley (2005) suggested that completion of partly occluded objects and illusory objects involve the same or similar mechanisms at critical stages of contour interpolation. B. L. Anderson, M. Singh, and R. W. Fleming (2002) and B. L. Anderson (2007) presented a number of arguments against this view. The author analyzes 3 of these arguments, as well as B. L. Anderson's ecological justification for believing that these mechanisms must be very different, and suggests that their conclusions are unwarranted. The author also outlines a model consistent with the identity hypothesis and with recent physiological evidence, including a quantitative proposal for contour interpolation strength. The model suggests that V1 and V2 receive from higher visual areas feedback that modulates their responses to stimuli eliciting modal completion, amodal completion, and collinear contour facilitation. The model qualitatively explains the unstable percepts evoked by various recently devised stimuli
illusory contours, amodal completion, surface perception, contour facilitation, visual perception
455-468
Albert, Marc K.
8b8994c1-ffc0-4f5e-93d7-45ad7782b8ca
April 2007
Albert, Marc K.
8b8994c1-ffc0-4f5e-93d7-45ad7782b8ca
Abstract
P. J. Kellman and T. F. Shipley (1992) and P. J. Kellman, P. Garrigan, and T. F. Shipley (2005) suggested that completion of partly occluded objects and illusory objects involve the same or similar mechanisms at critical stages of contour interpolation. B. L. Anderson, M. Singh, and R. W. Fleming (2002) and B. L. Anderson (2007) presented a number of arguments against this view. The author analyzes 3 of these arguments, as well as B. L. Anderson's ecological justification for believing that these mechanisms must be very different, and suggests that their conclusions are unwarranted. The author also outlines a model consistent with the identity hypothesis and with recent physiological evidence, including a quantitative proposal for contour interpolation strength. The model suggests that V1 and V2 receive from higher visual areas feedback that modulates their responses to stimuli eliciting modal completion, amodal completion, and collinear contour facilitation. The model qualitatively explains the unstable percepts evoked by various recently devised stimuli
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Submitted date: January 2007
Published date: April 2007
Keywords:
illusory contours, amodal completion, surface perception, contour facilitation, visual perception
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Local EPrints ID: 44650
URI: http://eprints.soton.ac.uk/id/eprint/44650
ISSN: 0033-295X
PURE UUID: bb8058b5-f851-4e5a-8ab9-f62ea65687b3
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Date deposited: 07 Mar 2007
Last modified: 15 Mar 2024 09:06
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Author:
Marc K. Albert
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