The spatial scale of perceptual memory in ambiguous figure perception
Knapen, Tomas, Brascamp, Jan, Adams, Wendy J. and Graf, Erich W. (2009) The spatial scale of perceptual memory in ambiguous figure perception. Journal of Vision, 9, (13), 1-12. (doi:10.1167/9.13.16).
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Ambiguous visual stimuli highlight the constructive nature of vision: perception alternates between two plausible interpretations of unchanging input. However, when a previously viewed ambiguous stimulus reappears, its earlier perception almost entirely determines the new interpretation; memory disambiguates the input. Here, we investigate the spatial properties of this perceptual memory, taking into account strong anisotropies in percept preference across the visual field. Countering previous findings, we show that perceptual memory is not confined to the location in which it was instilled. Rather, it spreads to noncontiguous regions of the visual field, falling off at larger distances. Furthermore, this spread of perceptual memory takes place in a frame of reference that is tied to the surface of the retina. These results place the neural locus of perceptual memory in retinotopically organized sensory cortical areas, with implications for the wider function of perceptual memory in facilitating stable vision in natural, dynamic environments
|Subjects:||Q Science > Q Science (General)
B Philosophy. Psychology. Religion > BF Psychology
|Divisions:||University Structure - Pre August 2011 > School of Psychology > Division of Cognition
|Date Deposited:||13 Jan 2010|
|Last Modified:||06 Aug 2015 02:56|
Exploring mechanisms for the resolution of ambiguity in visual scenes
Funded by: BBSRC (BB/E012698/1)
Led by: Erich William Graf
1 August 2007 to 31 July 2009
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