DocumentCode :
3846451
Title :
The Geometry of Visual Perception: Retinotopic and Nonretinotopic Representations in the Human Visual System
Author :
Haluk Ogmen;Michael H. Herzog
Author_Institution :
Department of Electrical & Computer Engineering and Center for NeuroEngineering & Cognitive Science, University of Houston, Houston, TX, USA
Volume :
98
Issue :
3
fYear :
2010
fDate :
3/1/2010 12:00:00 AM
Firstpage :
479
Lastpage :
492
Abstract :
Geometry is closely linked to visual perception; yet, very little is known about the geometry of visual processing beyond early retinotopic organization. We present a variety of perceptual phenomena showing that a retinotopic representation is neither sufficient nor necessary to support form perception. We discuss the popular ?object files? concept as a candidate for nonretinotopic representations and, based on its shortcomings, suggest future directions for research using local manifold representations. We suggest that these manifolds are created by the emergence of dynamic reference-frames that result from motion segmentation. We also suggest that the metric of these manifolds is based on relative motion vectors.
Keywords :
"Geometry","Visual perception","Humans","Visual system","Retina","Neurons","Geometrical optics","Shape","Image edge detection","Probes"
Journal_Title :
Proceedings of the IEEE
Publisher :
ieee
ISSN :
0018-9219
Type :
jour
DOI :
10.1109/JPROC.2009.2039028
Filename :
5415620
Link To Document :
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