The geometry of visual perception: Retinotopic and nonretinotopic representations in the human visual system
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 Bobject 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: Nonretinotopic perception ; object files ; reference frames ; retinotopy ; visual system ; Nonlinear Dimensionality Reduction ; Anorthoscopic Perception ; Motion Perception ; Human-Vision ; Feature Attribution ; Topological-Structure ; Orientation Signals ; Backward-Masking ; Dynamic Shape ; Integration
Record created on 2011-01-20, modified on 2016-08-09