Concentric orientation summation in human form vision

被引:201
作者
Wilson, HR [1 ]
Wilkinson, F [1 ]
Asaad, W [1 ]
机构
[1] MCGILL UNIV,DEPT PSYCHOL,MONTREAL,PQ H3A 1B1,CANADA
关键词
form vision; spatial pooling; V4; glass pattern; random dots;
D O I
10.1016/S0042-6989(97)00104-1
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Psychophysical data demonstrate that orientation information in concentric, random-dot Glass patterns is summed linearly to extract a global form percept, Surprisingly, no such global pooling was found for Glass patterns with parallel structure, A simple neural model explains these results and agrees with recent V4 single unit physiology, As V4 provides the major input to IT, global concentric units may play an important role in analyzing complex images such as faces, In support of this possibility, deficits in the perception of concentric Glass patterns have recently been linked to prosopagnosia. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:2325 / 2330
页数:6
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