Sub-compartments within orientation columns of primary visual cortex: a proposal for a contour building architecture
Ming Li1; Xue-Mei Song2,4; Tao Xu3; Anna Wang Roe4; Dewen Hu1; Chao-Yi Li1,2,3
2017-07
会议名称2017年第二届曲阜视觉科学会议
会议日期2017.2
会议地点曲阜
摘要

PURPOSE: In the mammalian visual system, early stages of visual form perception begin with orientation selective neurons in primary visual cortex (V1). In many species (including humans, monkeys, tree shrews, cats, and ferrets), these neurons are organized in beautifully arrayed orientation columns, which shift in orientation preference across V1 and are highlighted by orientation pinwheels. However, to date, the relationship of orientation architecture to the encoding of elemental aspects of visual contours is still unknown.
METHODS: Using a novel highly accurate method of targeting electrode position, combining with optical image and single-unit recording, we report for the first time the presence of three functionally distinct zones within single orientation domains.
RESULTS: We found evidence for three concentric sub-regions centered on the orientation-pinwheel. The central-most region contains neurons with small receptive fields and strong suppressive surrounds, while the outermost region contains neurons with larger receptive fields and weak suppressive surrounds.
CONCLUSIONS: We suggest that these zones subseries computation of distinct aspects of visual contours (linear orientation, local curvature, and contour singularities). The orientation domain thus embodies a three stage visual contour processor in V1.

关键词primary visual cortex(V1) orientation column contour building sub-compartments
学科领域视觉神经科学
语种中文
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/22050
专题心理所主办学术会议_2017年第二届曲阜视觉科学会议_会议摘要
通讯作者Anna Wang Roe; Chao-Yi Li
作者单位1.The College of Mechatronics and Automation, National University of Defense Technology
2.Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences
3.Key Laboratory for Neuroinformation of Ministry of Education, University of Electronic Science and Technology of China
4.Zhejiang University Interdisciplinary Institute of Neuroscience and Technology (ZIINT)
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GB/T 7714
Ming Li,Xue-Mei Song,Tao Xu,et al. Sub-compartments within orientation columns of primary visual cortex: a proposal for a contour building architecture[C],2017.
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