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Title: Dynamic modification of cortical orientation tuning mediated by recurrent connections
Author: Felsen, G ; Shen, YS ; null(姚海珊) ; Spor, G ; Li, CY ; Dan, Y
Source: NEURON
Issued Date: 2002
Volume: 36, Issue:5, Pages:945-954
Keyword: PRIMARY VISUAL-CORTEX ; CLASSICAL RECEPTIVE-FIELD ; CAT STRIATE CORTEX ; UNDERLYING CONTRAST ADAPTATION ; SPATIAL-FREQUENCY ; SYNAPTIC DEPRESSION ; RAPID ADAPTATION ; SINGLE UNITS ; GAIN-CONTROL ; IN-VIVO
Subject: Neurosciences & Neurology
Corresponding Author: Dan, Y (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, Div Neurobiol, Berkeley, CA 94720 USA,ydan@uclink4.berkeley.edu
English Abstract: Receptive field properties of visual cortical neurons depend on the spatiotemporal context within which the stimuli are presented. We have examined the temporal context dependence of cortical orientation tuning using dynamic visual stimuli with rapidly changing orientations. We found that tuning to the orientation of the test stimulus depended on a briefly presented preceding stimulus, with the preferred orientation shifting away from the preceding orientation. Analyses of the spatial-phase dependence of the shift showed that the effect cannot be explained by purely feedforward mechanisms, but can be accounted for by activity-dependent changes in the recurrent interactions between different orientation columns. Thus, short-term plasticity of the intracortical circuit can mediate dynamic modification of orientation tuning, which may be important for efficient visual coding.
Indexed Type: sci
Language: 英语
Content Type: 期刊论文
URI: http://ir.sibs.ac.cn/handle/331001/2037
Appears in Collections:神经所(总)_期刊论文
视觉神经生理学研究组_期刊论文

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Recommended Citation:
Felsen, G; Shen, YS; Yao, HS; Spor, G; Li, CY; Dan, Y.Dynamic modification of cortical orientation tuning mediated by recurrent connections,NEURON,2002,36(5):945-954
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