The role of early visual cortex in visual integration: a neural model of recurrent interaction

被引:48
作者
Deco, G
Lee, TS
机构
[1] Carnegie Mellon Univ, Dept Comp Sci, Pittsburgh, PA 15213 USA
[2] Carnegie Mellon Univ, Ctr Neural Basis Cognit, Pittsburgh, PA 15213 USA
[3] Univ Pompeu Fabra Passeig, ICREA, Barcelona 09003, Spain
[4] Univ Pompeu Fabra Passeig, Dept Tecnol, Barcelona 09003, Spain
关键词
biased competition; neural model; object recognition; primate; selective attention; visual cortex; visual search;
D O I
10.1111/j.1460-9568.2004.03528.x
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
This paper presents a model on the potential functional roles of the early visual cortex in the primate visual system. Our hypothesis is that early visual areas, such as V1, are important for continual interaction among various higher order visual areas during visual processing. The interaction is mediated by recurrent connections between higher order visual areas and V1, manifested in the long-latency context-sensitive activities often observed in neurophysiological experiments, and is responsible for the re-integration of information analysed by the higher visual areas. Specifically, we considered the case of integrating 'what' and 'where' information from the ventral and dorsal streams. We found that such a cortical architecture provides simple solutions and fresh insights into the problems of attentional routing and visual search. The computational viability of this architecture was tested by simulating a large-scale neural dynamical network.
引用
收藏
页码:1089 / 1100
页数:12
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