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A Motion Direction Map in Macaque V2
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DOI：10.1016/j.neuron.2010.11.020.png)
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In mammals, the perception of motion starts with direction-selective neurons in the visual cortex. Despite numerous studies in monkey primary and second visual cortex (V1 and V2), there has been no evidence of direction maps in these areas. In the present study, we used optical imaging methods to study the organization of motion response in macaque V1 and V2. In contrast to the findings in other mammals (e.g., cats and ferrets), we found no direction maps in macaque Vi. Robust direction maps, however, were found in V2 thick/pale stripes and avoided thin stripes. In many cases direction maps were located within thick stripes and exhibited pinwheel or linear organizations. The presence of motion maps in V2 points to a newfound prominence of V2 in motion processing, for contributing to motion perception in the dorsal pathway and/or for motion cue-dependent form perception in the ventral pathway.
Keyword:
RECEPTIVE-FIELD PROPERTIES
PRIMARY VISUAL-CORTEX
FUNCTIONAL-ORGANIZATION
AREA V2
SELECTIVE CELLS
INTRINSIC SIGNALS
STRIATE CORTEX
MONKEY
PRIMATE
COLOR
期刊
IF:
15
论文数:
1.4W
被引数:
9.9W
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