TY - JOUR
T1 - A Motion Direction Map in Macaque V2
AU - Lu, Haidong D.
AU - Chen, Gang
AU - Tanigawa, Hisashi
AU - Roe, Anna W.
N1 - Funding Information:
We thank Dr. Robert Friedman for technical assistance and Lisa Chu for surgical assistance. This work was supported by NIH grant EY11744 to A.W.R., Vanderbilt Vision Research Center, and Vanderbilt University Center for Integrative & Cognitive Neuroscience.
PY - 2010/12/9
Y1 - 2010/12/9
N2 - 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 V1. 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. Video Abstract:
AB - 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 V1. 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. Video Abstract:
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U2 - 10.1016/j.neuron.2010.11.020
DO - 10.1016/j.neuron.2010.11.020
M3 - Article
C2 - 21145011
AN - SCOPUS:78649926923
SN - 0896-6273
VL - 68
SP - 1002
EP - 1013
JO - Neuron
JF - Neuron
IS - 5
ER -