TY - JOUR
T1 - The coordinated mapping of visual space and response features in visual cortex
AU - Yu, Hongbo
AU - Farley, Brandon J.
AU - Jin, Dezhe Z.
AU - Sur, Mriganka
N1 - Funding Information:
The authors wish to thank James Schummers, Jitendra Sharma, and Christine Waite for technical assistance; Nathan Wilson and David Lyon for comments on the manuscript; and Peter Wiesing and Beau Cronin for helpful discussions. B.J.F. was supported by a predoctoral fellowship from NSF, and D.J. was supported by HHMI. This work was supported by NIH grant EY07023 to M.S.
PY - 2005/7/21
Y1 - 2005/7/21
N2 - Whether general principles can explain the layouts of cortical maps remains unresolved. In primary visual cortex of ferret, the relationships between the maps of visual space and response features are predicted by a "dimension-reduction" model. The representation of visual space is anisotropic, with the elevation and azimuth axes having different magnification. This anisotropy is reflected in the orientation, ocular dominance, and spatial frequency domains, which are elongated such that their directions of rapid change, or high-gradient axes, are orthogonal to the high-gradient axis of the visual map. The feature maps are also strongly interdependent - their high-gradient regions avoid one another and intersect orthogonally where essential, so that overlap is minimized. Our results demonstrate a clear influence of the visual map on each feature map. In turn, the local representation of visual space is smooth, as predicted when many features are mapped within a cortical area.
AB - Whether general principles can explain the layouts of cortical maps remains unresolved. In primary visual cortex of ferret, the relationships between the maps of visual space and response features are predicted by a "dimension-reduction" model. The representation of visual space is anisotropic, with the elevation and azimuth axes having different magnification. This anisotropy is reflected in the orientation, ocular dominance, and spatial frequency domains, which are elongated such that their directions of rapid change, or high-gradient axes, are orthogonal to the high-gradient axis of the visual map. The feature maps are also strongly interdependent - their high-gradient regions avoid one another and intersect orthogonally where essential, so that overlap is minimized. Our results demonstrate a clear influence of the visual map on each feature map. In turn, the local representation of visual space is smooth, as predicted when many features are mapped within a cortical area.
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U2 - 10.1016/j.neuron.2005.06.011
DO - 10.1016/j.neuron.2005.06.011
M3 - Article
C2 - 16039568
AN - SCOPUS:22544456238
SN - 0896-6273
VL - 47
SP - 267
EP - 280
JO - Neuron
JF - Neuron
IS - 2
ER -