What makes a cell face selective? The importance of contrast.
What makes a cell face selective? The importance of contrast.
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DOI：
10.1016/j.neuron.2012.03.024
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发表时间：
2012-05-10
期刊：
影响因子：
16.2
通讯作者：
Tsao DY
中科院分区：
文献类型：
--
作者：
Ohayon S;Freiwald WA;Tsao DY
Faces are robustly detected by computer vision algorithms that search for characteristic coarse contrast features. Here, we investigated whether face-selective cells in the primate brain exploit contrast features as well. We recorded from face-selective neurons in macaque inferotemporal cortex, while presenting a face-like collage of regions whose luminances were changed randomly. Modulating contrast combinations between regions induced activity changes ranging from no response to a response greater than that to a real face in 50% of cells. The critical stimulus factor determining response magnitude was contrast polarity, e.g., nose region brighter than left eye. Contrast polarity preferences were consistent across cells, suggesting a common computational strategy across the population, and matched features used by computer vision algorithms for face detection. Furthermore, most cells were tuned both for contrast polarity and for the geometry of facial features, suggesting cells encode information useful both for detection and recognition.
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DOI：
10.1126/science.1194908
发表时间：
2010-11-05
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Freiwald WA;Tsao DY
通讯作者：
Tsao DY
影响因子：
25
作者：
Freiwald, Winrich A.;Tsao, Doris Y.;Livingstone, Margaret S.
通讯作者：
Livingstone, Margaret S.
影响因子：
56.9
作者：
HARMON, LD;JULESZ, B
通讯作者：
JULESZ, B
DOI：
10.1109/34.254061
发表时间：
1993-10-01
影响因子：
23.6
作者：
BRUNELLI, R;POGGIO, T
通讯作者：
POGGIO, T
影响因子：
1.8
作者：
Loffler, G;Gordon, GE;Wilson, HR
通讯作者：
Wilson, HR