Laminar dependent orientation selectivity and its dynamics in macaque V1
Tian Wang; Guanzhong Yang; Yi Yang; Yang Li; Weifeng Dai; Dajun Xing
Conference Name2017年第二届曲阜视觉科学会议
Conference Date2017.7.1
Conference Place曲阜

PURPOSE: Orientation selective is an emergent property of primary visual cortex (V1). Previous studies have proposed that broadly-tuned suppression or response nonlinearity (power law) may play important roles for sharpening of cortical selectivity. We ask how the two mechanisms collaborate to sharpen the orientation selectivity in V1.
METHODS: we used a linear array electrode to record neural response simultaneously from multiple cortical depths in V1 of awake macaque monkeys. Stimuli with different orientations flashed 20ms each frame. Dynamic responses was calculated with the reverse correlation method.
RESULTS & CONCLUSIONS:We found that dynamic responses to stimulus orientations are different cross cortical layers. Based on the response dynamics, we estimate the broadly-tuned suppression and response nonlinearity at different layers, we found that suppression is stronger in input layers, while output layers have largest nonlinearity and highest selectivity. Our results suggest that orientation selectivity is sharpened through multiple stages in V1.

Keywordlaminar orientation selectivity dynamics
Document Type会议论文
AffiliationState Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University
Recommended Citation
GB/T 7714
Tian Wang,Guanzhong Yang,Yi Yang,et al. Laminar dependent orientation selectivity and its dynamics in macaque V1[C],2017.
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