Orientation selectivity in cat primary visual cortex： local and global measurement

• Published in: Neuroscience bulletin Vol. 31; no. 5; pp. 561 - 571
• Main Authors: Xu, Tao, Yan, Hong-Mei, Song, Xue-Mei, Li, Ming
• Format: Journal Article
• Language: English
• Published: Shanghai Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences 01-10-2015
• Subjects: Action Potentials; Anatomy; Anesthesiology; Animals; Biomedical and Life Sciences; Biomedicine; Cats; Female; Human Physiology; Male; Neural Inhibition; Neurology; Neurons - physiology; Neurosciences; Original; Original Article; Pain Medicine; Photic Stimulation; Visual Cortex - physiology; Visual Perception - physiology; 初级视皮层; 响应比; 定向选择; 宽度; 方位选择性; 方向选择性; 猫; 现场测量; primary visual cortex; tuning width; circular variance; cat; orientation selectivity
• ISSN: 1673-7067; 1995-8218
• DOI: 10.1007/s12264-014-1535-7

In this study,we investigated orientation selectivity in cat primary visual cortex（V1） and its relationship with various parameters.We found a strong correlation between circular variance（CV） and orthogonal-topreferred response ratio（O/P ratio）,and a moderate correlation between tuning width and O/P ratio.Moreover,the suppression far from the peak that accounted for the lower CV in cat V1 cells also contributed to the narrowing of the tuning width of cells.We also studied the dependence of orientation selectivity on the modulation ratio for each cell,which is consistent with robust entrainment of the neuronal response to the phase of the drifting grating stimulus.In conclusion,the CV（global measure） and tuning width（local measure） are significantly correlated with the modulation ratio.