title: Orientation selectivity in cat primary visual cortex: local and global measurement.
abstract: 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 signifi cantly correlated with the modulation ratio.
authors.affiliation: Key Laboratory for Neuroinformation of Ministry of Education, University of Electronic Science and Technology of China, Chengdu, 610054, China.|Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Xu
authors.affiliation: Key Laboratory for Neuroinformation of Ministry of Education, University of Electronic Science and Technology of China, Chengdu, 610054, China.
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Yan
authors.affiliation: Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China. xmsong@sibs.ac.cn.
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Song
authors.affiliation: The Department of Automatic Control, College of Mechatronics and Automation, National University of Defense Technology, Changsha, 410073, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Li
mesh_terms: D000200:Action Potentials; D000818:Animals; D002415:Cats; D005260:Female; D008297:Male; D009433:Neural Inhibition; D009474:Neurons / Q000502:physiology*; D010775:Photic Stimulation; D014793:Visual Cortex / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*
keywords: cat; circular variance; orientation selectivity; primary visual cortex; tuning width