Visual response characteristics of neurons in the second visual area of marmosets  

作　　者：Yin Yang Ke Chen Marcello G.P.Rosa Hsin-Hao Yu Li-Rong Kuang Jie Yang 

机构地区：[1]Department of Ophthalmology,Sichuan Academy of Medical Sciences&Sichuan Provincial People’s Hospital,Chengdu,Sichuan Province,China [2]College of Medicine,University of Electronic Science and Technology of China,Chengdu,Sichuan Province,China [3]School of Life Science and Technology,University of Electronic Science and Technology of China,Chengdu,Sichuan Province,China [4]Department of Physiology,Monash University,Melbourne,VIC,Australia [5]Chengdu Medical College,Chengdu,Sichuan Province,China [6]Department of Neurology,Sichuan Academy of Medical Sciences&Sichuan Provincial People’s Hospital,Chengdu,Sichuan Province,China

出　　处：《Neural Regeneration Research》2021年第9期1871-1876,共6页中国神经再生研究（英文版）

基　　金：supported by travel grants from Monash University and the University of Sichuan(to YY);Research Grants from the Australian Research Council(No.DP0451206)(to MGPR);National Health and Medical Research Council(No.384115)(to MGPR)。

摘　　要：The physiological characteristics of the marmoset second visual area(V2) are poorly understood compared with those of the primary visual area(V1). In this study, we observed the physiological response characteristics of V2 neurons in four healthy adult marmosets using intracortical tungsten microelectrodes. We recorded 110 neurons in area V2, with receptive fields located between 8° and 15° eccentricity. Most(88.2%) of these neurons were orientation selective, with half-bandwidths typically ranging between 10° and 30°. A significant proportion of neurons(28.2%) with direction selectivity had a direction index greater than 0.5. The vast majority of V2 neurons had separable spatial frequency and temporal frequency curves and, according to this criterion, they were not speed selective. The basic functional response characteristics of neurons in area V2 resemble those found in area V1. Our findings show that area V2 together with V1 are important in primate visual processing, especially in locating objects in space and in detecting an object's direction of motion. The methods used in this study were approved by the Monash University Animal Ethics Committee, Australia(MARP 2009-2011) in 2009.

关 键 词：direction selectivity electrophysiological recording MARMOSET orientation selectivity receptive field second visual area spatial frequency speed selectivity temporal frequency 

分 类 号：Q429.2[生物学—神经生物学]