Processing of motion boundary orientation in macaque V2

eLife

Qianling Song¹  Jiaming Hu¹  Haidong D Lu¹  Xingya Cai¹  Heng Ma¹  Pengcheng Li¹ 

[1] State Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China;

关键词: motion boundary;    orientation discrimination;    V2;    macaque monkey;    electrode array recording;    Rhesus macaque;   

DOI  :  10.7554/eLife.61317

来源: eLife Sciences Publications, Ltd

【 摘 要 】

Human and nonhuman primates are good at identifying an object based on its motion, a task that is believed to be carried out by the ventral visual pathway. However, the neural mechanisms underlying such ability remains unclear. We trained macaque monkeys to do orientation discrimination for motion boundaries (MBs) and recorded neuronal response in area V2 with microelectrode arrays. We found 10.9% of V2 neurons exhibited robust orientation selectivity to MBs, and their responses correlated with monkeys’ orientation-discrimination performances. Furthermore, the responses of V2 direction-selective neurons recorded at the same time showed correlated activity with MB neurons for particular MB stimuli, suggesting that these motion-sensitive neurons made specific functional contributions to MB discrimination tasks. Our findings support the view that V2 plays a critical role in MB analysis and may achieve this through a neural circuit within area V2.

【 授权许可】

CC BY