Analysis of information flow in the early visual cortex, which focused on the functional differences between central and peripheral visual field

2015 Fiscal Year Final Research Report

• Project/Area Number: 25750163
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Biomedical engineering/Biomaterial science and engineering
• Research Institution: Kagoshima University
• Principal Investigator: OKAMURA Jun-ya 鹿児島大学, 理工学域工学系, 助教 (30447594)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 視覚的認識 / 周辺視野 / 中心視野 / 周辺修飾 / 視覚皮質 / 内因性光計測 / 神経細胞活動 / 相互相関

Outline of Final Research Achievements

The purpose of the present research was to reveal neural mechanisms underlying surround modulation in visual recognition, which focused on the information flow in the visual cortex. We confirmed, by using the optical imaging based on intrinsic signals, that the surround modulation is strong in the cortical area corresponding to the peripheral visual field. In the electrophysiological experiment, we developed a system for analyzing correlations of neuronal activities between different recording sites. The time lags of the correlations suggest the information flow that underlies surround modulation in visual recognition.

Free Research Field

生体医工学