Early visual mechanisms of shitsukan perception

2014 Fiscal Year Final Research Report

• Project Area: Integrative studies of neural mechanisms and advanced information technologies for perception of material and surface qualities
• Project/Area Number: 22135006
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Complex systems
• Research Institution: Osaka University
• Principal Investigator: OHZAWA Izumi 大阪大学, 生命機能研究科, 教授 (20324824)
• Co-Investigator(Kenkyū-buntansha): SASAKI Kota 大阪大学, 生命機能研究科, 助教 (40467501)
• Co-Investigator(Renkei-kenkyūsha): TANAKA Hiroki (40335386)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 質感 / 初期視覚野 / 大脳 / 空間周波数 / 方位選択性 / テクスチャー / ウェーブレット / MT野

Outline of Final Research Achievements

Using locally designed and constructed experiment systems capable of recording simultaneously from tens of neurons, we have conducted neurophysiological studies on early and mid-stage visual areas in mammalian visual cortex. The purpose of research is to separate stimulus selectivities of neurons into various components including, form, texture, and binocular cues.
We have developed and applied new analysis methods to explore high-dimensional stimulus parameter space in a highly efficient manner. With these neurophysiological experiments, we have characterized neurons with respect to binocular texture cues. We have also obtained information regarding the degree of integration of neural circuitry that shape stimulus selectivities of high-order neurons based on the input from low-order neurons within the visual cortex.

Free Research Field

視覚神経科学、神経生理学