Study on the flow of elementary visual feature signal in the cortex.

2015 Fiscal Year Final Research Report

• Project/Area Number: 24330205
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Experimental psychology
• Research Institution: Tohoku University
• Principal Investigator: Ichiro Kuriki 東北大学, 電気通信研究所, 准教授 (80282838)
• Co-Investigator(Kenkyū-buntansha): SHIOIRI Satoshi 東北大学, 電気通信研究所, 教授 (70226091) ; TOKUNAGA Rumi 立命館大学, 立命館グローバルイノベーション研究機構, 研究員 (80573914) ; MATSUMIYA Kazumichi 東北大学, 電気通信研究所, 准教授 (90395103)
• Research Collaborator: KASHIWASE Yoshiyuki ; OMORI Nobutaka ; XIE Hongfei ; YAMADA Yasuyuki ; MAEMURA Wakiko
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 脳活動計測 / fMRI / 視覚情報処理 / 色 / 運動 / 相互作用 / フィードバック

Outline of Final Research Achievements

Visual information signal in human brain is known to be once divided into elementary components, such as motion, shape, color, and etc., and combined after independent process at different regions in the brain. We investigated the representation of each elementary component of visual information in the brain and their way of interactions in the brain. We used motion signal modulated by color and luminance, and confirmed the interactions of these motion signals in human brain. Our results suggest that the way of interaction varies as a function of time after the offset of adapting stimulus. Next, we investigated the representation of color signal in the brain and found neurons that respond selectively to intermediate colors, in addition to those selective to opponent colors (red/green, yelllow/blue). Also, we investigated the shape of visual attention is affected by a feedback signal from the object-shape recognition process, by monitoring EEG components called SSVEP.

Free Research Field

実験心理学