Are orientation selectivity of visual neurons originated in retinal ganglion cells?

2015 Fiscal Year Final Research Report

• Project/Area Number: 25380981
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Experimental psychology
• Research Institution: Osaka University
• Principal Investigator: Naito Tomoyuki 大阪大学, 医学(系)研究科(研究院), 講師 (90403188)
• Co-Investigator(Renkei-kenkyūsha): SATO Hiromichi 大阪大学, 医学(系)研究科(研究院), 教授 (50154092) ; Sawai Hajime 大阪大学, 医学(系)研究科(研究院), 准教授 (20202103) ; Miyoshi Tomomitsu 大阪大学, 医学(系)研究科(研究院), 助教 (70314309)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 刺激方位選択性 / 網膜神経節細胞 / 外側膝状体中継細胞 / 一次視覚野 / 受容野 / 受容野周囲抑制 / 相互相関解析

Outline of Final Research Achievements

Orientation selectivity has been believed to first emerge in the primary visual cortex. Our research revealed that 1) retinal ganglion cells and neurons in the lateral geniculate nucleus, the pre-stage of primary visual cortex exhibited significant orientation selectivity, and that 2) there were excitatory connections between neurons with similar preferred orientations in the early visual pathway. These results suggest that orientation selectivity of visual neurons is originated in the retinal ganglion cells.

Free Research Field

実験心理学