| Presentation | 2016-01-21 Binocular competition of the avian retinopetal system Yuki Ohwatari, Takuto Kawasaki, Takashi Izaki, Kazuki Hashimoto, Takeshi Katsume, Hiroshi Ohno, Hiroyuki Uchiyama, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The avian brains have a well-developed centrifugal control system (the isthmo-optic system) of the contralateral retina. Various evidences revealed that the isthmo-optic signals sending to the retina enhance retinal outputs locally and transiently, functioning as spatial attention. In the present study, we reversibly blocked the isthmo-optic signals by pharmacological inactivation of the isthmo-optic neurons. We assembled three touch displays to present a target letter and distracters in a very wide visual field of quail, and trained quails to reach the target letter with a beak. Blocking of the isthmo-optic signals decreased selection accuracy of the targets that were presented in the visual field contralateral to the injection side (= affected side of inactivation), but increased that of the targets that were presented in the visual field ipsilateral to the injection side. Thus, the isthmo-optic systems of both sides may compete with each other for enhancement of the retinal output of a particular side. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | retina / centrifugal control of vision / isthmo-optic system / spatial attention / reaching task / competition |
| Paper # | MBE2015-87 |
| Date of Issue | 2016-01-14 (MBE) |
| Conference Information | |
| Committee | MBE |
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| Conference Date | 2016/1/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kagoshima University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsuo Kobayashi(Kyoto Univ.) |
| Vice Chair | Yutaka Fukuoka(Kogakuin Univ.) |
| Secretary | Yutaka Fukuoka(akita noken) |
| Assistant | Takenori Oida(Kyoto Univ.) / Ryota Horie(Shibaura Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Binocular competition of the avian retinopetal system |
| Sub Title (in English) | Pharmacological unilateral inactivation of the isthmo-optic nucleus in birds |
| Keyword(1) | retina |
| Keyword(2) | centrifugal control of vision |
| Keyword(3) | isthmo-optic system |
| Keyword(4) | spatial attention |
| Keyword(5) | reaching task |
| Keyword(6) | competition |
| 1st Author's Name | Yuki Ohwatari |
| 1st Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 2nd Author's Name | Takuto Kawasaki |
| 2nd Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 3rd Author's Name | Takashi Izaki |
| 3rd Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 4th Author's Name | Kazuki Hashimoto |
| 4th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 5th Author's Name | Takeshi Katsume |
| 5th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 6th Author's Name | Hiroshi Ohno |
| 6th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 7th Author's Name | Hiroyuki Uchiyama |
| 7th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| Date | 2016-01-21 |
| Paper # | MBE2015-87 |
| Volume (vol) | vol.115 |
| Number (no) | MBE-413 |
| Page | pp.pp.17-20(MBE), |
| #Pages | 4 |
| Date of Issue | 2016-01-14 (MBE) |