| Presentation | 2016-03-22 Comparison of micro-architecture for orientation and spatial frequency selectivity between macaque V1 and V4 Mahya Amano, Koji Ikezoe, Shinji Nishimoto, Ichiro Fujita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We examined functional architecture for orientation and spatial frequency at single cellular level in macaque visual cortical areas V1 and V4. We performed in vivo two-photon calcium imaging in layer 2/3 of V1 and V4, and recorded fluorescence signals of individual neurons during presentation of natural movies. For each neuron, we made an encoding model that simulates its fluorescence responses to the movies. We then fed various drifting gratings as inputs into the model to estimate orientation and spatial frequency tunings. In V1, consistent with previous studies, nearby neurons shared both preferred orientation and spatial frequency. In V4 nearby neurons shared preferred orientation but not preferred spatial frequency. We found systematic maps for representing orientation in both V1 and V4. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | monkey / 2-photon calcium imaging / V1 / V4 / natural movie |
| Paper # | NC2015-90 |
| Date of Issue | 2016-03-15 (NC) |
| Conference Information | |
| Committee | MBE / NC |
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| Conference Date | 2016/3/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsuo Kobayashi(Kyoto Univ.) / Toshimichi Saito(Hosei Univ.) |
| Vice Chair | Yutaka Fukuoka(Kogakuin Univ.) / Shigeo Sato(Tohoku Univ.) |
| Secretary | Yutaka Fukuoka(akita noken) / Shigeo Sato(Kogakuin Univ.) |
| Assistant | Takenori Oida(Kyoto Univ.) / Ryota Horie(Shibaura Inst. of Tech.) / Hiroyuki Kanbara(Tokyo Inst. of Tech.) / Hisanao Akima(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparison of micro-architecture for orientation and spatial frequency selectivity between macaque V1 and V4 |
| Sub Title (in English) | |
| Keyword(1) | monkey |
| Keyword(2) | 2-photon calcium imaging |
| Keyword(3) | V1 |
| Keyword(4) | V4 |
| Keyword(5) | natural movie |
| 1st Author's Name | Mahya Amano |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Koji Ikezoe |
| 2nd Author's Affiliation | University of Yamanashi(Univ. of Yamanashi) |
| 3rd Author's Name | Shinji Nishimoto |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 4th Author's Name | Ichiro Fujita |
| 4th Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2016-03-22 |
| Paper # | NC2015-90 |
| Volume (vol) | vol.115 |
| Number (no) | NC-514 |
| Page | pp.pp.119-124(NC), |
| #Pages | 6 |
| Date of Issue | 2016-03-15 (NC) |