| Presentation | 2021-01-22 Attentional modulation of spike synchrony in a disinihibition network model Nobuhiko Wagatsuma, Haruka Shimomura, Sou Nobukawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recent computational study has reported that top-down attention mediated by feedback signals modulates the neuronal activities in visual areas via activating inhibitory neurons. In this study, we propose network model consisting excitatory Border Ownership (BO) neuron and two classes of inhibitory neurons (SOM and VIP neurons). Attention was mediated by the projection of VIP to SOM neurons, whereas visual inputs projected to both Pyr and SOM neurons. Simulations of the model were in good agreement with attentional modulation of physiological V2 neurons, which indicated that attention decreased spike synchrony between pairs of BO model neurons, independent of the increase in their firing rates due to attention. These results suggested that the behavior of two types of inhibitory neurons underlie the attentional modulation in visual cortices. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Border-Ownership / Cortical Network Model / disinhibition / Visual Attention / Synchrony |
| Paper # | NC2020-39 |
| Date of Issue | 2021-01-14 (NC) |
| Conference Information | |
| Committee | NC / NLP |
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| Conference Date | 2021/1/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | NC，NLP |
| Chair | Kazuyuki Samejima(Tamagawa Univ) / Kiyohisa Natsume(Kyushu Inst. of Tech.) |
| Vice Chair | Rieko Osu(Waseda Univ.) / Takuji Kosaka(Chukyo Univ.) |
| Secretary | Rieko Osu(NTT) / Takuji Kosaka(ATR) |
| Assistant | Ken Takiyama(TUAT) / Nobuhiko Wagatsuma(Toho Univ.) / Toshikaza Samura(Yamaguchi Univ.) / Hideyuki Kato(Oita Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Neurocomputing / Technical Committee on Nonlinear Problems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Attentional modulation of spike synchrony in a disinihibition network model |
| Sub Title (in English) | |
| Keyword(1) | Border-Ownership |
| Keyword(2) | Cortical Network Model |
| Keyword(3) | disinhibition |
| Keyword(4) | Visual Attention |
| Keyword(5) | Synchrony |
| 1st Author's Name | Nobuhiko Wagatsuma |
| 1st Author's Affiliation | Toho University(Toho Univ.) |
| 2nd Author's Name | Haruka Shimomura |
| 2nd Author's Affiliation | Toho University(Toho Univ.) |
| 3rd Author's Name | Sou Nobukawa |
| 3rd Author's Affiliation | Chiba Institute of Technology(CIT) |
| Date | 2021-01-22 |
| Paper # | NC2020-39 |
| Volume (vol) | vol.120 |
| Number (no) | NC-331 |
| Page | pp.pp.40-44(NC), |
| #Pages | 5 |
| Date of Issue | 2021-01-14 (NC) |