| Presentation | 2002/3/12 Self-Organization of Orientation Columns by Introducing a Fluctuation of Threshold Hiroyuki TAJIMA, Kunihiko FUKUSHIMA, Toshinobu YOSHIDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposed a neural network model in which orientation map is self-organized. We believe that thresholds of each cell are always fluctuating while the cells are recieving inputs, and introduced this mechanism in our model. Although varieties of self-organizing neural network models of orientation map have been proposed so far, most of them do not consider retinotopy. Our model consists of a three layered network and has variable inter- and intra-layer connections. We use a learning rule with synaptic competition to modify the inter-layer connections. Each cell in the output layer recieves excitatory connections from the cells in its vicinity and inhibitory connections from the cells in the surround. The inhibitory intra-layer connections are modified through anti-Hebbian learning, and the excitatory intra-layer connections are modified in such a way that the retio of the sum of inhibitory and excitatory intra-layer connections be kept constant. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | neural network model / self-organization / orientation column / retinotopy / synaptic competition / fluctuation of threshold |
| Paper # | NC2001-175 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2002/3/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Self-Organization of Orientation Columns by Introducing a Fluctuation of Threshold |
| Sub Title (in English) | |
| Keyword(1) | neural network model |
| Keyword(2) | self-organization |
| Keyword(3) | orientation column |
| Keyword(4) | retinotopy |
| Keyword(5) | synaptic competition |
| Keyword(6) | fluctuation of threshold |
| 1st Author's Name | Hiroyuki TAJIMA |
| 1st Author's Affiliation | The University of Electro-Communications() |
| 2nd Author's Name | Kunihiko FUKUSHIMA |
| 2nd Author's Affiliation | Tokyo University of Technology |
| 3rd Author's Name | Toshinobu YOSHIDA |
| 3rd Author's Affiliation | The University of Electro-Communications |
| Date | 2002/3/12 |
| Paper # | NC2001-175 |
| Volume (vol) | vol.101 |
| Number (no) | 736 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |