| Presentation | 2003/1/28 Mathematical Model of Working Memory Using Hodgkin-Huxley Neurons and Effect of Neuromodulation Toshiaki OMORI, Tsuyoshi HORIGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a mathematical model for a working memory using Hodgkin-Huxley neurons of one compartment. We assume that there exist excitatory neurons and inhibitory neurons, and each excitatory neuron is distinguished as a selective neuron or a non-selective neuron. Selective neurons are assumed to form subpopulations in which a selective neuron does not belong to more than one subpopulation. Synaptic strengths between neurons within a subpopulation are imposed to be potentiated. By numerical simulations, we show that persistent firing occurs in a subpopulation of selective neurons, which corresponds to the retention of memory as the function of the working memory. Furthermore, we obtain different results depending on the strength of NMDA synapse and the strength of external input ; if we enhance the strength of external input to a subpopulation while the persistent firing is occurring in other subpopulations, the persistent firing occurs in the subpopulation or is sustained against the external input. These results show that the effects of neuromodulation and the strength of external input have an important role in the working memory. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | working memory / Hodgkin-Huxley neurons / neuromodulation |
| Paper # | NC2002-119 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2003/1/28(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | Mathematical Model of Working Memory Using Hodgkin-Huxley Neurons and Effect of Neuromodulation |
| Sub Title (in English) | |
| Keyword(1) | working memory |
| Keyword(2) | Hodgkin-Huxley neurons |
| Keyword(3) | neuromodulation |
| 1st Author's Name | Toshiaki OMORI |
| 1st Author's Affiliation | Graduate School of Information Sciences, Tohoku University() |
| 2nd Author's Name | Tsuyoshi HORIGUCHI |
| 2nd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| Date | 2003/1/28 |
| Paper # | NC2002-119 |
| Volume (vol) | vol.102 |
| Number (no) | 628 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |