| Paper Abstract and Keywords |
| Presentation |
2005-11-19 13:40
Theta phase coding due to entorhinal cortex - hippocampal loop circuits organized by sensory signals
Jun Igarashi, Katsumi Tateno, Hatsuo Hayashi (kyutech) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
When a rat crosses the certain region of an experimental apparatus, certain neurons in the hippocampal region or the entorhinal cortex discharge. This is a place cell. The region is the place field of the place cell. When the rat enters the place field, the place cell begins firing at a later phase of the theta rhythm. The firing phase of the place cell advances with approaching the center of the place field. This is a phase coding of the place cell. We have previously proposed that an entorhinal cortex layer II model with predetermined feedback loops can encode the place information as the phase coding. In the present study, the feedback loop from the stellate cells to the stellate cells in the entorhinal cortex model was automatically retrieved by the spike timing dependent plasticity rule (STDP). The difference in the firing rate of the external input to the stellate cells led to the phase difference of spikes of the stellate cells. The phase difference of spikes between the stellate cells modified the synaptic weight using STDP. After the learning was completed, the present entorhinal cortex layer II model exhibits the phase precession. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
entorhinal cortex / subthreshold oscillations / theta rhythm / phase precession / phase coding / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 105, no. 417, NLP2005-79, pp. 47-52, Nov. 2005. |
| Paper # |
NLP2005-79 |
| Date of Issue |
2005-11-12 (NLP) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
NLP |
| Conference Date |
2005-11-18 - 2005-11-19 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kyushu Institute of Technology |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Special session and general. Subject of special session is ``Randomness and prediction---from fundamentals to applications''. |
| Paper Information |
| Registration To |
NLP |
| Conference Code |
2005-11-NLP |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Theta phase coding due to entorhinal cortex - hippocampal loop circuits organized by sensory signals |
| Sub Title (in English) |
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| Keyword(1) |
entorhinal cortex |
| Keyword(2) |
subthreshold oscillations |
| Keyword(3) |
theta rhythm |
| Keyword(4) |
phase precession |
| Keyword(5) |
phase coding |
| Keyword(6) |
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| Keyword(7) |
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| 1st Author's Name |
Jun Igarashi |
| 1st Author's Affiliation |
Kyushu Institute of Technology (kyutech) |
| 2nd Author's Name |
Katsumi Tateno |
| 2nd Author's Affiliation |
Kyushu Institute of Technology (kyutech) |
| 3rd Author's Name |
Hatsuo Hayashi |
| 3rd Author's Affiliation |
Kyushu Institute of Technology (kyutech) |
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| Speaker |
Author-1 |
| Date Time |
2005-11-19 13:40:00 |
| Presentation Time |
25 minutes |
| Registration for |
NLP |
| Paper # |
NLP2005-79 |
| Volume (vol) |
vol.105 |
| Number (no) |
no.417 |
| Page |
pp.47-52 |
| #Pages |
6 |
| Date of Issue |
2005-11-12 (NLP) |