Functional role of symmetric and asymmetric STDP rules in sequence learning in the brain
Project/Area Number |
19500126
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Intelligent informatics
|
Research Institution | Kyushu Institute of Technology |
Principal Investigator |
HAYASHI Hatsuo Kyushu Institute of Technology, 大学院・生命体工学研究科, 教授 (00108664)
|
Project Period (FY) |
2007 – 2009
|
Project Status |
Completed (Fiscal Year 2009)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
Keywords | 嗅内皮質 / 神経回路網モデル / 時系列学習 / 海馬歯状回 / 顆粒細胞モデル / シナプス競合 / STDP学習ルール / シナプス間競合 / LTDウインドウ / 感覚情報統合 |
Research Abstract |
We investigated roles of symmetric and asymmetric STDP learning rules in sequence learning in the entorhinal cortex and the hippocampus. It was elucidated that the symmetric STDP learning rule was suitable for establishing a sequence of loop connections, which represented a sequence of places, amid background noise. In contrast, the asymmetric STDP learning rule was suitable for synaptic competition to select spatial information accompanied by valuable non-spatial information such as odor and to cause directional propagation of neuronal activity in the hippocampal CA3 network. These results suggest that it is important to consider what STDP learning rules are suitable for local network structures in order to unveil mechanisms of the sequence learning in the whole system consisting of the hippocampus and the entorhinal cortex.
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Report
(4 results)
Research Products
(30 results)