| Presentation | 2012-01-28 Gamma-band frequency modulation in rat hippocampus during fixation Hiroshi NISHIDA, Muneyoshi TAKAHASHI, Keiji IRAMINA, LAUWEREYNS L, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recent research indicates that the hippocampus is related to information retention during fixation periods in behavioral tasks. However, little is known about the neuronal mechanisms involved. We trained rats to fixate for one second during an alternation task while recording local field potentials from the hippocampal CA1 area. Our results indicated that gamma activity is modulated by theta oscillation during fixation and also that gamma-band modulation shifts from a high to a low frequency band. We propose that during early periods of fixation, the CA1 area receives extra-hippocampal information from entorhinal cortex (which sends high gamma oscillation). Subsequently, during late periods of fixation the CA1 area receives inputs from the CA3 area (which sends low gamma oscillations) which is related to behavioral expectation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Rat hippocampus / Theta / Gamma / Alert immobility / Local filed potential |
| Paper # | MBE2011-98 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2012/1/20(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Gamma-band frequency modulation in rat hippocampus during fixation |
| Sub Title (in English) | |
| Keyword(1) | Rat hippocampus |
| Keyword(2) | Theta |
| Keyword(3) | Gamma |
| Keyword(4) | Alert immobility |
| Keyword(5) | Local filed potential |
| 1st Author's Name | Hiroshi NISHIDA |
| 1st Author's Affiliation | Graduate School of Systems Life Sciences, Kyushu University() |
| 2nd Author's Name | Muneyoshi TAKAHASHI |
| 2nd Author's Affiliation | Graduate School of Systems Life Sciences, Kyushu University |
| 3rd Author's Name | Keiji IRAMINA |
| 3rd Author's Affiliation | Graduate School of Systems Life Sciences, Kyushu University |
| 4th Author's Name | LAUWEREYNS L |
| 4th Author's Affiliation | Graduate School of Systems Life Sciences, Kyushu University |
| Date | 2012-01-28 |
| Paper # | MBE2011-98 |
| Volume (vol) | vol.111 |
| Number (no) | 423 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |