| Presentation | 2015-03-16 Mechanisms of alpha-band rhythm modulation during sequential short-term memory encode Ryota CHITOSE, Moe YAMAJI, Shinya KURIKI, Koichi YOKOSAWA, |
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| Abstract(in Japanese) | (See Japanese page) | ||||
| Abstract(in English) | When memory items are presented sequentially, the beginning and the ending items are memorized well (primacy/recency effect). We recorded magnetoencephalogram during performing the following memory task. In the task, seven arrow images were presented sequentially. Afterwards, a recall number (e.g., "3") was presented. Each participant memorized the arrow directions in order and recalling the direction that was presented in the order indicated by the recall number (i.e., the direction of 3^| , 5^ | ) than during presenting beginning (1^ | , 7^ | ) items. In order to clarify relationship between the memory and alpha-band rhythm, the experiment in which item numbers were randomized between 3 and 9 was also performed. When the items were less than 7, the alpha-band rhythm was not suppressed sufficiently at ending items, however, the ending items were still memorized well. This result suggests that the alpha-band suppression is not directly related to memory itself. On the other hand, the region of alpha-band increase around midterm items was estimated to be located in visual cortex. This result suggests that increasing alpha-band rhythm during presenting midterm items is caused by functional inhibition of visual inputs which are irrelevant to memory. | |
| Keyword(in Japanese) | (See Japanese page) | ||||
| Keyword(in English) | memory / magnetoencephalography (MEG) / alpha-band rhythm / primacy effect / recency effect | ||||
| Paper # | MBE2014-148,NC2014-99 | ||||
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2015/3/9(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) | Mechanisms of alpha-band rhythm modulation during sequential short-term memory encode |
| Sub Title (in English) | |
| Keyword(1) | memory |
| Keyword(2) | magnetoencephalography (MEG) |
| Keyword(3) | alpha-band rhythm |
| Keyword(4) | primacy effect |
| Keyword(5) | recency effect |
| 1st Author's Name | Ryota CHITOSE |
| 1st Author's Affiliation | Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University() |
| 2nd Author's Name | Moe YAMAJI |
| 2nd Author's Affiliation | Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University |
| 3rd Author's Name | Shinya KURIKI |
| 3rd Author's Affiliation | Research Institute for Science and Technology, Tokyo Denki University |
| 4th Author's Name | Koichi YOKOSAWA |
| 4th Author's Affiliation | Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University |
| Date | 2015-03-16 |
| Paper # | MBE2014-148,NC2014-99 |
| Volume (vol) | vol.114 |
| Number (no) | 515 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |