Modulation of theta-band rhythm during sequential memory encoding
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- TAKASE RYOKEN
- Graduate School of Health Sciences, Hokkaido University
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- Boasen Jared
- Graduate School of Health Sciences, Hokkaido University
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- Kuriki Shinya
- Faculty of Health Sciences, Hokkaido University
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- Yokosawa Koichi
- Faculty of Health Sciences, Hokkaido University
Bibliographic Information
- Other Title
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- シーケンシャル記憶課題における記銘時θ波帯域脳律動振幅の変調
Abstract
<p>Synchronization of theta-band rhythm prior to memory encoding has previously been reported, and is thought to reflect cognitive load reduction. To further clarify the role of theta-band rhythm in memory processing, we recorded magnetoencephalograms of 30 healthy volunteers during a sequential memory task. The task comprised seven memory items, presented sequentially at either 600 ms (slow condition), or 250 ms (fast condition) intervals. In the slow condition, theta-band rhythm synchronized immediately after the presentation of each memory item. In the fast condition, marked synchronization occurred only after presentation of the first memory item. Meanwhile, accuracy rates of the third and later memory items were significantly higher for the slow condition than those for the fast condition. Our findings suggest that modulation, and particularly recovery of theta-band rhythm is essential for memory encoding, and correspondingly recall performance for successive memory items. </p>
Journal
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- Transactions of Japanese Society for Medical and Biological Engineering
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Transactions of Japanese Society for Medical and Biological Engineering Annual56 (Abstract), S62-S62, 2018
Japanese Society for Medical and Biological Engineering
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Details 詳細情報について
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- CRID
- 1390564238023723264
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- NII Article ID
- 130007484057
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- ISSN
- 18814379
- 1347443X
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed