Modulation of theta-band rhythm during sequential memory encoding

DOI

Bibliographic Information

Other Title
  • 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

Details 詳細情報について

  • CRID
    1390564238023723264
  • NII Article ID
    130007484057
  • DOI
    10.11239/jsmbe.annual56.s62
  • ISSN
    18814379
    1347443X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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