Instantaneous acceleration and amplification of hippocampal theta wave coincident with phasic pontine activities during REM sleep

Akihiro Karashima, Mitsuyuki Nakao, Norihiro Katayama, Kazuki Honda

研究成果: Article査読

25 被引用数 (Scopus)

抄録

Rapid eye movement (REM) sleep is characterized by hippocampal theta waves and phasic spike-like waves originating from the pons, termed ponto-geniculo-occipital (PGO) waves in cats and pontine (P) waves in rats. While the theta wave and PGO/P wave have been suggested to participate in higher-order brain functions, their generation mechanisms and roles in brain functions have been studied independently. Therefore, the present study investigated instantaneous aspects of the relationship between theta waves and PGO/P waves in both cats and rats. Theta wave was instantaneously accelerated several hundred milliseconds before the negative peak of the PGO/P wave in both animals, and was also amplified just before PGO/P wave occurrence. Considering the integrated knowledge provided by studies of both animals, these results suggest that PGO/P wave-related activities in the pons are delivered to the theta wave generator. The activations of the theta wave coincident with PGO/P wave might facilitate cooperative contribution to higher-order brain functions in REM sleep.

本文言語English
ページ(範囲)50-56
ページ数7
ジャーナルBrain research
1051
1-2
DOI
出版ステータスPublished - 2005 7 27

ASJC Scopus subject areas

  • 神経科学(全般)
  • 分子生物学
  • 臨床神経学
  • 発生生物学

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