Theta wave amplitude and frequency are differentially correlated with pontine waves and rapid eye movements during REM sleep in rats

Akihiro Karashima, Mitsuyuki Nakao, Kazuki Honda, Naoko Iwasaki, Norihiro Katayama, Mitsuaki Yamamoto

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The present study examined the correlations between the dynamics of hippocampal theta waves and pontine waves (P waves) and rapid eye movements (REMs) densities during REM sleep. Theta wave peak frequency and theta amplitude were estimated as the parameters of theta wave dynamics in each 3 s segment. The peak frequency and theta amplitude were positively correlated with P wave and REMs densities, however their detailed correlation properties were distinct from each other. Dependency of peak frequency on P wave/REMs density did not change significantly from that on REMs/P wave density. On the other hand, dependency of the theta amplitude on P wave/REMs density significantly increased with an increased REMs/P wave density. Because hippocampal theta waves and P waves are involved in learning and memory functions during REM sleep, the correlation between theta parameters and P wave density might help to clarify these functions.

Original languageEnglish
Pages (from-to)283-289
Number of pages7
JournalNeuroscience Research
Volume50
Issue number3
DOIs
Publication statusPublished - 2004 Nov
Externally publishedYes

Keywords

  • Correlations
  • Hippocampal theta wave
  • P wave
  • PGO wave
  • REM sleep
  • Rapid eye movements

ASJC Scopus subject areas

  • Neuroscience(all)

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