Diurnal variation in the P300 component of human cognitive event-related potential

Shigekazu Higuchi, Yang Liu, Takao Yuasa, Akira Maeda, Yutaka Motohashi

研究成果: Contribution to journalArticle査読

34 被引用数 (Scopus)

抄録

Diurnal variation in the P300 component of the human cognitive event-related potential (ERP) was examined. The P300 component is considered to be a measure of neuroelectric activity related to cognitive functions such as attention allocation and information processing. Nine diurnally active healthy male subjects whose sleep-wake rhythms were synchronized prior to the experiment were studied. The P300 components oral temperature, heart rate, left- and right-hand grip strength, reaction time, subjectively rated sleepiness, attention level, and fatigue were measured at 08:00, 11:00, 14:00, 17:00, and 20:00. Significant diurnal variations in P300 latency, P300 amplitude, oral temperature, heart rate, left- and right-hand grip strength, subjectively rated sleepiness, and attention level were observed. The P300 latency at 08:00 was significantly longer than at 11:00, 17:00, and 20:00, while the P300 amplitude at 08:00 was significantly greater than at 17:00 and 20:00. The P300 latency was correlated positively with subjectively rated sleepiness and negatively correlated with subjectively rated attention level. These results suggest the existence of diurnal variation in human cognitive functions.

本文言語英語
ページ(範囲)669-678
ページ数10
ジャーナルChronobiology International
17
5
DOI
出版ステータス出版済み - 10 23 2000
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生理学
  • 生理学(医学)

フィンガープリント

「Diurnal variation in the P300 component of human cognitive event-related potential」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル