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

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

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)669-678
Number of pages10
JournalChronobiology International
Volume17
Issue number5
DOIs
Publication statusPublished - Oct 23 2000
Externally publishedYes

Fingerprint

P300 Event-Related Potentials
Hand Strength
Evoked Potentials
Cognition
Heart Rate
Temperature
Automatic Data Processing
Reaction Time
Fatigue
Healthy Volunteers
Sleep

All Science Journal Classification (ASJC) codes

  • Physiology
  • Physiology (medical)

Cite this

Diurnal variation in the P300 component of human cognitive event-related potential. / Higuchi, Shigekazu; Liu, Yang; Yuasa, Takao; Maeda, Akira; Motohashi, Yutaka.

In: Chronobiology International, Vol. 17, No. 5, 23.10.2000, p. 669-678.

Research output: Contribution to journalArticle

Higuchi, Shigekazu ; Liu, Yang ; Yuasa, Takao ; Maeda, Akira ; Motohashi, Yutaka. / Diurnal variation in the P300 component of human cognitive event-related potential. In: Chronobiology International. 2000 ; Vol. 17, No. 5. pp. 669-678.
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