title: Diurnal rhythm in appearance of frontal midline theta activity.
abstract: It has been reported that there is a certain rhythm in the appearance of Fm theta. In the present study, round-the-clock changes in the appearance of Fm theta were analyzed. The Uchida-Kraepelin test was conducted for 5 minutes a day over a period of 3 days on 18 university students. The span of time from 08:00 to 24:00 was divided into 9 temporal points and each subject was tested at 4 different points. EEGs were recorded and the changes in the appearance of Fm theta were investigated. As a result, it was found that there were signs of a frequent appearance of Fm theta in the morning, particularly between 10:00 and 12:00. Accordingly, it was evident that Fm theta appears at a certain diurnal rhythm.
mesh_terms: D000328:Adult; D001143:Arousal / Q000502:physiology; D001288:Attention / Q000502:physiology; D002940:Circadian Rhythm; D003700:Delta Rhythm; D004569:Electroencephalography; D005625:Frontal Lobe / Q000502:physiology*; D006801:Humans; D008297:Male; D011340:Problem Solving / Q000502:physiology