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Diurnal Rhythm in Appearance of Frontal Midline Theta Activity
Author(s) -
Takii Osamu
Publication year - 1986
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1986.tb03175.x
Subject(s) - rhythm , morning , theta rhythm , audiology , circadian rhythm , psychology , alpha rhythm , period (music) , electroencephalography , medicine , neuroscience , physics , acoustics
It has been reported that there is a certain rhythm in the appearance of Fmθ. In the present study, round‐the‐clock changes in the appearance of Fmθ 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 Fmθ were investigated. As a result, it was found that there were signs of a frequent appearance of Fmθ in the morning, particularly between 10:00 and 12:00. Accordingly, it was evident that Fmθ appears at a certain diurnal rhythm.