[Role of ultradian rhythm in the development of monotony].
D000293:Adolescent; D000328:Adult; D001683:Biological Clocks; D001887:Boredom; D002648:Child; D006801:Humans; D005082:Physical Exertion; D011603:Psychophysiology; D012894:Sleep Stages / Q000502:physiology; D013997:Time Factors
Rol' ul'tradiannogo ritma v razvitii monotonii.