title: [Circadian rhythms in man (author's transl)].
abstract: The circadian system of man consists of a multiplicity of self-sustaining oscillators which are coupled to each other and which can be entrained by periodic factors in the environment, the zeitebers. From the interaction of these two forces results a high degree of temporal order within the organism. Freerunning circadian rhythms to be observed in isolated subjects living in constant conditions, usually have periods close to 25 h. The circadian system can split into components that freerun with different frequencies (internal desynchronization) and that partially can be entrained by zeitgeber. Analysis of the circadian organization has become of increasing importance for theory and practive in medicine.
mesh_terms: D001831:Body Temperature; D002395:Catecholamines / Q000097:blood; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D008660:Metabolism; D009043:Motor Activity; D012146:Rest; D012737:Sex Factors
chemical_list: D002395:Catecholamines; D006854:Hydrocortisone
vernacular_title: Zirkadiane Rhythmen des Menschen.