title: Biological rhythms and affective illness.
mesh_terms: D000204:Activity Cycles; D000220:Adaptation, Biological; D001683:Biological Clocks; D001714:Bipolar Disorder / Q000503:physiopathology; D002940:Circadian Rhythm; D003866:Depressive Disorder / Q000503:physiopathology; D004569:Electroencephalography; D006801:Humans; D019964:Mood Disorders / Q000451:nursing / Q000503:physiopathology*; D010507:Periodicity; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology