title: Diurnal mood variation and REM latency in depression.
mesh_terms: D000328:Adult; D000339:Affect; D002940:Circadian Rhythm; D003866:Depressive Disorder / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D011930:Reaction Time / Q000502:physiology; D012895:Sleep, REM / Q000502:physiology*