title: Is there a first night effect? (a revisit).
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D001007:Anxiety; D002940:Circadian Rhythm; D004569:Electroencephalography; D004777:Environment; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis; D009043:Motor Activity; D012107:Research Design; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM; D013732:Test Anxiety Scale; D013997:Time Factors