title: A neuropsychiatric view of insomnia.
mesh_terms: D000368:Aged; D001007:Anxiety; D001921:Brain / Q000502:physiology; D002940:Circadian Rhythm; D004325:Dreams; D004569:Electroencephalography; D004644:Emotions; D005260:Female; D006801:Humans; D008297:Male; D010146:Pain; D012701:Serotonin / Q000502:physiology; D007319:Sleep Initiation and Maintenance Disorders / Q000209:etiology; D012895:Sleep, REM
chemical_list: D012701:Serotonin