title: Psychobiologic effects of prolonged weightlessness (bed rest) in young healthy volunteers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000339:Affect; D002490:Central Nervous System / Q000502:physiology; D006801:Humans; D008297:Male; D009043:Motor Activity; D009132:Muscles / Q000502:physiology; D009460:Neurologic Examination; D012146:Rest; D012683:Sensory Deprivation; D012890:Sleep; D012895:Sleep, REM; D013026:Space Flight; D013997:Time Factors; D014893:Weightlessness