title: CIRCADIAN ACTIVITY AND NOISE COMPARISONS OF TWO CONFINED GROUPS WITH AND WITHOUT REFERENCE TO CLOCK TIME.
mesh_terms: D000293:Adolescent; D001519:Behavior; D002648:Child; D002940:Circadian Rhythm; D005853:Geriatrics; D006801:Humans; D009622:Noise; D010507:Periodicity; D011593:Psychology, Social; D013998:Time Perception
keywords: ADOLESCENCE; BEHAVIOR; CHILD; CIRCADIAN RHYTHM; GERIATRICS; PERIODICITY; PSYCHOLOGY, SOCIAL; TIME PERCEPTION