title: [FREE-RUN STUDY OF CIRCADIAN RHYTHMS OF THE PULSE, OF WAKING-SLEEP ALTERNATION AND ESTIMATION OF TIME DURING THE 2 MONTHS OF SUBTERRANEAN SOJOURN OF A YOUNG ADULT MALE].
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D001143:Arousal; D001288:Attention; D035843:Biomedical Research; D002940:Circadian Rhythm; D006801:Humans; D010507:Periodicity; D011674:Pulse; D012890:Sleep; D013998:Time Perception
keywords: ADAPTATION, PHYSIOLOGICAL; AROUSAL; ATTENTION; CIRCADIAN RHYTHM; CLINICAL RESEARCH; PERIODICITY; PULSE; SLEEP; TIME PERCEPTION
vernacular_title: ETUDE EN LIBRE-COURS DES RYTHMES CIRCADIENS DU POULS, DE L'ALTERNANCE VEILLE-SOMMEIL ET DE L'ESTIMATION DU TEMPS PENDANT LES DEUX MOIS DE S'EJOUR SOUTERRAIN D'UN HOMME ADULTE JEUNE.