title: Pentobarbital-induced phase shifts of circadian rhythms of locomotor activity are not mediated through stimulated activity in mice.
abstract: The possibility that phase shifts of circadian rhythms of locomotor activity induced by pentobarbital injections are mediated through hyperactivity after recovery from the sedative condition was tested in DBA/2 mice. The mice were restrained for 3 h in a tube immediately after injections of pentobarbital at either CT 9 or CT 0. The results indicated that immobilization did not block the phase shifts, suggesting that pentobarbital-induced phase shifts are not due to increasing the level of activity.
authors.affiliation: Department of Animal Physiology, Faculty of Agriculture, Nagoya University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ebihara
authors.forename: H
authors.initials: H
authors.lastname: Hayakawa
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000187:drug effects*; D006948:Hyperkinesis / Q000503:physiopathology* / Q000523:psychology; D007103:Immobilization; D008297:Male; D051379:Mice; D008811:Mice, Inbred DBA; D009043:Motor Activity / Q000187:drug effects*; D010424:Pentobarbital / Q000494:pharmacology*
chemical_list: D010424:Pentobarbital