H. Lach et Z. Srebro, CIRCADIAN-RHYTHM OF LOCOMOTOR AND MOTOR-ACTIVITY IN LABORATORY MICE -THE INFLUENCE OF LIGHT AND NEUROPEPTIDE ADMINISTRATION .2. VASOPRESSIN, Acta Biologica Cracoviensia. Series Zoologia, 37, 1995, pp. 57-63
Adult male laboratory mice display a circadian rhythm of both locomoto
r (barrel rotating) rhythm and total motor activity rhythm. Continuous
light reduced and continuous darkness enhanced both locomotor and mot
or activity. Vasopressin strongly inhibited the activity of DD (consta
nt darkness) and LL (constant light) animals.