title: A phase response curve for the locomotor activity rhythm of the rat.
abstract: A phase response curve was obtained for the locomotor activity rhythm of the rat. Mus norvegicus albicus, by interrupting a free-running rhythm with light signals of short duration. The response curve obtained was continuous and had the switch-over point at the position of 2 h before the acrophase, followed by the portion of advancing phase shift. The pattern of the curve was typical for the nocturnal rodent.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D002940:Circadian Rhythm; D008027:Light; D009043:Motor Activity / Q000502:physiology*; D051381:Rats