[Individual characteristics of spontaneous locomotor activity and adaptive behavior in the rat].

Spontaneous locomotor activity (SLA) of the male rats possesses significant individual differences. The daily volume of this activity is sufficiently stable for each separate individual. Animals with high and low SLA also differ in daily dynamics of this parameter. The behaviour of the rats with low SLA was characterized by lesser orienting activity and greater emotional reactivity in comparison to the rats with high SLA. By means of factor analysis it was established that, along with searching activity, emotional reactivity and alimentary motivation, the need in motor activity is one of the main inner factors, determining various manifestations of adaptive behaviour.