ADVANCED APPEARANCE OF BEHAVIOR REACTIONS IN SENSORY DEPRIVED RAT PUPS

Bilateral section of nervus medianus was made in Wistar rat pups on 13 , 14, 15 or 16-th days of life. Developmental analysis of motor abilit ies, locomotor and exploration activities during 10-30 days of life re aveled three groups of facts. 1. Partial deafferentation of forelimbs dont influence on some types of behavior. 2. Some motor abilities hind ered in rat pups with section of nervus medianus.3. Partial deafferent ation of forelimb gives rise to the faster appearance of the new types of behavior. The developmental analysis allowed to suggest that faste r appearance of certain behavior reactions after deafferentation of th e forelimbs is a result of actualization of latent sensory inputs incl uding in the organization of these types of behavior but it is not con nected with changing of velocity of morphological maturation.