ON PARTICIPATION OF THE RIGHT AND LEFT HE MISPHERES IN REALIZATION OFMAZE HABIT IN MALE-MICE BALB C/

Motor, Searching and alimentary activity of male mice BALB/c as well a s spatiomotor asymmetry was studied under conditions of training in sy mmetrical multialternative maze. In the period of realization of the s table optimal habit the right-side spatially-motor asymmetry was obser ved in intact males. In animals with inactivated left or right hemisph ere motor and alimentary activity was reduced and the structure of ela borated maze habit was broken. These changes were more expressed in mi ce with inactivated left hemisphere. Searching activity was augmented during cortical inactivation of the right hemisphere (this was associa ted with the right-side spatially-motor asymmetry) and reduced during inactivation of the left hemosphere (associated with the left-side asy mmetry). The left hemisphere was dominant in realization of all main c omponents of elaborated maze habit (including the spatially-motor asym metry) in male mice BALB/c as in female ones.