[Participation of the frontal lobes in the integrative activity of the brain in Macaca mulatta monkeys].

Frontal lobe neuronal impulsation during complex behavioral program was investigated by means of the multineuronal recording technique. This program consisted of unspecific expectation after the anticipatory stimulus, conditioned stimulus and delay period, trigger signal and alternative selection followed by food award. Such processes as combining the external stimuli into the integrated program, preservation of short term memory traces, correct and incorrect experimental task solution are reflected in principal sulcus neuronal activity. The level of correct selection and corresponding correlates of neuronal activity changes are in direct dependence on the food motivation level. The data are discussed in connection with the development of thalamos--frontal associative brain system which participates in the behavioral program formation based on current biological motivation.