[Characteristics of the excitation changes in the visual area of the cerebral cortex under psychostimulant action].

The experiments were carried out on cats with chronically implanted electrodes. It was shown by means of recording the primary responses (PR) of the visual cortex that amphetamine (0,5 mg/kg), sydnocarb (3 mg/kg), and catinon (1 mg/kg) depress the amplitude of the single PR and lessen concurrently the depression of the testing response in the cycle of PR recovery. Cocaine (1 mg/kg) suppresses the amplitude of the single PR and intensifies the depression of the testing PR in the recovery cycle.