[The effect of fluctuating currents on the time course of apomorphine-induced stereotypy in rats]

The external rhythmogenic influence (repeated fluctuation low intensity) disorganized the time-course and attenuated the apomorphine-induced stereotyped behavior in rats. A decrease in the number of 4-9-minute waves on chronograms in comparison with control an animals indicated reduction of stability of the pharmacological response and the rapid formation of tolerance to the drug.