Response of cortical evoked potentials to electric stimulation of the acoustic nerve in animals with damaged cochlea

Evoked potentials of the auditory cortex during the electrical stimulation of the cochlea were studied in acute experiments on cats. A series of electric pulses of short duration and different frequency delivered to the streptomycin-damaged cochlea were used as a stimulus. It has been shown that an amplitude and latency of electrical cortex responses depended on the number of pulses in series and on the interpulse intervals. Amplitudes of evoked responses increased with the growth of the number of stimuli. Latent periods changed in a narrower stimulation frequency band. Dependence of the induced potentials' amplitude growth on the increase in the number of electric pulses changed as a result of the two-fold enhancement of the stimulation amplitude.