[Reproduction of the shape of an acoustic wave in the overall synchronized response of the cochlear nuclei].

The waveform of the frequency-following response (FFR) of the cat cochleas nuclei stimulated by single tones and two-tone harmonic complexes of low frequencies (less than or equal to 500 Hz) corresponds to periodic sequence of evoked potentials (EP-like waves). The wave-form similarity between FFR and EP disappears at higher frequency tones. The change in the wave-form of the two-tone sound signal resulted in distinct changes both in the amplitude and in the moment of occurrence of the EP-like waves in the FFR. In the presence of the first harmonics, the FFR to the relatively high harmonics (from the 4th to the 6th one) showed augmentation during one half-period of the first harmonic and diminution during the other one.