Modulation detection interference on presentation of two amplitude‐modulated tones

摘要: Psychophysical studies have shown that the processing of modulation in one frequency channel is interfered with when a similar pattern present another channel. To test for physiological correlates to this phenomena sinusoidally amplitude‐modulated (SAM) probe tone was presented presence simultaneously gated, modulated, or unmodulated interfering while recording from scalp anesthetized gerbils. Responses were recorded scalp, amplified, digitized, and averaged. The amplitude response determined as magnitude Fourier transform measured at corresponding fmod fc. compared responses obtained SAM alone. shape interference highly dependent on tone. With some frequencies an increase relative control observed pro...