Abstract:The efferent crossed olivocochlear bundle (COCB) was electrically stimulated during recordings of acoustically evoked potentials from the guinea pig cochlea. Round window recordings of the click-evoked whole nerve action potential were decreased during COCB stimulation by the equivalent of 10–20 dB SPL. Recovery was complete about 400 ms after the stimulation ended. COCB stimulation increased by 0–3 equivalent dB the round window cochlear microphonics in response to a 1-kHz continuous tone, similar to earlier … Show more
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