The efferent effect is frequency-tuned along the cochlear tonotopic axis in humans

Evidence

1. The FDMC method can be used to provide a measure of the frequency tuning of the efferent effect in humans using narrowband ipsilateral precursors. 2. Cochlear gain reduction is greatest for precursors with frequencies close to that of the signal, and least for precursors with frequencies well removed from the signal frequency. 3. The tuning of the efferent effect filter (0.5–0.7 octaves above and below the signal frequency) is within the range obtained in humans using OAEs (Lilaonitkul and Guinan 2009 ; Zhao and Dhar 2012 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 5982