Efferent inhibition is strongest for tones near the cochlear site’s frequency

Evidence

Recordings from guinea pigs show the greatest reduction in BM vibration due to efferent stimulation when the stimulating tone is close to or above the characteristic frequency (CF) associated with the recording site (Russell and Murugasu 1997 ). Similarly, suppression of human otoacoustic emissions via efferent activation is more effective for stimulating frequencies slightly above and below the test probe frequency (Maison et al. 2000 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 5953