Efferent gain reduction is strongest for tones near the target characteristic 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
Categorization
Category: Causal Relationships
- DEFINE: Clarifies characteristic frequency as the location-anchored reference that efferent tuning is defined against.
Related
- Efferent inhibition is strongest for tones near the cochlear site’s frequency (similarity 0.94)
- Efferent effect is frequency-tuned, strongest nearest the test frequency (similarity 0.94)
- Efferent cochlear gain reduction is frequency-selective around the signal frequency. (similarity 0.86)
- The efferent effect is frequency-tuned along the cochlear tonotopic axis in humans (similarity 0.85)
- Efferent effects extend 0.5-2 octaves around the probe frequency. (similarity 0.85)
- Otoacoustic and psychophysical estimates of efferent gain disagree due to stimulus constraints (similarity 0.84)
- Cochlear gain reduction via efferents is sharply tuned with a 1300 Hz bandwidth. (similarity 0.84)
- Efferent suppression is sometimes asymmetric, peaking for elicitors below the probe (similarity 0.83)
- Efferent cochlear gain reduction is greatest when the precursor matches the signal frequency (similarity 0.82)
- Human efferent tuning measured psychoacoustically matches otoacoustic-emission measures (similarity 0.82)
- The modeled efferent effects likely generalize to natural acoustic hearing (similarity 0.81)
- Brain efferents can dynamically adjust cochlear gain during listening (similarity 0.79)
- Psychoacoustic measures probe efferent function even where OAEs fail (similarity 0.79)
- Suppressor tones reveal tuning curves matching neural frequency selectivity (similarity 0.79)
- Medial olivocochlear efferent feedback reduces cochlear gain most for frequencies near the signal (similarity 0.79)