Human efferent tuning measured psychoacoustically matches otoacoustic-emission measures
Evidence
Efferent-mediated cochlear gain reduction was greatest for precursors with frequencies the same as, or close to that of, the signal (gain was reduced by about 20 dB), and least for precursors with frequencies well removed from that of the signal (gain remained at around 40 dB). The tuning of the efferent effect filter (tuning extending 0.5–0.7 octaves above and below the signal frequency) is within the range obtained in humans using otoacoustic emissions (Lilaonitkul and Guinan, J Assoc Res Otolaryngol 10:459–470, 2009; Zhao and Dhar, J Neurophysiol 108:25–30, 2012). — Dijk, Pim van, Physiology, Psychoacoustics and…, 5951
Categorization
Category: Connection Points
- XREF: Links the psychophysical FDMC method to the OA-E-based efferent measures in humans — the two independent measures of efferent tuning agree.
Related
- The efferent effect is frequency-tuned along the cochlear tonotopic axis in humans (similarity 0.88)
- Psychoacoustic measures probe efferent function even where OAEs fail (similarity 0.84)
- Psychoacoustic tuning curves directly reflect cochlear mechanical processing. (similarity 0.84)
- Medial olivocochlear efferent feedback reduces cochlear gain most for frequencies near the signal (similarity 0.84)
- Cochlear otoacoustic emissions measurably shift behavioral thresholds, selectivity, and loudness (similarity 0.83)
- Otoacoustic and psychophysical estimates of efferent gain disagree due to stimulus constraints (similarity 0.83)
- Efferent gain reduction is strongest for tones near the target characteristic frequency. (similarity 0.82)
- Cochlear gain reduction via efferents is sharply tuned with a 1300 Hz bandwidth. (similarity 0.81)
- Brain efferents can dynamically adjust cochlear gain during listening (similarity 0.81)
- Otoacoustic emission levels predict individual decision weights in level discrimination tasks (similarity 0.81)
- Efferent cochlear gain reduction is frequency-selective around the signal frequency. (similarity 0.81)
- The modeled efferent effects likely generalize to natural acoustic hearing (similarity 0.81)
- Efferent inhibition is strongest for tones near the cochlear site’s frequency (similarity 0.80)
- The efferent-effect filter at 4 kHz has a Q10 of about 3.1 (similarity 0.80)
- Efferent effect is frequency-tuned, strongest nearest the test frequency (similarity 0.80)
Broader Connections
- Otoacoustic and psychophysical estimates of efferent gain disagree due to stimulus constraints
#contradicts(0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5981 - Human efferent reflex tuning spans about half an octave around the signal
#expands(0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5953 - Psychoacoustic measures probe efferent function even where OAEs fail
#expands(0.75) - Mild hearing loss eliminates otoacoustic emissions but not psychoacoustic efferent measures
#expands(0.75) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5953