Cochlear compression protects modulation detection from masking noise
Evidence
The amount with which AM detection thresholds worsened for the NH listeners was significantly correlated to the DPOAE threshold indicating that those listeners with the widest auditory filters and steepest compression slopes were less impacted by the addition of the noise. Because this correlation happened for both the NB and BB noise conditions, perhaps cochlear compression and to a lesser extent the width of the auditory filters might be responsible for this result. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5872
The amount with which AM detection thresholds worsened for the NH listeners was significantly correlated to the DPOAE threshold indicating that those listeners with the widest auditory filters and steepest compression slopes were less impacted by the addition of the noise. Because this correlation happened for both the NB and BB noise conditions, perhaps cochlear compression and to a lesser extent the width of the auditory filters might be responsible for this result. The EFR slope metric was not significantly correlated to the AM detection threshold reductions in the NH listeners. Because the EFR slope was correlated to the AM detection performance in quiet for the NH listeners, the degradation measure plotted in Fig. 3 may have factored out its influence. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5902
Categorization
- XREF: Connects to the reader’s wider interest in cochlear gain/compression as the mechanical substrate behind psychoacoustic deficits seen in earlier hearing chapters.
- corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 5872; Dijk, Pim van, Physiology, Psychoacoustics and…, 5902