Mild hearing losses were chosen specifically to ensure measurable DPOAEs

Evidence

The test population was formed with 10 subjects (4 male, 6 female), aged from 20 to 32 (mean: 25.9), that had near normal hearing thresholds (< 15 dB HL, flat), 4 subjects (3 male, 1 female) aged from 25 to 35 (mean: 25.9), with a normal 4 kHz threshold, but a slightly sloping audiogram in the higher frequencies, and 7 subjects (3 male, 4 female) aged from 39 to 75 (mean: 60.7), with a near 25 dB dB loss at 4 kHz and a mild hearing loss at the higher frequencies. We chose listeners with mild hearing losses to ascertain they would have measurable DPOAEs. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5877

Categorization

Category: Factual Claims

• DEFINE: Defines DPOAE as the metric linking cochlear function (distortion product otoacoustic emissions) to hearing status in this study.

Related

• Mild hearing-impaired listeners retain measurable DPOAEs (similarity 0.96)
• Mild hearing loss eliminates otoacoustic emissions but not psychoacoustic efferent measures (similarity 0.82)
• Hearing-impaired listeners in these tests had moderate symmetric sloping losses (similarity 0.82)
• Differential metrics can separate cochlear gain loss from temporal coding deficits in hearing loss (similarity 0.81)
• EFR metrics capture hearing loss aspects beyond pure audiometric thresholds (similarity 0.81)
• Hearing loss correlates strongly with age even among listeners with clinically near-normal thresholds (similarity 0.80)
• DCOAE measurements isolate the f2 site free of fine structure (similarity 0.80)
• Hearing-impaired listeners gain far less from noise gaps than normal listeners (similarity 0.80)
• Hearing loss correlates weakly with precedence-effect echo thresholds. (similarity 0.80)
• Blind-tested listeners with normal hearing produce reliable, measurement-grade subjective ratings (similarity 0.80)
• Mild SNHL elevates thresholds from 15 to 30 dB across frequency (similarity 0.79)
• Even slight hearing losses of 16-25 dB HL may benefit from hearing aids. (similarity 0.79)
• The audiogram does not predict pitch perception deficits in hearing loss (similarity 0.79)
• Hearing-impaired level just-noticeable-differences are about 1 to 2 dB (similarity 0.79)
• Mild hearing loss makes trained listeners give inconsistent sound quality judgments (similarity 0.79)