The oldest simulated hearing impairment amplifies forward masking effects most

Evidence

Figure 2b shows the difference between SRT in the dip and constant conditions; that is, ΔSRT relative to the constant condition. It provides a measure of the amount of any forward masking. A one-way ANOVA was performed to confirm the effect of hearing impairment simulation (F (2, 29) = 6.14, p = 0.0063). A multiple comparisons test (Tukey-Kramer HSD) showed that ΔSRT in the 80 year 0 % condition was significantly greater than in the 80 year 100 % condition, or the NH ‑30 dB condition (α= 0.05). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4087

Categorization

Category: Factual Claims

• QUESTION: Why does the 80-year, 0% condition show the largest dip-constant gap? Could indicate aged cochlear compression interacts with temporal masking.

Related

• An aged auditory profile without compression shows the largest forward masking effect (similarity 0.95)
• Absent compression produces more forward masking than strong compression (similarity 0.83)
• Target syllables flanked by loud neighbors suffer forward masking within 100 ms (similarity 0.81)
• Hearing-impairment simulators can independently manipulate age-related audiogram loss and compression loss (similarity 0.81)
• Simulated hearing loss via masking preserves temporal integration, unlike real loss (similarity 0.81)
• Sounds mask both preceding and following sounds in time (similarity 0.81)
• Simulated hearing loss is capped at an 80-year-old’s average audiogram (similarity 0.81)
• Forward masking decay slows markedly after masker offset in hearing loss (similarity 0.81)
• Forward masking persists up to 200 ms after the masker ends (similarity 0.81)
• Forward masking operates centrally on auditory nerve firing patterns (similarity 0.80)
• Masking grows slower in compressive than non-compressive auditory systems, generalizing to speech (similarity 0.80)
• Listener age worsens masked speech recognition even with equal sensation levels (similarity 0.80)
• Hearing-impaired listeners in these tests had moderate symmetric sloping losses (similarity 0.79)
• Forward masking reveals how the ear’s perceptual representation of sound decays over time (similarity 0.79)
• Binaural masking level differences shrink 2-4 dB with age at normal hearing thresholds (similarity 0.79)