Age worsens ITD sensitivity only for high-frequency stimulation, not low-frequency.
Evidence
The left four columns of panels of Fig. 1 compare the performance of the four basic tasks (ITD, ILD, TIME , and LEVEL ) between listener groups. For the low-frequency stimulus (the upper row of panels in Fig. 1 ), a one-way analysis of variance indicated a statistically significant effect of listener group in the TIME task only. Subsequent pair-wise comparisons indicated higher thresholds for the ENH and EHI listeners than for the YNH listeners. For the high-frequency stimulus (the lower rows of panels), a significant effect of listener group was found in the ITD, TIME , and LEVEL tasks. These results reflect higher thresholds for EHI than for ENH (ITD task); for ENH and EHI than for YNH (TIME task); and for ENH than for YNH (LEVEL task). The listener-group effect was not significant for the ILD task for either stimulus type. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1064
Categorization
Category: Factual Claims
Related
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- Lateralization performance on ITD and ILD tasks correlates even after age is controlled (similarity 0.84)
- Individual listeners skilled at one lateralization cue tend to excel at others too (similarity 0.84)
- Aging alone can widen frequency difference limens by two to four times (similarity 0.83)
- Age-normal hearing can be less sensitive to intensity than aided impaired hearing (similarity 0.81)
- Interaural time sensitivity declines with aging and remains impaired after corrective surgery (similarity 0.81)
- Age impairs speech understanding, TFS sensitivity, and encoding even in normal-hearing adults (similarity 0.81)
- Frequency discrimination thresholds are 2-4 times worse in older adults with normal audiograms. (similarity 0.81)
- ITD task performance does not share the same inter-individual efficiency factor as temporal-structure tasks. (similarity 0.80)
- ITD sensitivity is not explained by basic temporal-structure processing efficiency. (similarity 0.80)
- Individual ILD sensitivity is largely set by peripheral level-coding efficiency. (similarity 0.80)
- Wearing hearing aids can make users more intensity-sensitive than age-normal hearing peers. (similarity 0.80)
- Peripheral coding efficiency drives lateralization except for low-frequency ITD (similarity 0.80)
- Frequency difference limens for pure tones worsen two to fourfold with age. (similarity 0.80)