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🪵 The Threshold

Sensitivity to interaural phase difference declines measurably by middle age.

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tagsja-picks, factual_claims, singleton, xref, category/factual-claims

2 min read

Sensitivity to interaural phase difference declines measurably by middle age.

Evidence

Thresholds for the LEVEL task also tended to be higher in the elderly than the young, consistently with previous finding (e.g., He et al. 1998 ). Despite these consistent declines in the performance of the monaural tasks with age, the present study failed to find significant age effect in the lateralization tasks (ITD and ILD ). The thresholds for the ILD and LEVEL tasks correlated for both the lowand high-frequency stimuli. This confirms the results of our earlier study (Ochi et al. 2014 ), suggesting that the efficiency of level coding in the auditory periphery is a major factor accounting for inter-individual variation of ILD sensitivity. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1078 (#corroborates, via linked claim)

Moore et al. ( 2012 ) tested 35 subjects with audiometric thresholds ≤ 20 dB HL from 0.25 to 6 kHz and ages from 22 to 61 years. The TFS-LF test was used at center frequencies of 500 and 850 Hz. There were significant correlations between age and IPD thresholds at both 500 Hz (r = 0.37) and 850 Hz (r = 0.65). Scores on the TFS-LF task were not significantly correlated with absolute thresholds at the test frequency. These results confirm those of Ross et al. ( 2007 ) and Grose and Mamo ( 2010 ), and indicate that the decline in sensitivity to binaural TFS with increasing age is already apparent by middle age. — Dijk, Pim van, Physiology, Psychoacoustics and…, 793 (#corroborates, via linked claim)

Categorization

  • XREF: connects to: Binaural temporal fine structure sensitivity declines by middle age independently of hearing thresholds — Dijk, Pim van, Physiology, Psychoacoustics and…, 1078; Interaural time sensitivity declines with aging and remains impaired after corrective surgery — Dijk, Pim van, Physiology, Psychoacoustics and…, 2949; Aging degrades envelope-based binaural phase discrimination independent of hearing loss — Dijk, Pim van, Physiology, Psychoacoustics and…, 809 (+5 more)

Broader Connections

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