The Journal of laryngology and otology · 2026
Travelling wave delay of the basilar membrane in age-related hearing loss.
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Bozkurt Hatice Kübra, Karaçaylı Ceren, Satar Bülent, Karababa Ercan, Şen Deniz
Аннотация
OBJECTIVE: To examine the effects of age and hearing loss on travelling wave delay by comparing frequency-specific action potential latencies obtained with electrocochleography.
METHODS: A cross-sectional design was applied. Tympanic membrane electrocochleography recordings at 0.5 and 4 kHz were analysed in 85 ears from 49 adults. Participants were divided into four groups: older adults with hearing loss (n = 22), older adults with normal hearing (n = 18), younger adults with hearing loss (n = 19) and younger adults with normal hearing (n = 26).
RESULTS: Age and hearing loss significantly influenced action potential latencies. At 0.5 kHz, the older adults with hearing loss showed the longest latencies (p < 0.001). At 4 kHz, older adults with hearing loss differed from older adults with normal hearing (p = 0.027). Travelling wave delay varied across groups (p < 0.001), with the shortest travelling wave delay in younger adults with normal hearing and the longest travelling wave delay in older adults with hearing loss.
CONCLUSION: Ageing and hearing loss slow travelling wave velocity, providing an indirect but sensitive marker of early cochlear transmission deficits.
METHODS: A cross-sectional design was applied. Tympanic membrane electrocochleography recordings at 0.5 and 4 kHz were analysed in 85 ears from 49 adults. Participants were divided into four groups: older adults with hearing loss (n = 22), older adults with normal hearing (n = 18), younger adults with hearing loss (n = 19) and younger adults with normal hearing (n = 26).
RESULTS: Age and hearing loss significantly influenced action potential latencies. At 0.5 kHz, the older adults with hearing loss showed the longest latencies (p < 0.001). At 4 kHz, older adults with hearing loss differed from older adults with normal hearing (p = 0.027). Travelling wave delay varied across groups (p < 0.001), with the shortest travelling wave delay in younger adults with normal hearing and the longest travelling wave delay in older adults with hearing loss.
CONCLUSION: Ageing and hearing loss slow travelling wave velocity, providing an indirect but sensitive marker of early cochlear transmission deficits.