European Archives of Oto-Rhino-Laryngology, 2026 (SCI-Expanded, Scopus)
Purpose: Our aim was to identify the frequency at which the optimal cervical vestibular evoked myogenic potential (cVEMP) responses were obtained in the older adult group, by comparing tone burst stimuli at 500, 750 and 1000 Hz. Our other aim was to minimise stimulus-induced absence of response. Methods: A total of 60 participants were included in the study. They were divided into two groups of 30: adults aged 18–64 and the older adults aged 65–84. Each participant underwent cVEMP testing after immittance and pure-tone audiometry assessments. The cVEMP results were then compared using tone burst stimuli at 500, 750 and 1000 Hz. Results: A decrease in the cVEMP response rate was observed at 500 Hz in the older adult group. Significant differences were observed in P1 latency, N1 latency and P1–N1 amplitude values at 500, 750 and 1000 Hz, as well as in the amplitude asymmetry ratio at 750 Hz, when the adult and older adult groups were compared (p < 0.05). In the older adult group, significant differences were observed in latency values between 500 Hz and 1000 Hz, and in amplitude values between 500 Hz and 750 Hz, as well as between 500 Hz and 1000 Hz (p < 0.05). Conclusion: Aging brings about changes to the vestibular system. These changes affect the resonance frequency of the vestibular system and manifest as decreased cVEMP response rates, prolonged latencies and reduced amplitude values in older individuals. Therefore, age should be considered when assessing cVEMP responses in older individuals, with higher frequencies such as 750–1000 Hz being used instead of 500 Hz.