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Exploring Cervical Vestibular Evoked Myogenic Potential Responses to Different Stimuli at Different Frequencies
Ercan Karababa1, Betül Özdemir Aktaş2, F Ceyda Akın Ocalc3
1Department of Audiology, Gulhane Faculty of Health Sciences, University of Health Sciences, Ankara, Turkey, ody.ercan.ek@gmail.com.
Objective:
This study aimed to compare cervical vestibular evoked myogenic potentials (cVEMP) elicited by tone burst (TB) and narrow band level-specific chirp (NB LS-CE Chirp) stimuli at 500, 1,000, 2,000, and 4,000 Hz in healthy individuals.
Methods:
Thirty-two healthy participants (15 females, 17 males; mean age: 24.59 ± 1.93 years) underwent otoscopic examination, pure-tone audiometry, and cVEMP testing at 95 dB nHL using TB and NB LS-CE Chirp stimuli. P1 latency, N1 latency, and P1N1 amplitude were recorded.
Results:
At 500 Hz, both stimuli elicited responses in all subjects. Significant differences in P1 latency, N1 latency, and P1N1 amplitude were found between the stimuli at 500 and 1,000 Hz (p < 0.05). No significant differences were observed at 2,000 and 4,000 Hz (p > 0.05).
Conclusion:
NB LS-CE Chirp stimuli generate larger and earlier cVEMP responses than TB stimuli, particularly at lower frequencies, suggesting higher effectiveness for saccular assessment.
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