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Can Narrow Band Chirp Stimulus Shake the Throne of 500 Hz Tone Burst Stimulus for Cervical Vestibular Myogenic Potentials?

Journal of Audiology & Otology 2021년 25권 2호 p.98 ~ 103
Ocal F. Ceyda Akin, Karacayli Ceren, Coban Volkan Kenan, Satar Bulent,
소속 상세정보
 ( Ocal F. Ceyda Akin ) - Gulhane Traning and Research Hospital Department of Otorhinolaryngology
 ( Karacayli Ceren ) - University of Health Sciences Department of Audiology
 ( Coban Volkan Kenan ) - Gulhane Traning and Research Hospital Department of Otorhinolaryngology
 ( Satar Bulent ) - Gulhane Medical School Department of Otorhinolaryngology

Abstract


Background and Objectives: The aim of the study was to compare effects of tone-burst (TB) and narrow-band (NB) Claus Elberling (CE)-chirp stimuli on amplitude, latency and interaural asymmetry ratio (IAR) of cervical vestibular evoked myogenic potentials (cVEMP) in healthy individuals.

Subjects and Methods: The study included 50 healthy volunteers. cVEMP procedure was carried out using 500 Hz TB and NB-CE-chirp stimulus (360-720 Hz, up-chirp) in random order. cVEMP were recorded at 100 dB nHL. For each ear and each stimulus, P1 latency, N1 latency and P1N1 amplitude were measured. IAR was also calculated.

Results: Mean age was 26.66±9.48 years. cVEMP’s in response to both TB and NB CE-chirp stimuli were obtained in all subjects. No statistically significant difference in P1 latency, N1 latency, and P1N1 amplitude was found between the right and left ears for both TB and NB CE-chirp stimuli (p>0.05). In both sides, P1 and N1 latencies were significantly shorter in NB CE-chirp stimulation compared to TB stimulation (p=0.000). In both sides, no statistically significant difference was found in P1N1 amplitude between two types of stimuli (p>0.05).

Conclusions: The chirp stimulus produces robust but earlier cVEMP than TB does. This largest series study on NB chirp cVEMP shows that NB chirp is a good and new reliable alternative.

키워드

Cervical vestibular evoked myogenic potentials; Stimulus; Latency; Amplitude; Vertigo; Vestibular diseases

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