Publication: Comparisons of masseter evoked myogenic potential (MVEMP) between 500 HZ tone burst and narrowband cechirp (centered at 500 HZ stimuli) in healthy adults
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Date
2025-07
Authors
Rosji, Nurul Anis Nabila
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Abstract
The masseter vestibular evoked myogenic potentials (mVEMP) are a novel
approach in vestibular assessment that has gained growing interest among researchers.
This short-latency biphasic response helps to detect vestibular dysfunctions, involving
the saccule and inferior vestibular nerve. Despite its potential, factors like stimulus
type in mVEMP, remain insufficiently explored. This study aimed to compare
mVEMP responses elicited by 500 Hz tone burst and narrowband CE-Chirp stimuli in
healthy adults. This cross-sectional study recruited 23 healthy adults, with normal
hearing and vestibular functions. The mVEMP responses were recorded using 500 Hz
TB and NB CE-Chirp stimuli at an intensity level of 120 dB peSPL. Each stimulus
was presented twice to obtain an averaged response, and recordings were made from
the masseter muscle to determine P1-N1 amplitude and P1 and N1 latency
components. The NB CE-Chirp produced a significantly larger mean P1-N1 amplitude
(115.05 μV) than that of the 500 Hz TB (100.45 μV) (p = 0.003). The mean P1 latency
(9.13 ms) and mean N1 latency (15.20 ms) were statistically shorter for the NB CEChirp
stimulus compared to those of the 500 Hz TB (15.29 ms and 20.80 ms for P1
and N1 latencies, respectively) (p < 0.05). These results demonstrate a statistically
significant effect of the stimulus type on mVEMP responses. In conclusion, compared
to the 500 Hz TB, the NB CE-Chirp appears to be a more effective stimulus for
eliciting robust mVEMP responses.