Revista de Fonética e Audiologia
Acesso livre
ISSN: 2471-9455
ISSN: 2471-9455
Vishnuram B
The vestibular-evoked myogenic potential (VEMP) is a technique based on residual acoustic sensitivity of the sacculues, which, during the course of its evolution, functioned as an organ of hearing and still does so in primitive vertebrates. Sound-evoked vestibular responses in humans were described by Von Békésy who, using intense sounds of 128 to 134 db, evoked head movement toward the stimulated ear. These studies suggest the utility of the mVEMP as tools in the assessment of brainstem function. However, unlike cVEMPs and oVEMPs, normative data for mVEMP is lacking, and this limits their potential use in clinical settings. Consequently this study proposed to: 1) To find the normative(peak latency and asymmetric) for mVEMP using Tone burst and Clicks 2) To find the gender difference in mVEMP Methodology: Subject: A total of 40 healthy subjects (20 females and 20 males; mean age 22 ± 2 years, range 18-24 years) Results: The latencies of p11 and n21, peak-to-peak p11-n21 amplitude, and VAR of Tone Burst VEMP in healthy individuals were 12.13 ± 0.81 ms (mean ± SD), 22.54 ± 1.30 ms, 198.53 ± 64.64 μV, and 0.13 ± 0.12, respectively. The latencies of p11 and n21, peak-to-peak p11-n21 amplitude and VAR of m-VEMP in healthy individuals were 11.45 ± 0.87 ms, 21.85 ± 1.65 ms, 81.23 ± 32.56 μV and 0.2 ± 0.13, respectively.