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Ear and hearing
2021 Sep/Oct;42 (5): 1373-1380.

Optimizing Ocular Vestibular Evoked Myogenic Potentials With Narrow Band CE-Chirps.

Quentin Mat, Jean-Pierre Duterme, Sophie Tainmont, Christophe Lelubre, Mario Manto
Author Information
  1. Quentin Mat: Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi, Belgium.
  2. Jean-Pierre Duterme: Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi, Belgium.
  3. Sophie Tainmont: Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi, Belgium.
  4. Christophe Lelubre: Faculty of Medicine and Pharmacy, University of Mons (UMons), Mons, Belgium.
  5. Mario Manto: Faculty of Medicine and Pharmacy, University of Mons (UMons), Mons, Belgium.
PMID: 33734171 DOI: 10.1097/AUD.0000000000001031

Abstract

OBJECTIVES: To evaluate the effects of narrow band CE-Chirp (NB CE-Chirp) on the amplitudes and latencies in ocular vestibular evoked myogenic potentials (oVEMPs) at 500 and 1000 Hz in comparison with tone burst (TB).
DESIGN: Twenty-one healthy volunteers were included in the study and tested in air conduction with a "belly-tendon" montage. Recording conditions were randomized for each participant and each modality was tested twice to check the reproducibility of the procedure.
RESULTS: NB CE-Chirps at 500 Hz revealed larger n1-p1 amplitudes than 500 Hz TBs (p = .001), which were also larger than NB CE-Chirps and TBs at 1000 Hz (p = .022, p < .001, respectively). Besides, n1 and p1 latencies were shorter in NB CE-Chirp than in TB at 500 Hz (p < .001) and 1000 Hz (p < .001). The older the participants, the lower the amplitudes (p = .021, p = .031) and the longer the n1 (p = .030, p = .025) and p1 latencies (p < .001, p < .001) in 500 Hz NB CE-Chirps and 500 Hz TBs. Interaural asymmetry ratios were slightly higher in 500 Hz NB CE-Chirps as compared to 500 Hz TBs (p = .013).
CONCLUSIONS: NB CE-Chirps at 500 Hz improved the amplitudes of waveforms in oVEMPs. As for TBs with clicks before, enhancing oVEMPs amplitudes is an essential step to distinguish a healthy person from a patient with either utricular or its related pathways disorder and potentially minimize the risk of cochlear damages. Additional studies including a higher number of healthy participants and patients with vestibular disorders are required to confirm this hypothesis. The large interindividual variability of interaural asymmetry ratios in NB CE-Chirp and in TB at 500 Hz could be explained by the selected montage.

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MeSH Term

Acoustic Stimulation
Cochlea
Hearing
Humans
Reproducibility of Results
Vestibular Evoked Myogenic Potentials
Journal Article Research Support, Non-U.S. Gov't
Article has an altmetric score of 1

Word Cloud

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