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Vestibulo masseteric reflex and acoustic masseteric Reflex. Normative data and effects of age and gender

De Natale, ER; Ginatempo, F; Mercante, B; Manca, A; Magnano, I; Ortu, E; Pilurzi, G; ... Deriu, F; + view all (2019) Vestibulo masseteric reflex and acoustic masseteric Reflex. Normative data and effects of age and gender. Clinical Neurophysiology , 130 (9) pp. 1511-1519. 10.1016/j.clinph.2019.05.021. (In press).

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Abstract

Objective To provide normative data for the Vestibulo-Masseteric Reflex (VMR) and Acoustic-Masseteric Reflex (AMR) in healthy subjects, stratified for age and gender. Methods A total of 82 healthy subjects (M:F 43:39, mean age 39.3 ± 18.4 years, range 13–79 years) underwent recording of click-evoked VMR and AMR (0.1 ms duration, 5 Hz frequency) from active masseter muscles. Masseter responses to uni- and bilateral stimulation were recorded in a zygomatic and a mandibular configuration, according to the position of the reference electrode. Stimulation intensity curves were recorded for each reflex in ten subjects (mean age 20.7 ± 8.1 years). Gender effect was investigated in 62 subjects and age effect was analyzed in six 10-subject groups aged from <25 to >65 years. Onset and peak latencies, interpeak intervals, raw and corrected amplitudes, latency and amplitude asymmetries were analyzed. Results VMR had a higher elicitation rate than AMR. For both reflexes, rates of elicitation, and corrected amplitudes were higher in the zygomatic configuration, and bilateral stimulation elicited larger responses. Best acoustic ranges of elicitation were 98–113 dB for AMR and 128–138 dB for VMR. Reflex latencies were shorter in females than males. Frequency and amplitude of VMR and AMR decreased substantially over 55 year olds. Conclusions VMR and AMR can be easily performed in any clinical neurophysiology laboratory. Significance These reflexes can find application in the investigation of brainstem function in central neurological disorders.

Type: Article
Title: Vestibulo masseteric reflex and acoustic masseteric Reflex. Normative data and effects of age and gender
Location: Netherlands
DOI: 10.1016/j.clinph.2019.05.021
Publisher version: https://doi.org/10.1016/j.clinph.2019.05.021
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: VMR, AMR, Vestibular Evoked Myogenic Potentials, masseter VEMP, mVEMP, Brainstem Reflexes, Neurophysiology, Normative values
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Movement Neurosciences
URI: https://discovery.ucl.ac.uk/id/eprint/10078021
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