Gender, BMI and side-to-side differences in spinal accessory nerve conduction from the upper and middle components of the trapezius muscle

Cleavenger, Anne; Dean, Helen; Foster, Rachel A.; George, K. C.; Hotle, Bethany; Lewis, Keith P.; Stickler, Ashley B.; Thomas, Michelle; Galloway, Kathleen

doi:10.1016/j.jbmt.2019.04.009

Cited by 1 publication

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other than the X cranial nerve, the vestibular portion of the VIII cranial nerve was the only one of 13 peripheral nerves to show a sex difference in a morphometric comparison (Moriyama et al, 2016). However, the XI cranial nerve, which innervates the sternocleidomastoid, was not included in the morphometric comparison, and on available data can only be evaluated for sex difference using a conduction study (Cleavenger et al, 2019). Latencies were assessed between the C7 spinous process and the trapezius muscle, in which the XI cranial nerve terminates after branching to the sternocleidomastoid.…”

Section: Possible Causation Affecting the Vestibulo-collic Reflex Arcmentioning

confidence: 99%

Sexual Dimorphism in VEMP peak to trough Latency

Gattie

Lieven

Kluk

2023

Preprint

View full text Add to dashboard Cite

The cervical vestibular-evoked myogenic potential (VEMP) was assessed in 24 women and 24 men having a mean age of 19.5 years (SD 0.7). Whilst there was no group difference in VEMP peak to trough (p1-n1) amplitude, VEMP p1-n1 latency was found to be shorter for women than for men by 2.4 ms (95% CI [-0.9, -3.9], chi squared (1) 9.6, p = 0.0020). This equates to 21% of the mean 11.4 ms VEMP p1-n1 latency across women and men. It is a reversal of findings in several prior studies, which are reviewed here. Statistical modelling based on the current study suggests some prior studies were underpowered to detect a sex difference in VEMP latency. Possible causes for sex difference in VEMPs are discussed. Candidate explanations include head resonance, superposition of motor unit action potentials and influence of sex hormones. These explanations are not mutually exclusive, and multiple factors may contribute to difference in VEMP measurement between women and men. This study used a methodology developed in Gattie et al. (2021), which addresses sound exposure concerns with the high amplitude air conducted stimuli necessary to evoke a VEMP response. It is suggested that body conducted stimuli may be preferable for VEMP testing in which ear-specific information is not required.

show abstract

Section: Possible Causation Affecting the Vestibulo-collic Reflex Arcmentioning

confidence: 99%