Evidence Missed: Ocular Vestibular-Evoked Myogenic Potential and Cervical Vestibular-Evoked Myogenic Potential Differentiate Utricular from Saccular Function

摘要

Welgampola and Carey have missed evidence that shows how utricular and saccular function can be differentiated, and here the authors note that evidence and report a new result that further substantiates the differentiation.The recent commentary by Welgampola and Carey has missed evidence that has already been published. There is a wealth of evidence that the cervical vestibular-evoked myogenic potential (cVEMPs) to bone-conducted vibration (BCV) and air-conducted sound (ACS) is due to the ipsilateral saccular macula, afferents from which course predominantly in the inferior vestibular nerve (see Curthoys for a review of the anatomy, physiology, and clinical evidence and predictions of patient responses). Recently, we tested the origin of a new VEMP: the n10 component of the ocular vestibular-evoked myogenic potential (oVEMP), which is a crossed otolith-ocular response, by studying patients with deficits of the superior vestibular nerve (SVN).