Saka Naoki, Seo Toru, Ohta Shigeto, Sakagami Masafumi
Department of Otolaryngology, Hyogo College of Medicine , Hyogo.
Acta Otolaryngol. 2014 Mar;134(3):233-7. doi: 10.3109/00016489.2013.861925. Epub 2013 Dec 23.
A pulling sensation in the anteroposterior direction is suggested to originate from a dysfunction of the otolith organs.
Previous study with vestibular evoked myogenic potential (VEMP) confirmed that a falling sensation (in an up or down direction) and a lateral tilt sensation (in a right or left direction) were caused by otolith lesions. The purpose of this study was to clarify whether a pulling sensation in the anteroposterior (forward or backward) direction originates from otolith dysfunction.
The otolith function was assessed by cervical and ocular VEMPs (cVEMPs and oVEMPs) in 12 patients who complained of a forward or backward pulling sensation. cVEMPs were evaluated by the asymmetry ratio (AR) of the amplitude of the p13-n23 wave and the peak latencies of the p13 and n23 waves. oVEMPs were evaluated by the AR of the amplitude of the n1-p1 wave and the peak latency of the n1 and p1 waves.
Abnormal ARs on cVEMP were observed in 7 of 12 patients. Nine of 12 patients had abnormal oVEMP results including 3 bilateral absent responses. Most (10 of 12) patients had abnormal cVEMP and/or oVEMP results. The latency of each detected wave was within the normal ranges.
前后方向的牵拉感被认为源于耳石器官功能障碍。
先前关于前庭诱发肌源性电位（VEMP）的研究证实，上下方向的坠落感和左右方向的侧倾感是由耳石病变引起的。本研究的目的是阐明前后（向前或向后）方向的牵拉感是否源于耳石功能障碍。
对12例主诉有向前或向后牵拉感的患者，通过颈肌和眼肌VEMP（cVEMP和oVEMP）评估耳石功能。cVEMP通过p13-n23波幅的不对称率（AR）以及p13和n23波的峰潜伏期进行评估。oVEMP通过n1-p1波幅的AR以及n1和p1波的峰潜伏期进行评估。
12例患者中有7例cVEMP的AR异常。12例患者中有9例oVEMP结果异常，包括3例双侧无反应。大多数（12例中的10例）患者cVEMP和/或oVEMP结果异常。每个检测波的潜伏期均在正常范围内。
