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The Journal of Vestibular Research is a peer-reviewed journal that publishes experimental and observational studies, review papers, and theoretical papers based on current knowledge of the vestibular system, and letters to the Editor.
Authors: Du, Yi | Liu, Xingjian | Ren, Lili | Wu, Nan | Guo, Weiwei | Wu, Ziming | Yang, Shiming
Article Type: Research Article
Abstract: BACKGROUND: Unapparent saccades in video head impulse test (vHIT) are usually present in Meniere’s disease (MD) patients but tend to be ignored by the clinician. The result of vHIT is constantly questioned in MD patients due to a lack of uniform metrics. A more effective indicator is needed for indicating MD’s pathological progress. OBJECTIVES: To get a comprehensive understanding of the nature and usability of saccades in different MD stages. METHODS: 118 patients diagnosed with unilateral MD were recruited in this study. Patient history, audiological examination, caloric test, vHIT were performed. We proposed ‘raw saccades’ to …represent all showed wave peaks behind the head peak and named saccades by their appearance sequence: 1st saccade, 2nd saccade and 3rd saccade. An exploratory saccade analysis was executed to investigate the effectiveness of saccade attributes in identifying MD stages. RESULTS: MD patients have greater detectable 1st saccade than PR score as well as 2nd saccade. The time and velocity of the 1st saccade show high interaural variability (p = 0.028, p = 0.000 respectively). No statistical difference concerning the vHIT gain, PR score and 2nd saccade among stages could be recognized on both affected and contralateral sides. Multiple comparisons show the affected 1st saccade velocity and affected 1st saccade absolute velocity have stage-difference. At late stages (3&4), the affected 1st saccade is manifested as a speed increase, and this measure shows a relatively high correlation with MD stages compared to other vestibular indicators. CONCLUSION: The 1st saccade velocity on the affected side could indicate the MD disease process and severity. Show more
Keywords: PR score, vHIT, Meniere’s disease, caloric test, saccades
DOI: 10.3233/VES-201642
Citation: Journal of Vestibular Research, vol. 32, no. 2, pp. 183-192, 2022
Authors: Faralli, Mario | Ori, Michele | Ricci, Giampietro | Roscini, Mauro | Panichi, Roberto | Pettorossi, Vito Enrico
Article Type: Research Article
Abstract: BACKGROUND: Self-motion misperception has been observed in vestibular patients during asymmetric body oscillations. This misperception is correlated with the patient’s vestibular discomfort. OBJECTIVE: To investigate whether or not self-motion misperception persists in post-ictal patients with Ménière’s disease (MD). METHODS: Twenty-eight MD patients were investigated while in the post-ictal interval. Self-motion perception was studied by examining the displacement of a memorized visual target after sequences of opposite directed fast-slow asymmetric whole body rotations in the dark. The difference in target representation was analyzed and correlated with the Dizziness Handicap Inventory (DHI) score. The vestibulo-ocular reflex (VOR) and …clinical tests for ocular reflex were also evaluated. RESULTS: All MD patients showed a noticeable difference in target representation after asymmetric rotation depending on the direction of the fast/slow rotations. This side difference suggests disruption of motion perception. The DHI score was correlated with the amount of motion misperception. In contrast, VOR and clinical trials were altered in only half of these patients. CONCLUSIONS: Asymmetric rotation reveals disruption of self-motion perception in MD patients during the post-ictal interval, even in the absence of ocular reflex impairment. Motion misperception may cause persistent vestibular discomfort in these patients. Show more
Keywords: Quality of life, ménière’s disease, vertigo, motion perception, rehabilitation
DOI: 10.3233/VES-201520
Citation: Journal of Vestibular Research, vol. 32, no. 2, pp. 193-203, 2022
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