Dizziness Center, Clinical Neuroscience Center, and Department of Neurology, Seoul National University Bundang Hospital, 173-82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea.
Department of Neurology, College of Medicine, Seoul National University, Seoul, South Korea.
Cerebellum. 2021 Apr;20(2):160-168. doi: 10.1007/s12311-020-01196-6. Epub 2020 Oct 5.
This study aimed to determine the prevalence and mechanism of linear vertigo reported by the patients during the attacks of benign paroxysmal positional vertigo (BPPV). We prospectively evaluated the characteristics (rotational vs. linear) of positional vertigo in 70 patients with posterior and horizontal canal BPPV using a questionnaire allowing multiple choices. In patients with linear vertigo, we further assessed the directionality of linear vertigo. We adopted the velocity-storage model to explain the occurrence and direction of linear vertigo in these patients with BPPV. Patients reported only rotational vertigo in 46 (46/70, 65.7%), only linear vertigo in 10 (14.3%), and both rotational and linear vertigo in 14 (20%). The patients experienced fear from rotational vertigo in 54 (54/70, 77.1%) and from linear vertigo in 20 (20/70, 28.6%). The direction of linear vertigo was concordant with the direction of inertial acceleration predicted by the velocity-storage model. Patients with BPPV may experience linear as well as rotational vertigo during the attacks. This linear vertigo may be ascribed to centrally estimated inertial acceleration.
本研究旨在确定良性阵发性位置性眩晕（BPPV）发作期间患者报告的线性眩晕的患病率和机制。我们前瞻性地评估了 70 例后半规管和水平半规管 BPPV 患者的位置性眩晕特征（旋转性 vs. 线性），采用允许多项选择的问卷进行评估。对于有线性眩晕的患者，我们进一步评估了线性眩晕的方向性。我们采用速度储存模型来解释这些 BPPV 患者线性眩晕的发生和方向。46 例（46/70，65.7%）患者仅报告旋转性眩晕，10 例（10/70，14.3%）患者仅报告线性眩晕，14 例（14/70，20%）患者同时报告旋转性和线性眩晕。54 例（54/70，77.1%）患者因旋转性眩晕而感到恐惧，20 例（20/70，28.6%）患者因线性眩晕而感到恐惧。线性眩晕的方向与速度储存模型预测的惯性加速度方向一致。BPPV 患者在发作期间可能会经历旋转性和线性眩晕。这种线性眩晕可能归因于中枢估计的惯性加速度。
