This video shows classic and robust up-beating and geotropic rotary nystagmus in the right Dix-Hallpike position. Gaze to left reveals the pure up-beating component and gaze to the right reveals the pure rotary component. See the videos in the Ewald’s First Law section for a more detailed demonstration.

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2025年1月2日 · In Benign Paroxysmal Positional Vertigo (BPPV) dizziness and vertigo is triggered by particular positions because of debris which has collected within a part of the inner ear. This debris can be thought of as "ear rocks", although the formal name is " otoconia ".

Vestibular nerve.gif -- show the mechanism of hair cell deflection in the cupula from the endolymphatic fluid from the SCC that happens with head movement. The signal travels along the Vestib nerve to the Vestibular nuclei in the Pons and Medulla, and then on to the Parietal Cortex.

2016年6月24日 · 良性阵发性位置性眩晕（BPPV）是常见的周围性眩晕性疾病之一，作为眩晕的重要鉴别诊断而为神经内科医师所熟知。 BPPV 也称为耳石症，根据耳石部位分为前半规管 BPPV、后半规管 BPPV 和水平半规管 BPPV。 其重要的诊断性手段为 Dix-Hallpike 试验和仰卧位滚转试验。 近期 International Journal of Otolaryngology 杂志发表了一篇由希腊学者 Balatsouras 等撰写的综述，用图表的方式生动地阐述了三种类型 BPPV 发病机制及对应的诊断性试验结果，一起 …

Benign Paroxysmal Positional Vertigo or BPPV is the most common cause of vertigo. Benign: not dangerous or likely to cause lasting effects. Paroxysmal: rapid onset, reaches a peak and then slowly goes away. Positional: triggered by changes in head position. Vertigo: abnormal sensation of movement - world or self.

Benign Paroxysmal Positional Vertigo (BPPV) is a common condition affecting the inner ear balance system. This educational tool shows the common and recommended tests and treatment manoeuvres for BPPV in easy to follow animations. Animations show you how to perform diagnostic tests for the posterior and horizontal canals.

2023年3月30日 · The Dix-Hallpike maneuver is a test that healthcare providers use to diagnose benign paroxysmal positional vertigo (BPPV). BPPV is a common inner ear disorder that causes a sudden spinning sensation when you move your head into certain positions.