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1 Assessing Utricle Pathway Function and the Effects of Convergence on Nystagmus in Acute Vestibular NeuritisA 35-year-old woman presented a few days after the onset of room-spinning vertigo. She denied diplopia, dysarthria, dysphagia, dysphonia, incoordination, numbness, and weakness. On examination, she had subtle spontaneous right-beat nystagmus (RBN). This nystagmus increased in amplitude and frequency...Image/MovingImage
2 Upbeat Transitioning to Downbeat Nystagmus in Wernicke's EncephalopathyThis is a 30-year-old man with a history of alcohol abuse who presented to the hospital with inability to walk after several weeks of heavy drinking and malnutrition. While in the hospital, he noted that when he would look straight ahead, everything he saw would appear to be bouncing up and down - a...Image/MovingImage
3 CANVAS (Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome) Video Head Impulse Test (vHIT) FigureCANVAS (Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome) is a genetic condition consisting of slowly progressive late-onset ataxia, bilateral vestibulopathy, sensory neuropathy, chronic cough, and autonomic dysfunction. While the term vestibular areflexia typically implies bilateral...Image
4 Atypical PC BPPV Variant FiguresFigure 1: Atypical posterior canal BPPV variants The labyrinth consists of the cochlea (C), two otolithic organs including utricle (U) and saccule (S), and three semicircular canals including anterior canal (AC), horizontal canal (HC), and posterior canal (PC). A. If otoconia are located within the ...Image
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