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1 Bruns Nystagmus Due o a Cerebellopontine Angle TumorThis is a 15-yo-girl who experienced headache and imbalance leading to an MRI which showed a left sided cerebellopontine angle (CPA) tumor. Because of involvement of the left brainstem/cerebellum (e.g., dysfunction of the neural integrator/gaze holding apparatus) by the CPA mass, there was left-beat...Jerk Nystagmus; Gaze Evoked Nystagmus; Vestibular Nystagmus
2 Impaired Smooth Pursuit and Other Characteristic Ocular Motor Findings in Middle Cerebellar Peduncle StrokeThis is a 50-year-old woman who underwent resection of a left-sided acoustic neuroma, and post-operatively, she had vertigo, binocular diplopia, left hemi-ataxia and severe gait ataxia. MR diffusion weighted imaging demonstrated an acute stroke involving the left middle cerebellar peduncle (MCP) and...Abnormal Pursuit; VOR-HIT Abnormal; Abnormal Alignment; Vestibulocochlear Nerve; OMS Pons; Jerk Nystagmus; Gaze-Evoked Nystagmus; Bruns Nystagmus; Vestibular Nystagmus; Acute Vestibular Syndrome
3 Peripheral (Vestibular) and Central (Gaze-Evoked) Patterns of Nystagmus in a Single PatientA 55-year-old man experienced episodic vertigo and was diagnosed with Meniere's disease affecting the left ear (based on audiograms and his clinical course) about 1 year prior to presentation. About 6 months prior to presentation, intratympanic (IT) gentamicin was injected into the left ear, at whic...Jerk Nystagmus; Vestibular Nystagmus; Bruns; Gaze Evoked Nystagmus; VOR HIT Abnormal
4 Test Your Knowledge - Central and Peripheral Vestibular and Ocular Motor Signs Due to a Large Vestibular SchwannomaWhich of the following is least likely to be the correct localization or etiology given the findings seen in the video? 1) Acute right 8th cranial neuropathy 2) Right-sided vestibular schwannoma 3) Right vestibular nucleus infarction 4) Right anterior inferior cerebellar artery distribution stroke A...Abnormal VOR; Jerk Nystagmus; Vestibular Nystagmus; Gaze Evoked Nystagmus; Bruns Nystagmus; Cerebellar OMS
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