Teaching Video NeuroImages: Macrosaccadic oscillations induced by horizontal head impulses
A 33-year-old woman experienced chronic dizziness for 2 years. Examination disclosed gaze-evoked nystagmus and hypermetric saccades. Macrosaccadic oscillations (MSOs) were induced by a gaze shift and horizontal head impulses (video at Neurology.org). Brain MRI demonstrated a large (3.8 x 3.9 x 5.3 cm3) epidermoid cyst at the fourth ventricle that compresses the brainstem and cerebellum (figure).
Source: Neurology - Category: Neurology Authors: Choi, S.-Y., Choi, Y. J., Choi, J.-H., Choi, K.-D. Tags: MRI, Clinical neurology examination, Ocular motility, Vertigo, Primary brain tumor RESIDENT AND FELLOW SECTION Source Type: research
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