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NEUROLOGY 1995;45:42-44
© 1995 American Academy of Neurology

Rotational vertigo in embolic stroke of the vestibular and auditory cortices

Th. Brandt, MD, K. Botzel, MD, T. Yousry, MD, M. Dieterich, MD and S. Schulze, MD

Article abstract-We describe the unique case of a woman with embolic infarction within the right middle cerebral artery territory who had nonepileptic rotational vertigo, nausea, and unsteady gait that gradually resolved within a week. A well-demarcated lesion of the posterior insula (homologous to parieto-insular vestibular cortex in monkeys) was probably the cause. This is supported by a contraversive tilt of perceived vertical and by involvement of the adjacent auditory (Heschl's) cortex. Dipole source analysis of late auditory evoked potentials revealed a decreased amplitude of a dipole source in the right insular cortex, whereas two other dipoles situated in the temporal lobe showed symmetric activity.

NEUROLOGY 1995;45: 42-44




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