Vertigo and impaired pursuit eye movements in a small medial superior temporal infarction

Abstract : Vertigo may occur in lesions involving the cerebral hemispheric regions such as the insular cortex, retroinsular area and temporo-parietal junction. However, no study has described vertigo and impaired pursuit eye movements as the only findings of supratentorial strokes. We report isolated vertigo and impaired pursuit eye movements to the lesion side in a patient with a small infarction restricted to the deep white matter of left superior temporal gyrus. This report suggests the subcortical location of the fibers to and from the human homologue of parieto-insular vestibular cortex and medial superior temporal (MST) area in monkeys.