In the area of the lateral recess, the vestibular area ( containing the vestibular nuclei ) and the medullary striae may also be seen.
2.
Any type of focal lesion of the central nervous system ( such as stroke, brain tumor, multiple sclerosis ) will cause the type of ataxia corresponding to the site of the lesion : cerebellar if in the cerebellum, sensory if in the dorsal spinal cord ( and rarely in the thalamus or parietal lobe ), vestibular if in the vestibular system ( including the vestibular areas of the cerebral cortex ).