Truncal ataxia and the vestibulo spinal reflex. A historical review.

The vestibulospinal pathway was described many years ago. Along with it, the vestibulospinal signs that are used for the diagnosis of vestibular disorders were described. In this work we summarize the history of the vestibulospinal pathway, the classic signs and the new signs that can be used in the diagnosis of vestibular disorders, paying special attention to truncal ataxia as a useful element to differentiate central from peripheral pathology.