[Functional status of the brain stem in cerebral circulatory disorders according to the results of a study of evoked brain-stem auditory potentials].

Patients with various forms of cerebral circulation impairment were examined. The changes of evoked truncal acoustic potentials (ETAP) point to a lesion of the brain stem formations predominantly at a mesencephalic level. It has been shown that ETAP correlate with the neurological symptomatology.