[Syndromology of a vascular lesion of the oral regions of the brain stem].

Nineteen patients with a history of circulatory brain disorders in the oral areas of the brain stem showed, along with known neurological syndromes, psychopathological conditions (peduncular hallucinosis, oneiroid and deliriously changed consciousness) and other more rare syndromes (hypersomnia, akinetical states with mutism and intellectual and memory impairment). Apart from describing the clinical picture of these conditions, the pathogenetical mechanisms underlying the syndromes are suggested.