Neurogenic Mechanisms in the Evolution of Cerebral Circulatory Insufficiency Investigations on the Role of the Brain Stem Reticular Formation

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Abstract
Investigations were carried out on the action of small amphetamine doses on photic-evoked responses, eeg tracings and blood pressure in controls and in patients with cerebral circulatory insufficiency. In controls the evoked potentials were facilitated, the amplitude of the eeg increased; no changes occurred in blood pressure. In cerebral circulatory insufficiency blood pressure increased, and evoked potentials and eeg remained practically unchanged. It is assumed that in cerebral circulatory insufficiency a functional reorganization of the brain stem reticular formation takes place, with a hyperergic reaction on the part of the structures regulating vascular contractions.