[Long- and short-term changes in engorgement in the cerebral vessels under rhythmic photic stimulation].
In 50 patients with cerebrovascular pathology, the EEG and REG were simultaneously recorded during an increase in the cerebral blood volume in response to rhythmic photostimulation. General, local, and short-term reactions of increased cerebral blood volume could be distinguished. The relationship between the EEG changes and cerebral blood volume was most obvious during the short-term reactions: EEG-desynchronization was always followed by increased blood volume. This suggests a possible neurogenic element in vascular reactions. Cerebrovascular pathology was concluded to affect both the neurogenic and the metabolic components of the regulatory mechanism of local circulation.
D001810:Blood Volume; D001921:Brain / Q000098:blood supply; D002536:Cerebral Arteries / Q000503:physiopathology*; D002560:Cerebrovascular Circulation; D003344:Cortical Synchronization; D004569:Electroencephalography; D006801:Humans; D006940:Hyperemia / Q000503:physiopathology; D002532:Intracranial Aneurysm / Q000503:physiopathology; D002537:Intracranial Arteriosclerosis / Q000503:physiopathology; D002538:Intracranial Arteriovenous Malformations / Q000503:physiopathology; D002542:Intracranial Embolism and Thrombosis / Q000503:physiopathology; D010507:Periodicity; D010775:Photic Stimulation; D010992:Plethysmography, Impedance; D011930:Reaction Time; D013997:Time Factors
O dlitel'nykh i kratkovremennykh izmeneniiakh krovenapolneniia tserebral'nykh sosudov pri ritmicheskoĭ svetovoĭ stimuliatsii