Accession Number : AD0743679

Title :   Role of the Functional State of the Hypothalamus in Bioelectric Reactions of the Cerebral Cortex to Radiation,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Tokhiyan,S. R.

Report Date : 29 FEB 1972

Pagination or Media Count : 6

Abstract : The effect of subjection of the hypothalamus to electrocoagulation in the area of the mamillary bodies on the bioelectric activity and reactivity of the cerebral cortex exposed to radiation was studied. Rabbits were irradiated on the 10th day after electrocoagulation. Immediately after electrocoagulation, a decline in the excitability and functional activity of cortical neurons in the posterior section of the cortex and a decrease in the amplitude reaction to light were recorded. A slight increase in reactivity and amplitude was briefly recorded on the electrocencephalogram after irradiation. This increase was followed by a sharp decline in the bioelectric activity of the cortex, which continued for a period of 34-35 days. The decline in bioelectric activity of the cerebral cortex was considerably more pronounced in experimental animals than in control to rabbits subjected to radiation only. (Author)

Descriptors :   (*CEREBRAL CORTEX, RADIATION EFFECTS), (*THALAMUS, NERVE IMPULSES), (*NERVE IMPULSES, RADIATION EFFECTS), ELECTROENCEPHALOGRAPHY, BRAIN, CENTRAL NERVOUS SYSTEM, PHYSIOLOGY, PATHOLOGY, USSR

Subject Categories : Radiobiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE