CHANGES IN THE EXCITABILITY OF A MOTOR REFLEX DURING SUMMATION OF THE EFFECT OF SMALL DOSES OF X-RAYS (IZMENENIYA VOZBUDIMOSTI DVIGATELNOGO REFLEKSA PRI SUMMATSII DEISTVIYA MALYKH DOZ RENTGENOVYKH LUCHEI),
Abstract
The investigations show that during multiple summation of a dose on the order of 0.05-0.1 r the changes in excitability of a motor reflex after serial irradiation become less and less, until finally they are no longer detected. Consequently, with an increase in the number of multiple exposures and the magnitude of the total dose the changes in the excitability of a motor reflex not only do not increase, but even decrease. At the same time each irradiation, even by such small doses, evidently leaves a trace that changes the reactance of the organism. To elicit such changes, we intravenously injected a solution of urethane in a dose that would not cause changes in the excitability of the motor reflex in the control animals. These tests were conducted on the 115th day (after 96 exposures) in the first group and on the 136th day (after 114 exposures) in the second group. These tests clearly show that multiple x-radiation with doses on the order of 0.05-0.1 r increase the sensitivity of animals to threshold doses of urethane, which indicates a change in the reactance of the organism.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 14, 1967
- Accession Number
- AD0674042
Entities
People
- Yu. K. Kudritskii
Organizations
- National Air and Space Intelligence Center