Accession Number : AD0729259


Title :   Behavior and Physiology of the Monkey 'Macaca Mulatta' Following 2500 Rads of Pulsed Mixed Gamma-Neutron Radiation,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : Turbyfill,C. L. ; Roudon,R. M. ; Kieffer,V. A.


Report Date : AUG 1971


Pagination or Media Count : 28


Abstract : Six monkeys, which had been trained to perform a shock motivated visual discrimination task, and which had been surgically implanted to monitor aortic and venous pressures, carotid flow, heart rate and respiratory rate were irradiated with a 2500-rad midline tissue doses of mixed gamma-neutron radiation. Four of the six animals displayed an early performance decrement (less than 90 percent correct responses) within a few minutes following irradiation. One animal showed no performance decrement, and one animal made only five responses and then ceased to perform at all following irradiation. Animals which displayed a performance decrement suffered an acute decrease in aortic pressure. The first physiological indication of the ensuing incapacitation period was a rapid fall of diastolic pressure followed by a decrease in systolic pressure. A second period of behavioral decrement was observed in five of the six animals at approximately 40-45 minutes postirradiation. The respiratory rate was, in general, significantly increased following irradiation. No significant changes were observed in carotid flow or venous pressure. (Author)


Descriptors :   (*WHOLE BODY IRRADIATION, MONKEYS), (*BEHAVIOR, RADIATION EFFECTS), (*PHYSIOLOGY, RADIATION EFFECTS), GAMMA RAYS, NEUTRONS, PULSE RATE, RESPIRATION, BLOOD PRESSURE


Subject Categories : RADIOBIOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE