Accession Number : AD0725829


Title :   Performance of the Monkey Following Two Unequal Pulses of Radiation.


Descriptive Note : Scientific rept.,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : McFarland,W. L. ; Young,R. W.


Report Date : MAY 1971


Pagination or Media Count : 26


Abstract : Ten monkeys housed in primate restraining chairs were trained to criterion performance on a shock avoidance visual discrimination problem. They were then exposed to a 1700-rad pulse of mixed gamma-neutron radiation followed in 6 hours by a 3500-rad pulse. The decrement in performance during the first 20 minutes following the first 1700-rad pulse was equivalent to the decrement in this time period following the first 2500-rad pulse in a previously reported 2500 + 2500-rad multiple exposure study. However, the decrement in performance during the first 20 minutes following the 3500-rad pulse was as great as that in the 20 minutes following the first pulse, in contrast to the 2500 + 2500 group where there was a smaller decrement following the second pulse than after the first pulse. Performance in the entire 2 hours after the second pulse of the 1700 + 3500-rad group was superior to that following a single 5000-rad pulse. (Author)


Descriptors :   (*RADIATION EFFECTS, BEHAVIOR), RADIATION DOSAGE, GAMMA RAYS, NEUTRONS, DOSE RATE, MONKEYS, VISUAL PERCEPTION


Subject Categories : RADIOBIOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE