Accession Number : AD0756609


Title :   Postirradiation Performance of Miniature Pigs as Modified by Tasks,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : Chaput,R. L. ; Barron,E. L.


Report Date : JUN 1972


Pagination or Media Count : 24


Abstract : The postirradiation performance of miniature pigs trained to work a shuttlebox problem was compared to that of miniature pigs trained to work a visual discrimination problem. The pigs were whole-body exposed to a gamma ray field produced by the AFRRI-TRIGA reactor operated in the pulse mode (incident neutron to gamma ratio of 0.06) and received midline tissue doses to the brain of 1200 to 3300 rads. The major difference in performance occurred during the first 30 minutes after irradiation. At the doses used in this study, discrimination-trained pigs experienced a more severe and prolonged period of early temporary performance decrement than did the shuttlebox-trained pigs. The ED50 or 50 percentile midbrain dose for early performance decrement was calculated to be 1870 and 2380 rads for the discrimination-trained and shuttlebox-trained pigs, respectively. (Author)


Descriptors :   (*RADIATION EFFECTS, *PERFORMANCE(HUMAN)), RADIATION DOSAGE, GAMMA RAYS, PARTIAL BODY IRRADIATION, BRAIN, BEHAVIOR, SWINE, EXPERIMENTAL DATA


Subject Categories : PSYCHOLOGY
      RADIOBIOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE