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  • Title: Avoidance behavior and ileum motility post-cingulumotomy in monkey.
    Author: Haller RG, Lockard JS, Foltz EL.
    Journal: Biol Psychiatry; 1976 Apr; 11(2):175-93. PubMed ID: 822886.
    Abstract:
    Two experiments were conducted utilizing rhesus monkeys to determine (i) the effects of cingulumotomy on conditioned-avoidance acquisition and extinction and (ii) the effects of avoidance learning on distal ileum motility in control- and cingulum-lesioned animals. Active (AAR) and passive (PAR) avoidance schedules singly or in combination were employed during short daily periods (less than 2 hr) of "shaping," training, acquisition, and extinction. The data indicated that the control-lesion and cingulum groups did not differ in the acquisition or extinction of an AAR. The cingulum group, however, showed a significant deficit in the acquisition of a PAR and a noticeably slower rate of lever pulling during avoidance trials in the combined avoidance training sessions. The results also suggested that ileum motility and avoidance behavior parallel on another, i.e., if either changed the other often changed in the same direction; that cingulum monkeys seemed to be less "reactive" than control-lesion monkeys; and that cingulum animals may been somewhat more regular in their percent daily motility patterns than the control animals.
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