Osborne B
Physiol Behav. 1986;37(3):499-502. doi: 10.1016/0031-9384(86)90213-1.
The behavioral and corticosterone responses of control rats and rats with fornix transections were examined during eating sessions and when consummatory behavior was blocked but cues controlling the behavior were maintained. Rats with fornix transection exhibited increased frequencies of eating, trips away from the food cup, and exploration, but decreased durations of these behaviors, and differential organization of behavior during eating and blocked eating sessions. Control rats exhibited increased corticosterone levels to blocked eating; fornix transected rats did not. The groups did not differ on basal corticosterone levels or hormonal responses to deprivation, and neither group exhibited conditioned hormonal responses to repeated sampling. The results indicate that control rats, but not rats with fornix transection, respond to the violation of an expectation with increased corticosterone levels.
在进食期间以及当进食行为被阻断但控制该行为的线索仍存在时，对对照组大鼠和穹窿横断大鼠的行为及皮质酮反应进行了检查。穹窿横断大鼠的进食频率、离开食杯的次数和探索行为增加，但这些行为的持续时间减少，且在进食和进食行为被阻断期间行为的组织方式存在差异。对照组大鼠在进食行为被阻断时皮质酮水平升高；穹窿横断大鼠则不然。两组在基础皮质酮水平或对禁食的激素反应上没有差异，且两组均未表现出对重复采样的条件性激素反应。结果表明，对照组大鼠而非穹窿横断大鼠会因预期被违背而出现皮质酮水平升高的反应。
