Poplawsky A, Cohen S L
Department of Psychology, Bloomsburg University of Pennsylvania, PA 17815.
Behav Neural Biol. 1991 Sep;56(2):119-28. doi: 10.1016/0163-1047(91)90560-d.
Albino Sprague-Dawley rats with complete septal lesions and rats with control operations were studied under fixed-ratio (FR) schedules of reinforcement. Both groups were trained for 10 sessions each under FR 10, 20, 40, 60, 80, and 100. In contrast to findings from progressive FR studies and some simple FR studies, septal lesions resulted in lower overall and local response rates along with longer postreinforcement pauses. These effects were especially evident during the FR 100 schedule of reinforcement. A comparison of reinforcement rate as a function of FR size within the context of behavioral economics (i.e., a demand function) indicated that septal lesions did not alter the reward value of food. These findings suggest that responding on FR schedules of reinforcement can be altered by the various procedures used to train rats to reach the terminal value of a reinforcement schedule.
对患有完全中隔损伤的白化斯普拉格-道利大鼠以及接受对照手术的大鼠，在固定比率（FR）强化程序下进行了研究。两组大鼠均在FR 10、20、40、60、80和100的条件下各训练10节次。与渐进式FR研究和一些简单FR研究的结果相反，中隔损伤导致总体和局部反应率降低，同时强化后停顿时间延长。这些效应在FR 100强化程序期间尤为明显。在行为经济学背景下（即需求函数），将强化率作为FR大小的函数进行比较表明，中隔损伤并未改变食物的奖励价值。这些发现表明，用于训练大鼠达到强化程序终值的各种程序可以改变在FR强化程序上的反应。
