DeNoble V, Caplan M
J Comp Physiol Psychol. 1977 Feb;91(1):107-19. doi: 10.1037/h0077308.
In two separate experiments, the response rates of rats with septal lesions were compared with those of control rats when response-independent food was presented while subjects were responding on a differential-reinforcement-of-low-rate schedule of reinforcement (Experiment 1) or according to a conjunctive differential-reinforcement-of-high-rate, fixed-ratio schedule (Experiment 2). Free-food deliveries resulted in acceleration of responding of subjects working on the low-rate schedule and in suppression of responding of those animals working on the high-rate schedule. Both of these effects were localized to a brief time period immediately following the free-food deliveries, and baseline rates of responding were not altered. The acceleration and suppression of responding that occurred on the respective schedules were greatly enhanced in rats with septal lesions. This finding supports the suggestion that these animals are hyperreactive to the reinforcing and/or eliciting properties of discrete stimulus events.
在两项独立实验中，当在低比率强化差别强化程序（实验1）或根据联合的高比率、固定比率差别强化程序（实验2）让实验对象做出反应时，给与不依赖反应的食物，将患有隔区损伤的大鼠的反应率与对照大鼠的反应率进行比较。自由提供食物导致按照低比率程序工作的实验对象反应加速，而按照高比率程序工作的那些动物的反应受到抑制。这两种效应都局限于自由提供食物之后紧接着的一段短暂时间内，并且反应的基线率没有改变。在患有隔区损伤的大鼠中，在各自程序上出现的反应加速和抑制大大增强。这一发现支持了这样的观点，即这些动物对离散刺激事件的强化和/或引发特性反应过度。
