Dickinson A
J Comp Physiol Psychol. 1975 Feb;88(2):851-61. doi: 10.1037/h0076394.
Effect of septal lesions on suppression of an intermittently food-reinforced lever press by contingent and noncontingent footshock was measured. Rats with septal damage maintained higher response rates than did intact animals under both contingent and noncontingent shock. Furthermore, the difference in suppression produced by the contingent and noncontingent conditions was approximately the same for the experimental and control groups. In a second experiment, performance was measured during counter-conditioning in which the correlation between contingent shock and positive reinforcement was varied. Rats with septal lesions responded at higher rates than did controls. When only reinforced responses were punished, this lesion-induced elevation represented an increase above baseline performance without punishment. This finding suggests that the effect of septal damage on appetitive instrumental performance cannot be due solely to a deficit in response inhibition.
测量了间隔损伤对偶然和非偶然足部电击抑制间歇性食物强化杠杆按压的影响。在偶然和非偶然电击条件下，有间隔损伤的大鼠比完整动物维持更高的反应率。此外，偶然和非偶然条件产生的抑制差异在实验组和对照组中大致相同。在第二个实验中，在反向条件作用期间测量表现，其中偶然电击与正强化之间的相关性是变化的。有间隔损伤的大鼠比对照组反应率更高。当仅对强化反应进行惩罚时，这种损伤引起的升高代表了在无惩罚情况下高于基线表现的增加。这一发现表明，间隔损伤对食欲性工具性表现的影响不能仅归因于反应抑制的缺陷。
