Weidemann Gabrielle, Kehoe E James
University of New South Wales, Sydney, Australia.
Learn Behav. 2003 Feb;31(1):49-68. doi: 10.3758/bf03195970.
In the present experiments, savings phenomena following a limited amount of initial acquisition and extended extinction were examined. Experiments 1 and 2 compared rates of reacquisition following brief acquisition and various amounts of extinction in conditioning of the rabbit's nictitating membrane and heart rate response, respectively. Experiment 3 compared rates of acquisition to a novel stimulus (e.g., light) following brief acquisition and various amounts of extinction to another stimulus (e.g., tone). In addition, in Experiment 3 recovery of responding to the extinguished stimulus during acquisition to the novel, cross-modal stimulus was examined. Experiments 1, 2, and 3 demonstrated that with a limited number of acquisition trials (1) there was a graded reduction in the rate of reacquisition as a function of the number of extinction trials in both conditioning preparations, (2) there was a graded reduction in the rate of cross-modal acquisition as a function of the number of extinction trials, but (3), in Experiment 3, recovery of responding to the extinguished stimulus during cross-modal training of the novel stimulus appeared uniformly robust even in the face of extended extinction.
在当前实验中，研究了在进行有限次数的初始习得和延长消退之后的节省现象。实验1和实验2分别比较了在兔瞬膜和心率反应条件反射中，短暂习得和不同程度的消退后重新习得的速率。实验3比较了在短暂习得和对另一种刺激（如音调）进行不同程度的消退后，对新刺激（如光）的习得速率。此外，在实验3中，还研究了在对新的跨模态刺激进行习得过程中，对已消退刺激的反应恢复情况。实验1、2和3表明，在有限次数的习得试验中：（1）在两种条件反射实验中，重新习得的速率随着消退试验次数的增加而呈梯度下降；（2）跨模态习得的速率随着消退试验次数的增加而呈梯度下降；但是（3）在实验3中，即使面对延长的消退，在对新刺激进行跨模态训练期间，对已消退刺激的反应恢复似乎始终很强劲。
