厌恶控制的刺激因素：辨别训练后条件性抑制的刺激泛化
STIMULUS ASPECTS OF AVERSIVE CONTROLS: STIMULUS GENERALIZATION OF CONDITIONED SUPPRESSION FOLLOWING DISCRIMINATION TRAINING.
作者信息
HOFFMAN H S, FLESHLER M
出版信息
J Exp Anal Behav. 1964 May;7(3):233-9. doi: 10.1901/jeab.1964.7-233.
Abstract
A tone ending with unavoidable electrical shock was periodically presented to pigeons while they pecked a key for food. A second group of birds was exposed to these tone-shock contingencies and also to a second tone which never ended with shock. The gradient of stimulus generalization following training to a single stimulus was symmetrical, whereas the gradient following discrimination training was asymmetrical, but there was no evidence of peak shift. During testing, suppression to all tones gradually extinguished and in both groups the slope of the gradient increased markedly. A second experiment with the discrimination birds revealed that free shock caused a recovery of the gradient, but the asymmetry persisted.
摘要
当鸽子啄击按键获取食物时，会周期性地呈现一种以不可避免的电击结束的音调。第二组鸟既接触这些音调 - 电击的意外情况，也接触另一种从不以电击结束的音调。对单一刺激进行训练后的刺激泛化梯度是对称的，而辨别训练后的梯度是不对称的，但没有峰值转移的证据。在测试期间，对所有音调的抑制逐渐消失，并且两组中梯度的斜率都显著增加。对接受辨别训练的鸟进行的第二个实验表明，自由电击导致梯度恢复，但不对称性仍然存在。
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