Temporal determinants of occasion setting in feature-positive discriminations
Temporal determinants of occasion setting in feature-positive discriminations
复制标题
特征积极歧视中场合设置的时间决定因素
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
P. Holland
中科院分区：
文献类型：
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作者：
P. Holland
三个实验研究了大鼠巴甫洛夫特征阳性鉴别（XA+, A−）的习得和转移。为了确定在这些区别中形成的联系的性质，条件反应（CRs）的形式被检查。如果特征X和共同元素A在复合实验中同时开始和结束，则X和食物无条件刺激（US）之间的关联被获得。如果X的发作和/或终止先于A，则X获得了设置对A反应时机的能力，即A仅在xa复合试验中诱发CRs。场合设置是青睐的收购(1)X的发病前的,(2)间隔betweenX和和/或美国相对较长,和(3)终止ofX发生爆发之前,A occasion-setting权力ofX相当特定于:X没有调节反应诱发另一个线索,首先训练,然后熄灭或线索,配合美国只有几次。然而，X确实增强了对另一个相同特征（积极辨别）中常见元素的提示的反应。如果x和A一起终止，那么这种转移比如果x在A开始之前终止要大一些。
Three experiments examined the acquisition and transfer of Pavlovian feature-positive discriminations (XA+, A−) in rat subjects. To identify the nature of the associations formed in those discriminations, the form of the conditioned responses (CRs) was examined. If the feature,X, and common element, A, cues started and ended together onXA compoud trials, associations betweenX and the food unconditioned stimulus (US) were acquired. If the onsets and/or terminations ofX preceded those of A,X acquired the ability to set the occasion for responding to A, that is, A evoked CRs only onXA compound trials. The acquisition of occasion setting was favored when (1) the onset of X preceded that of A, (2) the interval betweenX and A and/or the US was relatively long, and (3) the termination ofX occurred prior to the onset of A. The occasion-setting power ofX was fairly specific to A:X did not modulate responding evoked by another cue that had been first trained and then extinguished or by a cue that had been paired with the US only a few times. However,X did enhance responding to a cue that had been a common element in another, identical feature-positive discrimination. That transfer was somewhat greater if theX and A terminated together than ifX terminated prior to the onset of A. Implications for theories of stimulus control in Pavlovian conditioning are discussed.