DIFFERENTIAL-EFFECTS OF REINFORCEMENT OF AN INHIBITORY FEATURE AFTER SERIAL AND SIMULTANEOUS FEATURE NEGATIVE DISCRIMINATION-TRAINING
DIFFERENTIAL-EFFECTS OF REINFORCEMENT OF AN INHIBITORY FEATURE AFTER SERIAL AND SIMULTANEOUS FEATURE NEGATIVE DISCRIMINATION-TRAINING
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DOI：
10.1037/0097-7403.10.4.461
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发表时间：
1984-01-01
期刊：
影响因子：
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通讯作者：
HOLLAND, PC
中科院分区：
文献类型：
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作者：
HOLLAND, PC
对大鼠受试者使用条件抑制程序的两项实验发现，抑制特征刺激 (X) 的后处理强化具有显着不同的效果，具体取决于是否使用串行 (A+, X.fwdarw. A-)（A 是第二个刺激）或同时 (A+, AX-) 特征负辨别程序来建立抑制。通过同步过程，当 X 与电击配对时，先前抑制性 X 的兴奋获得被延迟。随后的求和测试表明，在强化 X 呈现后，没有证据表明对 X 有抑制作用。对 X 的激励获取不受先前的串行特征负训练的影响，并且 X 冲击配对对求和测试中 X 的抑制能力影响相对较小。在特征消极辨别中建立的抑制性质显然根据刺激的时间安排而有很大不同。一种可能性是，使用同时刺激安排建立的抑制剂通过作用于无条件刺激的表示来调节行为，而使用串行程序建立的抑制剂则作用于特定的条件刺激-非条件刺激关联。
Two experiments using a conditioned suppression procedure with rat subjects found that postconditioning reinforcement of an inhibitory feature stimulus (X) had substantially different effects depending on whether a serial (A+, X .fwdarw. A-) (A is a 2nd stimulus) or a simultaneous (A+, AX-) feature negative discrimination procedure was used to establish the inhibition. With the simultaneous procedure, acquisition of excitation to the previously inhibitory X was retarded when X was paired with shock. Subsequent summation tests showed no evidence of inhibition to X after reinforced X presentations. Acquisition of excitation to X was unaffected by prior serial feature negative training, and X-shock pairings had relatively little effect on X''s inhibitory power in summation tests. The nature of inhibition established in feature negative discriminations evidently differs substantially depending on the temporal arrangement of stimuli. One possibility is that inhibitors established using simultaneous stimulus arrangements modulate behavior by acting on a representation of the unconditioned stimulus but inhibitors established with serial procedures act on particular conditioned stimulus-unconditioned stimulus associations.