CS-US temporal relations in blocking
CS-US temporal relations in blocking
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DOI：
10.3758/lb.36.2.92
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发表时间：
2008-05-01
影响因子：
1.8
通讯作者：
Miller, Ralph F.
中科院分区：
文献类型：
--
作者：
Amundson, Jeffrey C.;Miller, Ralph F.
在四个大鼠轨迹条件化实验中，探讨了阻断线索-非条件刺激（US）和阻断线索-US轨迹间隔之间的差异对阻断的影响。实验1表明，尽管封锁线索的具有较短的跟踪间隔比封锁线索在元素（阶段1）和化合物（阶段2）的培训。在实验2中，阻断衰减时，阻断线索有一个更长的跟踪间隔比阻断线索在元素和复合培训。在实验3和4中，在复合训练期间两个线索的踪迹间隔是匹配的（即，与实验I和2不同，两者都没有时间优先级）。阻断衰减时，阻断线索跟踪间隔在元素阶段是短（实验3）或长（实验4）比复合训练期间的复合线索跟踪。研究结果表明，受试者编码刺激间的时间间隔，他们进一步表明，当竞争线索具有相同的时间信息作为美国的线索竞争是最大的。
In four trace-conditioning experiments with rats, the influence on the blocking of differences between the blocking cue-unconditioned stimulus (US) and the blocked cue-US trace intervals was explored. Experiment 1 demonstrated blocking despite the blocked cue's having a shorter trace interval than the blocking cue in both elemental (Phase 1) and compound (Phase 2) training. In Experiment 2, blocking was attenuated when the blocked cue had a longer trace interval than did the blocking cue in both elemental and compound training. In Experiments 3 and 4, the trace intervals of the two cues during compound training were matched (i.e., unlike in Experiments I and 2, neither had temporal priority). Blocking was attenuated when the blocking cue trace interval in the elemental phase was shorter (Experiment 3) or longer (Experiment 4) than the compound cue trace during compound training. The findings indicate that subjects encode interstimulus intervals, and they further suggest that cue competition is greatest when the competing cues have the same temporal information as the US.