CONTEXTUAL ASSOCIATIONS IN TRACE CONDITIONING
CONTEXTUAL ASSOCIATIONS IN TRACE CONDITIONING
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DOI：
10.3758/bf03209784
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
MARLIN, NA
中科院分区：
文献类型：
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作者：
MARLIN, NA
大鼠给予音调footshock配对0，10-，或30-s的跟踪间隔之间的音调偏移和休克发作。每个跟踪间隔内的一半大鼠进行了测试，通过舔抑制程序的音调的条件性恐惧，其余的大鼠进行了评估，他们的恐惧的背景或上下文线索，通过他们的回避车厢中，条件发生。随着跟踪间隔的增加，观察到音调的条件反射减少。然而，条件性恐惧的背景下增加的痕迹持续时间的增加。更具预测性的刺激，音调，掩盖上下文线索的能力是由音调的时间接近与脚震。需要将当前的理论条件的时间参数进行了讨论。
Rats were given tone-footshock pairings with a 0-, 10-, or 30-s trace interval between tone offset and shock onset. Half the rats within each trace interval were tested for their conditioned fear of the tone through a lick suppression procedure; the remaining rats were evaluated for their fear of the background or contextual cues through their avoidance of the compartment in which conditioning had occurred. Less conditioning was observed to the tone with increasing trace intervals. However, conditioned fear of the context increased with increases in the trace duration. The ability of the more predictive stimulus, the tone, to overshadow the contextual cues was determined by the tone''s temporal contiguity with the footshock. The need to incorporate temporal parameters within current theories of conditioning is discussed.