TIME AND CONTEXT EFFECTS ON PERFORMANCE IN A PAVLOVIAN DISCRIMINATION REVERSAL
TIME AND CONTEXT EFFECTS ON PERFORMANCE IN A PAVLOVIAN DISCRIMINATION REVERSAL
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DOI：
10.1037/0097-7403.19.2.165
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发表时间：
1993-04-01
期刊：
影响因子：
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通讯作者：
BROOKS, DC
中科院分区：
文献类型：
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作者：
BOUTON, ME;BROOKS, DC
对大鼠进行的五项条件抑制实验探讨了辨别逆转学习中的保留间隔和情境效应。在辨别阶段，音调（T）与电击配对，单独呈现关灯刺激（L）；反转阶段，T熄灭，L与休克配对。辨别训练使 L 成为潜在抑制物，但不是条件抑制物。逆转后28天的延迟导致自发恢复到T，但对L没有影响。逆转之前的环境切换导致对L的更快调节，但不影响对T的消退。逆转发生后返回到原始环境，在不同的环境中重新抑制对T的抑制和对L的潜在抑制； 21 天后，情境控制仍然很强。在中立环境中的测试表明，每个训练环境都控制着 T 和 L 的表现。记忆检索框架可能会开始整合环境和时间的影响。
Five conditioned suppression experiments with rats explored retention interval and context effects in discrimination reversal learning. In the discrimination phase, a tone (T) was paired with shock, and a houselight-off stimulus (L) was presented alone; in the reversal phase, T was extinguished and L was paired with shock. Discrimination training made L a latent inhibitor but not a conditioned inhibitor. A 28-day delay after the reversal caused spontaneous recovery to T but had no effect on L. A context switch before the reversal caused more rapid conditioning to L but did not affect extinction to T. A return to the original context after the reversal had occurred in a different context renewed suppression to T and latent inhibition to L; contextual control was still strong 21 days later. Tests in a neutral context indicated that each training context controlled performance to T and L. A memory retrieval framework may begin to integrate the effects of context and time.