Implicit, long-term spatial contextual memory
Implicit, long-term spatial contextual memory
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DOI：
10.1037/0278-7393.29.2.224
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发表时间：
2003-03-01
影响因子：
2.6
通讯作者：
Jiang, YH
中科院分区：
文献类型：
--
作者：
Chun, MM;Jiang, YH
新的空间结构的学习和记忆通过一个称为上下文线索的内隐过程来帮助行为，如视觉搜索（M。M. Chun & Y. Jiang，1998）。本研究对语境线索的内隐性质进行了严格的测试。实验1使用了一个识别测试，密切配合的学习任务，确认预测空间背景的记忆痕迹是不可访问的有意识的检索。实验2给出了明确的指令，在学习过程中编码的视觉上下文，但学习并没有得到改善，意识记忆仍然检测不到。实验3表明，空间背景的记忆痕迹可以持续至少1周，这表明一个长期的上下文线索的组成部分。这些实验表明，在情境线索任务中，空间情境的学习和记忆确实是内隐的。这些结果对于理解空间情境学习的神经基础具有启示意义，空间情境学习可能依赖于包括海马在内的完整的内侧颞叶系统（M。M. Chun & E. A. Phelps，1999）。
Learning and memory of novel spatial configurations aids behaviors such as visual search through an implicit process called contextual cuing (M. M. Chun & Y. Jiang, 1998). The present study provides rigorous tests of the implicit nature of contextual cuing. Experiment 1 used a recognition test that closely matched the learning task, confirming that memory traces of predictive spatial context were not accessible to conscious retrieval. Experiment 2 gave explicit instructions to encode visual context during learning, but learning was not improved and conscious memory remained undetectable. Experiment 3 illustrates that memory traces for spatial context may persist for at least 1 week, suggesting a long-term component of contextual cuing. These experiments indicate that the learning and memory of spatial context in the contextual cuing task are indeed implicit. The results have implications for understanding the neural substrate of spatial contextual learning, which may depend on an intact medial temporal lobe system that includes the hippocampus (M. M. Chun & E. A. Phelps, 1999).