Relative recency influences object-in-context memory.
Relative recency influences object-in-context memory.
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DOI：
10.1016/j.bbr.2014.12.024
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发表时间：
2015-03-15
影响因子：
2.7
通讯作者：
Robinson, Jasper
中科院分区：
文献类型：
--
作者：
Tam, Shu K. E.;Bonardi, Charlotte;Robinson, Jasper
关键词：
上下文对象实验的结果可能会受到相对新近度的影响。来自两个实验的数据支持了这一建议。这可能会使对象上下文实验结果的解释变得复杂。就如何解决这个问题提出了建议。结果与识别记忆的联想描述一致。在两个实验中，老鼠接受了上下文对象（OIC）任务的训练，其中它们在上下文 x 中预先暴露于对象 A，然后在上下文 y 中暴露于对象 B。在随后的测试中，A 和 B 都出现在上下文 x 或上下文 y 中。通常会看到对先前未与测试上下文配对的对象进行更多探索，这种效果归因于记住在何处遇到对象的能力。然而，在此任务的典型版本中，在测试中遇到对象 A 的频率也比对象 B 的频率低。这正是“相对新近度”（RR）测试中的安排，其中较远呈现的对象比最近经历的对象被探索得更多。 RR 可能会影响 OIC 任务的表现，因为当动物在上下文 y 中进行测试时，RR 会增强 OIC 效果，而当测试在上下文 x 中时，则会屏蔽它。在两个实验中检验了这种可能性，并获得了在上下文 y 中表现优异的证据。讨论了这对识别记忆的理论解释和用于探索它的程序的影响。
Results of object-in-context experiments can be influenced by relative recency. Data from two experiments presented supporting this suggestion. This may complicate interpretation of results of object-in-context experiments. Recommendations are made on how to address this. Results consistent with an associative account of recognition memory. In two experiments rats received training on an object-in-context (OIC) task, in which they received preexposure to object A in context x, followed by exposure to object B in context y. In a subsequent test both A and B are presented in either context x or context y. Usually more exploration is seen of the object that has not previously been paired with the test context, an effect attributed to the ability to remember where an object was encountered. However, in the typical version of this task, object A has also been encountered less recently than object B at test. This is precisely the arrangement in tests of ‘relatively recency’ (RR), in which more remotely presented objects are explored more than objects experienced more recently. RR could contaminate performance on the OIC task, by enhancing the OIC effect when animals are tested in context y, and masking it when the test is in context x. This possibility was examined in two experiments, and evidence for superior performance in context y was obtained. The implications of this for theoretical interpretations of recognition memory and the procedures used to explore it are discussed.
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