Assessing recollection and familiarity of similar lures in a behavioral pattern separation task.
Assessing recollection and familiarity of similar lures in a behavioral pattern separation task.
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DOI：
10.1002/hipo.22087
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发表时间：
2013-04
期刊：
影响因子：
3.5
通讯作者：
Yassa, Michael A.
中科院分区：
文献类型：
--
作者：
Kim, Jennifer;Yassa, Michael A.
回忆介导的识别记忆与行为模式分离之间的关系尚不清楚。在两个独立的实验中，我们修改了一个经过充分验证的物体辨别任务，该任务具有先前证明的对神经模式分离的敏感性，并指示评估回忆和熟悉程度。在第一个实验中，我们加入了记住/知道（R/K）判断，在第二个实验中，我们加入了源记忆判断。我们发现，对于标记为“相似”（模式分离）的诱饵，“记住”和正确的源判断都更高，但对于标记为“旧”（模式分离不存在）的诱饵，“记住”和正确的源判断也更高，这表明模式分离任务中的假警报经常由回忆介导。正如人们所预料的那样，“记住”判断和正确的来源决定随着“相似”反应的差异而增加，而随着“旧”反应的相似而增加。这表明，在存在和不存在模式分离的情况下，记忆都可以发生，对类似诱饵的假警报并不仅仅是由熟悉程度驱动的。
The relationship between recollection-mediated recognition memory and behavioral pattern separation is poorly understood. In two separate experiments, we modified a well-validated object discrimination task with previously demonstrated sensitivity to neural pattern separation with instructions to assess recollection and familiarity. In the first experiment, we included a Remember/Know (R/K) judgment, and in the second we included a source memory judgment. We found that both “Remember” and correct source judgments were higher for lures labeled “similar” (where pattern separation is engaged) but also higher on lures called “old” (where pattern separation is absent), suggesting that false alarms in pattern separation tasks are frequently mediated by recollection. As one might expect, “Remember” judgments and correct source decisions increased with greater dissimilarity for “similar” responses and increased with greater similarity for “old” responses. This suggests that recollection can occur in the presence and in the absence of pattern separation and that false alarms to similar lures are not simply driven by familiarity.
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