Neural correlates of context memory with real-world events
Neural correlates of context memory with real-world events
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DOI：
10.1016/j.neuroimage.2004.01.005
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发表时间：
2004-04-01
期刊：
影响因子：
5.7
通讯作者：
Yamadori, A
中科院分区：
文献类型：
--
作者：
Fujii, T;Suzuki, M;Yamadori, A
几乎没有证据表明事情发生的时间和地点的检索过程存在差异，而这是理解情景记忆的重要因素之一。我们使用正电子发射断层扫描（PET）来识别与在类似于日常生活的实验条件下经历的事件的时间和空间背景记忆相关的神经网络。在 PET 之前，受试者经历了 36 次事件。比赛分为四组，每组九人。受试者在 15 分钟的休息前经历前两组事件，在休息后经历另外两组事件；他们在一个房间经历了第一组和最后一组事件，在另一个房间休息，并在另一个房间经历了第二组和第三组事件。在 PET 过程中，受试者在三种不同的检索任务下接受扫描：时间检索任务、地点检索任务和简单识别任务。结果表明，与简单识别相比，时间和空间的检索与显着不同的区域以及共同区域的活动相关：时间检索与右眶额皮层后部和左顶下小叶有关，地点检索与右顶叶联合皮层、右后扣带回、左中央前回和右小脑的两个区域有关，并且两者都与 右侧额下回。这些发现表明，除了公共区域之外，还存在用于检索时间和空间背景的独特区域。 (C) 2004 Elsevier Inc. 保留所有权利。
There has been little evidence for the difference in the retrieval processes of when and where something happened, one of the important factors in understanding episodic memory. We used positron emission tomography (PET) to identify the neural networks associated with temporal and spatial context memory of events experienced under experimental conditions similar to those of everyday life. Before PET, subjects experienced 36 events. The events were divided into four groups of nine each. The subjects experienced the first two groups of events before a 15-min recess and the other two after the recess; they experienced the first and last groups of events in one room, took a recess in another room, and experienced the second and third groups in a different room. During PET, the subjects were scanned under three different retrieval tasks: a time-retrieval task, a place-retrieval task, and a simple recognition task. The results showed that the retrieval of time and space, compared with the simple recognition, was associated with activity in substantially different regions as well as a common region: time retrieval with the posterior part of the right orbitofrontal cortex and left inferior parietal lobule, place retrieval with two regions in right parietal association cortex, right posterior cingulate gyrus, left precentral gyros, and right cerebellum, and both with the right inferior frontal gyrus. These findings indicate that there are unique areas, in addition to a common area, for retrieving temporal and spatial context. (C) 2004 Elsevier Inc. All rights reserved.