Neural activity that predicts subsequent memory and forgetting: A meta-analysis of 74 fMRI studies
Neural activity that predicts subsequent memory and forgetting: A meta-analysis of 74 fMRI studies
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DOI：
10.1016/j.neuroimage.2010.09.045
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发表时间：
2011-02-01
期刊：
影响因子：
5.7
通讯作者：
Kim, Hongkeun
中科院分区：
文献类型：
--
作者：
Kim, Hongkeun
本研究对使用后续记忆方法的功能性MRI研究进行了定量荟萃分析。荟萃分析考虑了后继记忆（SM：记住>遗忘）和后继遗忘（SF：忘记>记住）效应，将数据限制在健康年轻人的视觉信息编码方面。SM效应的meta分析表明，SM效应与左侧额下皮质（IFC）、双侧梭状皮质、双侧海马区、双侧运动前皮质（PMC）和双侧后顶叶皮质（PPC）这5个神经区域最一致。直接比较使用语言和图像材料以及项目记忆和联想记忆任务的研究之间的SM效应产生了三组主要的发现。首先，左侧IFC在语言材料编码过程中表现出比图像材料编码更强的SM效应，而梭状回皮层在图像材料编码过程中表现出比语言材料编码更强的SM效应。第二，在图像材料编码过程中，双侧海马区表现出比语言材料编码更大的SM效应。此外，左侧海马区在图像联想编码和图像项目编码中表现出更大的SM效应。第三，在项目编码过程中，双侧PMC和PPC区域表现出比联想编码更大的SM效应。SF效应的meta分析表明，SF效应主要与默认模式网络区域相关，包括前、后中线皮层、双侧颞顶交界区和双侧额叶上皮层。在任务积极网络和任务消极网络/默认模式网络之间反复出现的活动振荡可能解释了参与者编码表现在试验与试验之间的差异，这是SM和SF效应的基本来源。综上所述，这些发现阐明了支持编码成功的神经活动，以及导致编码失败的神经活动。(C) 2010爱思唯尔公司版权所有。
The present study performed a quantitative meta-analysis of functional MRI studies that used a subsequent memory approach. The meta-analysis considered both subsequent memory (SM; remembered>forgotten) and subsequent forgetting (SF: forgotten>remembered) effects, restricting the data used to that concerning visual information encoding in healthy young adults. The meta-analysis of SM effects indicated that they most consistently associated with five neural regions: left inferior frontal cortex (IFC), bilateral fusiform cortex, bilateral hippocampal formation, bilateral premotor cortex (PMC), and bilateral posterior parietal cortex (PPC). Direct comparisons of the SM effects between the studies using verbal versus pictorial material and item-memory versus associative-memory tasks yielded three main sets of findings. First, the left IFC exhibited greater SM effects during verbal material than pictorial material encoding, whereas the fusiform cortex exhibited greater SM effects during pictorial material rather than verbal material encoding. Second, bilateral hippocampal regions showed greater SM effects during pictorial material encoding compared to verbal material encoding. Furthermore, the left hippocampal region showed greater SM effects during pictorial-associative versus pictorial-item encoding. Third, bilateral PMC and PPC regions, which may support attention during encoding, exhibited greater SM effects during item encoding than during associative encoding. The meta-analysis of SF effects indicated they associated mostly with default-mode network regions, including the anterior and posterior midline cortex, the bilateral temporoparietal junction, and the bilateral superior frontal cortex. Recurrent activity oscillations between the task-positive and task-negative/default-mode networks may account for trial-to-trial variability in participants' encoding performances, which is a fundamental source of both SM and SF effects. Taken together, these findings clarify the neural activity that supports successful encoding, as well as the neural activity that leads to encoding failure. (C) 2010 Elsevier Inc. All rights reserved.