Differential Effects of Semantic Processing on Memory Encoding
Differential Effects of Semantic Processing on Memory Encoding
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DOI：
10.1002/hbm.20969
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发表时间：
2010-11-01
影响因子：
4.8
通讯作者：
Weber, Bernd
中科院分区：
文献类型：
--
作者：
Fliessbach, Klaus;Buerger, Corinna;Weber, Bernd
更深层次的词汇语义处理导致增强的记忆编码（处理深度效应）。左下前额叶皮层（LIPC）和左海马是已知的参与这种效应，我们测试的假设，不同的语义编码过程的贡献不同的质量记忆编码。在一项使用功能性磁共振成像的记忆实验中，我们比较了三种不同的编码任务：一个非语义的字母表，一个生命决定，我们假设大小比较任务会激活参与物体特征加工的脑区，并且这与成功的记忆编码有关。结果表明，大小比较任务导致了识别记忆，比其他两个任务更好的记忆编码。与生命决策任务一样，它导致LIPC和左侧海马比非语义任务更强的激活。这两个区域也有更强的激活后记住的话比非记忆。尺寸比较任务还导致了左前梭状回的更强激活，这也与成功的记忆编码有关。我们得出结论，不同类型的语义处理影响基于可区分的大脑过程的记忆编码。《脑地图》31：1653-1664，2010年。(C)2010 Wiley-Liss，Inc.
Deeper semantic processing of words leads to enhanced memory encoding (depth of processing effect). The left inferior prefrontal cortex (LIPC) and the left hippocampus are known to be involved in this effect We tested the hypothesis that different semantic encoding processes contribute qualitatively differently to memory encoding. In a memory experiment using functional magnetic resonance imaging, we compared three different encoding tasks: a nonsemantic alphabetical, an animacy decision, and a size comparison tasks Recognition memory was tested subsequently We hypothesized that the size comparison task would activate brain areas involved in the processing of object features and that this would be associated with successful memory encoding Results showed that the size comparison task led to significantly better memory encoding than the two other tasks. As with the animacy decision task, it led to stronger activation of the LIPC and left hippocampus than the nonsemantic task. Both regions also had stronger activations for later remembered than for nonremembered words. The size comparison task additionally led to stronger activation in the left anterior fusiform gyrus, which was also associated with successful memory encoding We conclude that different types of semantic processing affect memory encoding based on distinguishable brain processes. Hum Brain Mapp 31:1653-1664, 2010. (C) 2010 Wiley-Liss, Inc.