Mild Cognitive Impairment Is Not "Mild" at All in Altered Activation of Episodic Memory Brain Networks: Evidence from ALE Meta-Analysis.

Mild Cognitive Impairment Is Not "Mild" at All in Altered Activation of Episodic Memory Brain Networks: Evidence from ALE Meta-Analysis.
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情景记忆大脑网络激活改变导致轻度认知障碍根本不“轻微”:来自 ALE 荟萃分析的证据

DOI:
10.3389/fnagi.2016.00260
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发表时间:
2016
影响因子:
4.8
通讯作者:
Li R
Li R
中科院分区:
医学2区
文献类型:
--
作者:
Wang P;Li J;Li HJ;Huo L;Li R

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本研究进行了一项定量荟萃分析,旨在评估遗忘型轻度认知障碍(aMCI)个体情景记忆功能神经影像学研究的共识,并阐明一致的激活模式。对截至2015年3月31日发表的aMCI个体的情景编码和提取的功能神经影像学研究进行了激活似然估计(ALE)。分析涵盖了24项研究,产生了770个不同的病灶。与健康对照组相比,aMCI个体在广泛的情景记忆网络中表现出统计学上显著的一致激活差异,不仅在双侧内侧颞叶和前额叶皮层,而且在角回、楔前叶、后扣带皮层,甚至某些更基本的结构中。目前的ALE荟萃分析显示,广泛的情景记忆网络的异常模式表明,患有aMCI的个体在性质上可能不完全是"轻度"的。
The present study conducted a quantitative meta-analysis aiming at assessing consensus across the functional neuroimaging studies of episodic memory in individuals with amnestic mild cognitive impairment (aMCI) and elucidating consistent activation patterns. An activation likelihood estimation (ALE) was conducted on the functional neuroimaging studies of episodic encoding and retrieval in aMCI individuals published up to March 31, 2015. Analyses covered 24 studies, which yielded 770 distinct foci. Compared to healthy controls, aMCI individuals showed statistically significant consistent activation differences in a widespread episodic memory network, not only in the bilateral medial temporal lobe and prefrontal cortex, but also in the angular gyrus, precunes, posterior cingulate cortex, and even certain more basic structures. The present ALE meta-analysis revealed that the abnormal patterns of widespread episodic memory network indicated that individuals with aMCI may not be completely “mild” in nature.
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