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The moderating role of information processing speed in the relationship between brain remodeling and episodic memory in amnestic mild cognitive impairment
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The moderating role of information processing speed in the relationship between brain remodeling and episodic memory in amnestic mild cognitive impairment
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Journal Article
The moderating role of information processing speed in the relationship between brain remodeling and episodic memory in amnestic mild cognitive impairment
2024
Overview
INTRODUCTION The role of information processing speed (IPS) on relationships between episodic memory (EM) and central remodeling features in amnestic mild cognitive impairment (aMCI) was investigated. METHODS Neuropsychological evaluations and multimodal magnetic resonance imaging were performed on 48 patients diagnosed with aMCI and 50 healthy controls (HC). Moderation models explored the moderating effect of IPS on associations between EM and imaging features at single‐region, connectivity, and network levels. RESULTS IPS significantly enhanced the positive correlations between recall and cortical thickness of left inferior temporal gyrus. IPS also notably amplified negative correlations between recognition and functional connectivity (FC) of left inferior parietal lobe and right occipital, as well as between recall/recognition and nodal clustering coefficient of left anterior cingulate cortex. DISCUSSION IPS functioned as a moderator of associations between recall and neuroimaging metrics at the “single region‐connectivity‐network” level, providing new insights for cognitive rehabilitation in aMCI patients. Highlights aMCI patients exhibited brain functional and structural remodeling alterations. IPS moderated relations between episodic memory and brain remodeling metrics. Therapy targeted at IPS can be considered for improving episodic memory in aMCI.
Publisher
John Wiley and Sons Inc
