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A Systematic Review and Meta-Analysis of the Functional MRI Investigation of Motor Neuron Disease

D. Shen,L. Cui,B. Cui,Jia Fang,Dawei Li,Junfang Ma

Published 2015 in Frontiers in Neurology

ABSTRACT

Background To assess the use of functional magnetic resonance imaging (fMRI) in motor neuron disease (MND), a systematic review and voxelwise meta-analysis of studies comparing brain activity in patients with MND and in healthy controls was conducted to identify common findings across studies. Methods A search for related papers published in English and Chinese was performed in Ovid Medline, Pubmed, and Embase database. Voxelwise meta-analysis was performed using signed differential mapping. Results The findings from 55 fMRI studies on MND were tabulated, and some common findings were discussed in further details. Conclusion These findings are preliminary, sometimes even contradictory, and do not allow a complete understanding of the functional alterations in MND. However, we documented reliable findings that MND is not confined to the motor system, but is a multisystem disorder involving extra-motor cortex areas, causing cognitive dysfunction and deficits in socioemotional and sensory processing pathways.

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