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Occipital cortical gyrification reductions associate with decreased functional connectivity in amyotrophic lateral sclerosis.

Abstract：

:Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by progressive muscular weakness and atrophy. Several morphometric studies have been conducted to investigate the gray matter volume or thickness changes in ALS, whereas the cortical folding pattern remains poorly understood. In the present study, we applied a surface-based local gyrification index (LGI) from high resolution MRI data to quantify the cortical folding in matched samples of 25 ALS patients versus 25 healthy controls. Using resting-state fMRI data, we further conducted seed-based functional connectivity analysis to explore the functional correlate of the cortical folding changes. We found that ALS patients had significantly reduced LGI in right occipital cortex and that abnormality in this region associated with decreased functional connectivity in the bilateral precuneus. This set of findings was speculated to result from disturbed white matter connectivity in ALS. In the patient group, we revealed significant negative correlations between disease duration and the LGIs of a cluster in the left superior frontal gyrus, which may reflect the cognitive deterioration in ALS. In summary, our results suggest that LGI may provide a useful means to assess ALS-related neurodegeneration and to study the pathophysiology of ALS.

journal_name

Brain Imaging Behav

journal_title

Brain imaging and behavior

authors

Zhang Y,Fang T,Wang Y,Guo X,Alarefi A,Wang J,Jiang T,Zhang J

doi

10.1007/s11682-015-9499-9

subject

Has Abstract

pub_date

2017-02-01 00:00:00

pages

1-7

issue

1

eissn

1931-7557

issn

1931-7565

pii

10.1007/s11682-015-9499-9

journal_volume

11

pub_type

杂志文章

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