Disrupted default mode network dynamics in recuperative patients of herpes zoster pain.

CNS Neuroscience & Therapeutics
Ying WuMin Yan

Abstract

Previous studies of herpes zoster (HZ) have focused on acute patient manifestations and the most common sequela, postherpetic neuralgia (PHN), both serving to disrupt brain dynamics. Although the majority of such patients gradually recover, without lingering severe pain, little is known about life situations of those who recuperate or the brain dynamics. Our goal was to determine whether default mode network (DMN) dynamics of the recuperative population normalize to the level of healthy individuals. For this purpose, we conducted resting-state functional magnetic resonance imaging (fMRI) studies in 30 patients recuperating from HZ (RHZ group) and 30 healthy controls (HC group). Independent component analysis (ICA) was initially undertaken in both groups to extract DMN components. DMN spatial maps and within-DMN functional connectivity were then compared by group and then correlated with clinical variables. Relative to controls, DMN spatial maps of recuperating patients showed higher connectivity in middle frontal gyrus (MFG), right/left medial temporal regions of cortex (RMTC/LMTC), right parietal lobe, and parahippocampal gyrus. The RHZ (vs HC) group also demonstrated significant augmentation of within-DMN connectivity, includ...Continue Reading

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Software Mentioned

Infomax
Statistical Parametric Mapping ( SPM12 )
SPSS
MATLAB
Group ICA of fMRI Toolbox ( GIFT )
MathWorks
GIFT

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