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Increased interhemispheric resting-state functional connectivity in paroxysmal kinesigenic dyskinesia: a resting-state fMRI study.

Abstract：

PURPOSE:Paroxysmal kinesigenic dyskinesia (PKD) is a rare movement disorder. The underlying neural mechanisms have not been fully understood. This study aimed to examine the alteration of resting-state functional connectivity (RSFC) between interhemispheric homotopic regions in PKD using a technique called "voxel-mirrored homotopic connectivity" (VMHC). METHODS:The VMHC analysis was performed on resting-state functional MRI data from 11 PKD patients and 17 age and gender matched healthy subjects. Comparison between the two groups was conducted. The correlation relationship between VMHC and illness duration was analyzed. RESULTS:Compared with healthy subjects, PKD patients showed increased interhemispheric RSFC in bilateral putamen, primary motor cortex, supplementary motor area, dorsal lateral prefrontal cortex, primary somatosensory cortex, superior and middle occipital gyri, as well as cerebellar tonsil. Besides, negative correlation was detected between illness duration and VMHC in bilateral putamen and the insular cortex. CONCLUSION:The present study provided preliminary evidence of increased interhemispheric RSFC in PKD mainly in the basal ganglia-thalamo-cortical circuitry and cerebellum. A negative correlation between VMHC and illness duration was also detected. These findings could further enhance our understandings of the pathophysiology of PKD.

journal_name

J Neurol Sci

journal_title

Journal of the neurological sciences

authors

Ren J,Lei D,Yang T,An D,Xiao F,Li L,Huang X,Gong Q,Zhou D

doi

10.1016/j.jns.2015.02.046

subject

Has Abstract

pub_date

2015-04-15 00:00:00

pages

93-98

issue

1-2

eissn

0022-510X

issn

1878-5883

pii

S0022-510X(15)00126-4

journal_volume

351

pub_type

杂志文章

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