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Distinct thalamocortical network dynamics are associated with the pathophysiology of chronic low back pain
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Distinct thalamocortical network dynamics are associated with the pathophysiology of chronic low back pain
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Journal Article
Distinct thalamocortical network dynamics are associated with the pathophysiology of chronic low back pain
2020
Overview
Thalamocortical dysrhythmia is a key pathology of chronic neuropathic pain, but few studies have investigated thalamocortical networks in chronic low back pain (cLBP) given its non-specific etiology and complexity. Using fMRI, we propose an analytical pipeline to identify abnormal thalamocortical network dynamics in cLBP patients and validate the findings in two independent cohorts. We first identify two reoccurring dynamic connectivity states and their associations with chronic and temporary pain. Further analyses show that cLBP patients have abnormal connectivity between the ventral lateral/posterolateral nucleus (VL/VPL) and postcentral gyrus (PoCG) and between the dorsal/ventral medial nucleus and insula in the less frequent connectivity state, and temporary pain exacerbation alters connectivity between the VL/VPL and PoCG and the default mode network in the more frequent connectivity state. These results extend current findings on thalamocortical dysfunction and dysrhythmia in chronic pain and demonstrate that cLBP pathophysiology and clinical pain intensity are associated with distinct thalamocortical network dynamics.
Thalamocortical dysrhythmia is a key pathology of chronic pain. Here, the authors propose an analytical pipeline to study dynamic fMRI brain networks and demonstrate that chronic low back pain pathophysiology and clinical pain intensity are associated with distinct thalamocortical network dynamics.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Adult
/ Cerebral Cortex - diagnostic imaging
/ Cerebral Cortex - physiopathology
/ Chronic Pain - physiopathology
/ Dynamics
/ Etiology
/ Female
/ Functional magnetic resonance imaging
/ Humanities and Social Sciences
/ Humans
/ Lateral Thalamic Nuclei - diagnostic imaging
/ Lateral Thalamic Nuclei - physiopathology
/ Low Back Pain - physiopathology
/ Male
/ Pain
/ Science
/ Thalamus
/ Ventral Thalamic Nuclei - diagnostic imaging
