Differential patterns of brain connectivity alterations in patients with back pain chronification versus recovery: A...

Area of Science:

• Neuroscience
• Medical Imaging
• Pain Research

Background:

• Chronic back pain is linked to altered brain functional connectivity, particularly in pain modulation and emotion regulation areas.
• Understanding early neural markers can differentiate patients who recover from those who develop chronic pain.

Purpose of the Study:

• To investigate whole-brain functional connectivity dysconnectivity patterns in subacute back pain patients.
• To identify distinct neural signatures that distinguish between recovery and chronification of back pain.

Main Methods:

• Utilized a longitudinal resting-state fMRI dataset from the OpenPain database.
• Applied a voxel-wise dysconnectivity count framework and data-driven clustering.
• Classified patients into recovery and chronic back pain groups based on longitudinal pain scores.

Main Results:

• The chronic back pain group showed greater dysconnectivity in emotion regulation, pain processing, and attentional control regions.
• The recovery group exhibited connectivity deviations in sensorimotor, visual, and cognitive control areas.
• Identified spatially precise, whole-brain signatures of abnormal functional connectivity.

Conclusions:

• Baseline whole-brain dysconnectivity patterns differ significantly between patients who recover and those who develop chronic pain.
• These findings highlight distributed network alterations associated with pain trajectories.
• Provides insights into the neural mechanisms underlying back pain chronification.