Neuroimaging Correlates of Pain in Parkinson's Disease: A Systematic Review of Structural and Resting-State fMRI Studies.
Chronic pain is a common non-motor symptom in Parkinson's disease (PD), but its central neural mechanisms are not fully understood. Structural and resting-state functional MRI offer non-invasive insights into brain structural and functional correlates of pain. This systematic review synthesizes neuroimaging evidence on...