The thalamus subregions in 54 healthy controls (a) and 54
patients with chronic low back pain revealed by probabilistic tractography are
shown. Each color represents one thalamic subregion corresponding to its
cortical region of interest. HC, healthy controls; CLBP, chronic low back pain;
R, right; mm, millimeter. “Z” and “Y” are Montreal
Neurological Institute coordinates, representing axial and coronal views,
respectively.