Pain sensitivity is inversely related to regional grey matter density in the brain.
Emerson NM, Zeidan F, Lobanov OV, Hadsel MS, Martucci KT, Quevedo AS, Starr CJ, Nahman-Averbuch H, Weissman-Fogel I, Granovsky Y, Yarnitsky D, Coghill RC.
Emerson NM, et al.
Pain. 2014 Mar;155(3):566-573. doi: 10.1016/j.pain.2013.12.004. Epub 2013 Dec 11.
Pain. 2014.
PMID: 24333778
Free PMC article.