7. Gwilym SE, Fillipini N, Douaud G, Carr AJ, Tracey I. Thalamic atrophy associated with painful osteoarthritis of the hip is reversible after arthroplasty; a longitudinal voxel-based-morphometric study. Arthritis Rheum 2010;62:2930--40.
8. Obermann M, Nebel K, Schumann C, Holle D, Gizewski ER, Maschke M, Goadsby PJ, Diener HC, Katsarava Z. Gray matter changes related to chronic posttraumatic headache. Neurology 2009;73:978--83.
9. Rodriguez-Raecke R, Niemeier A, Ihle K, Ruether W, May A. Brain gray matter decrease in chronic pain is the consequence and not the cause of pain. J Neurosci 2009;29:13746--50.
10. Metz AE, Yau HJ, Centeno MV, Apkarian AV, Martina M. Morphological and functional reorganization of rat medial prefrontal cortex in neuropathic pain. Proc Natl Acad Sci USA 2009;106:2423--8.
11. Seminowicz DA, Laferriere AL, Millecamps M, Yu JS, Coderre TJ, Bushnell MC. MRI structural brain changes associated with sensory and emotional function in a rat model of long-term neuropathic pain. Neuroimage 2009;47:1007--14.
12. Koyama, T., McHaffle, J.G., Laurientl, P.J.. & Coghil, R.C. (2005). The Subjective Experience of Pain: Where Expectations Become Reality. PNAS 102(36), 12950-12955.
13. Apkarian AV. Pain perception in relation to emotional learning. Curr Opin Neurobiol 2008;18:464--8.
14. Apkarian AV, Baliki MN, Geha PY. Towards a theory of chronic pain. Prog Neurobiol 2009;87:81--97.
