Find 10 practical ways to beat pain including relaxation tips, breathing exercises and using telephone helplines. Hum Brain Mapp. Sep;27(9) Neural activity related to self- versus externally generated painful stimuli reveals distinct differences in the lateral pain system in a parametric fMRI study. Helmchen C(1), Mohr C, Erdmann C, Binkofski F, Büchel C. Author information: (1)Neuroimage Nord, Department of Neurology, . Muscle pain in the chest is not always a sign of a heart attack or serious illness. Mostly it is muscular in origin and you can alleviate it yourself.