A study has found that there are two separate brain networks related to pain, one for physical pain and one for pain that is linked to thoughts and emotions. This study, in which volunteers controlled the amount of pain they felt with their thoughts, relates to the findings of a study of chronic-back-pain sufferers. The area of brain activity was the same in both groups. "It's a major finding," according to Northwestern University's Dr. Vania Apkarian, who studies pain and brain plasticity. "For the first time, we've established the possibility of modulating pain through two different pathways": http://www.newscientist.com/article/dn26799-brain-signature-of-emotionlinked-pain-is-uncovered.html#.VLgJdCdj_Zs
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