Comment on

• Empathy for pain involves the affective but not sensory components of pain.

  Singer T, Seymour B, O'Doherty J, Kaube H, Dolan RJ, Frith CD. Singer T, et al. Science. 2004 Feb 20;303(5661):1157-62. doi: 10.1126/science.1093535. Science. 2004. PMID: 14976305
• Placebo-induced changes in FMRI in the anticipation and experience of pain.

  Wager TD, Rilling JK, Smith EE, Sokolik A, Casey KL, Davidson RJ, Kosslyn SM, Rose RM, Cohen JD. Wager TD, et al. Science. 2004 Feb 20;303(5661):1162-7. doi: 10.1126/science.1093065. Science. 2004. PMID: 14976306 Clinical Trial.