B. Vogt, “Pain and Emotion Interactions in Subregions of the Cingulate Gyrus,” Nat Rev Nsci 6 (2005): 533; K. Ochsner et al., “Your Pain or Mine? Common and Distinct Neural Systems Supporting the Perception of Pain in Self and Other,” SCAN 3 (2008): 144; отсюда взята цитата Окснера.