Topic: Temporal summation of second pain

Temporal summation of second pain (TSSP), is thought to reflect central sensitization, a process linked to pain chronification. Lately, one study has shown how "affective touch" ('AT') is able to lower the pain sensation during TSSP, but the neural underpinnings of such interaction are still unknown. In the present EEG study, participants went through three conditions where a TSSP protocol was applied in concomitance with discriminative touch ('DT'), 'AT' or no tactile stimulation ('NoT'). Heat stimuli were delivered via a thermode attached to the dorsal side of the right wrist, while tactile