When shared pain is not half the pain: enhanced central nervous system processing and verbal reports of pain in the presence of a solicitous spouse.

The site of the maximal group difference for the significant painful stimulation at the back was limited to the frontocentral region (ANOVA groups × electrodes × site: F(4,112) = 2.7, P = 0.03) (Figure 3 ), with a small cluster around Cz and Fz showing highly significant differences between groups and conditions (all P < 0.01).

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