Figure 2From: "First pain" in humans: convergent and specific forebrain responses Vertex (Cz) potentials evoked by contact-heat pulses applied to the hairy skin of the left hand. Grand average responses were averaged across subjects after 10 stimuli delivered at 41°C (A) and at 51°C (B). Dotted lines mark the latencies of the major positive peaks (A and B).Back to article page