Figure 2From: Anticipation of pain enhances the nociceptive transmission and functional connectivity within pain network in ratsThe typical neuronal response elicited by simple laser (A), simple tone (B), and paired tone and laser (C). PSTHs illustrated the average firing rate of a neuron around a stimulus. Time = 0 on the x-axis corresponded to the time of noxious (A, C) or tone (B) stimulus onset.Back to article page