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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: J Pain. 2017 May 4;18(7):787–799. doi: 10.1016/j.jpain.2017.02.428

Figure 2.

Figure 2

Thermal stimulation task design. During each stimulated clinical interaction thermal stimulation was delivered at three target temperatures (46.5, 47.5, 48.5 °C) to four different skin sites on the forearm. All heat stimuli were 11 seconds in duration, including 7.3 seconds at the target temperature. Each heat trial was preceded by a cue that said “Get Ready!” and all parts of the trial were separated by variable delays. Participants underwent a total of 16 heat trials during each simulated clinical interaction: one trial at each temperature on each of the four skin sites (12 trials), plus a medium heat “washout” stimulus (47.5 °C) delivered to each skin site (4 trials) at the beginning of the thermal stimulation procedure to allow for the initial habituation of the skin site to contact heat. Trial order was randomized.