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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2019 Apr 23;200:6–13. doi: 10.1016/j.drugalcdep.2019.02.024

Figure 1. Experimental Overview.

Figure 1.

Following consent, subjects completed the Brief Pain Inventory (BPI), and Current Opioid Misuse Measure (COMM). Next, a temperature that corresponded to a 7/10 (‘intense, but tolerable pain’) on self-reported pain intensity was found for each participant. This temperature was used during the functional imaging session. The baseline for all subjects was identical: 32°C. Temperature events during functional imaging had a duration of 14 seconds. Each of the three sessions of thermal stimulation lasted 4 minutes, 28 seconds. There were 8 thermal events per session, for a total of 24 thermal events.