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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: J Pain. 2010 Dec 13;12(3):340–351. doi: 10.1016/j.jpain.2010.07.011

Figure 1.

Figure 1

Timeline of procedures during experimental drug sessions. The boxed text represents the procedures (white) and rest breaks (gray) implemented during the study session. The bidirectional arrows between thermal pain and pressure pain indicate that these two procedures were conducted in counterbalanced order. Time estimates for each testing procedure are documented below the timeline.

Adapted from: Fillingim RB, Ness TJ, Glover TL, Campbell CM, Hastie BA, Price DD, Staud R: Morphine responses and experimental pain: Sex differences in side effects and cardiovascular responses but not analgesia. Journal of Pain 6:116-124, 2005.