Figure 2

Experimental design. A: Overview of the experiment procedure. Two 30 minute QST sessions were performed before and after an 8-minute electroacupuncture stimulation procedure. B: Experimental paradigm of the electroacupuncture (EA) stimulation procedure. EA stimulation blocks preceded button-press cues, which were important for inducing active and passive coping strategies. The AC group was told that EA current intensity would be reduced according to the button press response, while the PC group was told to simply press the button after the cue. C: Body locations for EA stimulation (acupoints ST36 and GB39), and quantitative sensory testing (QST-measurements) on the left leg. n.b. ISI = inter-stimulus interval.