Table 2.

Stimulation protocol

Study	Stimulus location	Stimulus Intensity (°C)	Stimulus duration (seconds)	Trials per subject	Other experimental manipulations
Study1	Arm	44.3, 45.3, 46.3, 47.3, 48.3, 49.3	12.5	97	Cognitive self-regulation intervention to increase or decrease pain
Study2	Arm, Foot	46, 47, 48	11	81	Combination of painful stimuli with heat-predictive visual cues for low, medium, and high pain
Study3	Arm	47, 48, 49	8 and 11	36	Heat stimuli were intermixed with physically and emotionally aversive sound stimuli
Study4	Arm	41.1 - 47.1	10	64	Combination of painful stimuli with heat-predictive auditory cues
Study5	Arm	46, 47, 48	11	48	Combination of painful stimuli with heat-predictive visual cues and with a placebo manipulation
Study6	Leg	48, 49	1.85	70	Combination of painful stimuli with heat-predictive visual cues
Study7	Arm	43.5 - 47.5	10	64	Combination of painful stimuli with intervention for perceived control (making vs. observing cue choice) and expectancy (80% vs. 50% probabilities of low pain)
Study8	Leg	48, 49, 50	1.85	96	Combination of painful stimuli with heat-predictive visual cues and unreinforced social information
Study9	Leg	46, 47, 48	12	30	Combine painful stimuli with neural feedback on suppressing NPS activity
Study10	thumbnail	4, 7 kg/cm2*	6	5	Data collected in the context of a randomized controlled trial, including a psychotherapy treatment, placebo treatment, and treatment-as-usual control group

^*Study 10 delivered pressure rather than thermal stimulation.