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Variability in participants’ ratings of the highest level of stimulation used in the innocuous warmth discrimination task (max. 43.0 °C) and the lowest level of stimulation used in the nociceptive pain discrimination task (always 45.0 °C). Overall, the lowest level of noxious heat was perceived as more painful than the highest level of innocuous warmth. However, perception of these stimuli varied both (a) between participants and (b) between trials.
