Experimental setting for pain threshold measurement.

<p>A thermal probe was placed on the participant's forearm and a fake thermal probe was placed on the forearm of the rubber hand. The participant was instructed to stare at the rubber hand during the pain threshold measurement. The experimenter increased the temperature of the stimulus by 1°C per second. The participant used a remote control in his/her right hand to stop the temperature from increasing any further the moment pain was felt. The temperature was recorded as the pain threshold.