65 By ANT

1.Study introduction: In this experiment, participants were initially exposed to a series of laser stimulations of varying intensities. Researchers identified the energy intensity corresponding to an average rating of 7 from the participants. Subsequently, each participant underwent 30 laser stimuli and provided verbal pain ratings one by one. The pain ratings were on a scale where 0 indicated no sensation at all, 4 indicated the onset of pain, 6 represented moderate pain, 8 indicated severe pain, and 10 denoted unbearable pain. 2.Participant task information(description of the experiment): Participants underwent laser stimulation and subsequently verbally rated the intensity of pain. 3.Participant instructions(as exact as possible): Participants were instructed to focus on the laser stimulation, keep their eyes open, and fix their gaze on the crosshairs displayed on the screen. After each laser stimulation, there is a five-second pause. Participants then rated the intensity of the pain. Subsequent trials began at random 5 seconds after the score was provided. 4.References and links: None 5.Comment: All laser markers are delayed by 100ms