30 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 stimulis 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