Figure 2: An example of the record for the Method of Level on Warm Detection Threshold. The baseline temperature was set at 32°C. The stimulus temperature increased to 35°C and asked the subject whether or not he/she perceived worm sensations. The answer was yes, then the stimulus temperature decreased to 33.5°C (answer was yes), to 32°C (answer was no), to 32.75°C (answer was yes). The stimuli were continue until step magnitude reached 0.2°C. A total number of trial (10 trials) was record.