Abstract: Objective To observe the thermal thresholds in normal subjects and their relation with gender and site.MethodsThe thresholds of sensation of cold,warm,cold pain and hot pain in 20 healthy subjects were measured at 10 sites of upper limbs with the TSA-Ⅱ Neurosensory Analyzer under the Limits model.ResultsThere was no remarkable differences between the thresholds of sensation of cold and warm,but obvious differences between the sensation of cold pain and hot pain in different skin sites,as well as between the males and females,left and right in some sensation and some sites.ConclusionFor the normal people,there is a certain relationship among thermal threshold and gender or site of body.

Key words: quantitative sensory testing(QST), temperature sensation, thresholds, upper limbs