Experimental study on thermal sensitivity of Xizang people with asymmetrical dressing at Qinghai-Xizang plateau

The special climate environment of the Qinghai-Xizang plateau has created a special behavioral thermal adaptation mode for the Xizang people. The thermal exposure of Xizang asymmetric dressing leads to its sensitivity to thermal environment stimuli with specificity, which is crucial for overall thermal comfort evaluation. This article conducts the experimental research on human thermal sensitivity for the Xizang people, recruiting 16 Xizang youths as subjects to conduct the experimental studies under three types of thermal environment mutation conditions (operating condition 1:18 ℃-24 ℃-18 ℃, operating condition 2:15 ℃-24 ℃-15 ℃, and operating condition 3:16 ℃-28 ℃-16 ℃). The definition and quantitative formula of thermal sensitivity are proposed, and the physiological heat sensitivity and psychological heat sensitivity are used as evaluation indicators, and thermal sensitivity characteristics are analysed from physiological and psychological perspectives, respectively. The results show that there are local differences in thermal sensitivity among the Xizang people, with the thermal sensitivity sequence being head, limbs, and trunk. Under the asymmetric wearing of Xizang robe, there are obvious differences in thermal sensitivity between exposed parts and non-exposed parts, and the thermal sensitivity of exposed parts is 1.2 to 1.3 times that of non-exposed parts. The human body is more sensitive to cold stimuli, and the thermal sensitivity of the same part to cold stimuli is 0.7 to 1.5 times and 1 to 2 times that of thermal stimuli on the physiological and psychological levels, respectively.