Experimental evidence suggests that high temperatures affect cognitive performance;however,there are limited quantitative models available to evaluate or predict this effect.In previous studies,the authors proposed a ...Experimental evidence suggests that high temperatures affect cognitive performance;however,there are limited quantitative models available to evaluate or predict this effect.In previous studies,the authors proposed a thermal stress comprehensive index(TSCI),which reflects the coupling of physiological and psychological parameters.Based on this,a comprehensive model of thermal stress and cognitive performance(TSCI-CP model)under high-temperature conditions was established,and its rationality for moderate activity intensity tasks was verified.The present study further investigated the applicability of the TSCI-CP model for low activity intensity tasks.By integrating experimental data from a series of climate chamber experiments conducted at five temperatures(26,30,33,37,and 39℃)and two humidity levels(50%and 70%),the relationship between physiological and psychological parameters and the cognitive performance of 104 subjects at a low-activity level(sitting)was analyzed.Subsequently,the TSCI-CP model for low activity intensity tasks was established.The results of the goodness of fit and deviation analysis confirmed the validity of the model.Based on the TSCI-CP model,a new perspective on the relationship between thermal stress and cognitive performance under high-temperature conditions was proposed:the speed of cognitive tests exhibited a U-shaped trend,while the accuracy followed an inverted U-shaped trend.This study offers a theoretical foundation for ensuring the safety and security of low activity workers in high-temperature environments.展开更多
基金supported by the National Natural Science Foundation of China(Nos.52278132 and 51978661).
文摘Experimental evidence suggests that high temperatures affect cognitive performance;however,there are limited quantitative models available to evaluate or predict this effect.In previous studies,the authors proposed a thermal stress comprehensive index(TSCI),which reflects the coupling of physiological and psychological parameters.Based on this,a comprehensive model of thermal stress and cognitive performance(TSCI-CP model)under high-temperature conditions was established,and its rationality for moderate activity intensity tasks was verified.The present study further investigated the applicability of the TSCI-CP model for low activity intensity tasks.By integrating experimental data from a series of climate chamber experiments conducted at five temperatures(26,30,33,37,and 39℃)and two humidity levels(50%and 70%),the relationship between physiological and psychological parameters and the cognitive performance of 104 subjects at a low-activity level(sitting)was analyzed.Subsequently,the TSCI-CP model for low activity intensity tasks was established.The results of the goodness of fit and deviation analysis confirmed the validity of the model.Based on the TSCI-CP model,a new perspective on the relationship between thermal stress and cognitive performance under high-temperature conditions was proposed:the speed of cognitive tests exhibited a U-shaped trend,while the accuracy followed an inverted U-shaped trend.This study offers a theoretical foundation for ensuring the safety and security of low activity workers in high-temperature environments.
