视觉诱发电位在人体视觉舒适性研究中的应用

Application of Visual Evoked Potential in Human Visual Comfort

建筑室内色温水平会影响人员的工作效率、视觉舒适性等。收集了不同色温水平下15名受试者的图像翻转视觉诱发电位(pattern reversal visual evoked potential,PRVEP)数据和主观调查投票数据,采用模糊熵分析方法对客观生理参数进行分析,并基于PRVEP模糊熵与主观调查之间存在的极强相关性和生理上反应的相似性建立二者的数理关系,以使用客观生理指标预测主观感受,更加准确地实现对人体主观视觉舒适度的预测。研究发现在不同色温下人体PRVEP模糊熵和刺激程度投票值都随着色温的增大而逐渐增大,而眼部疲顿度则呈现出先减小后增加的变化趋势。高色温的冷色调环境下人体PRVEP模糊熵和主观调查值最大,应对刺激时的生理反应最强烈,舒适性不佳。而在4000 K左右的中性色温环境下PRVEP模糊熵和刺激程度会略微增加但眼部疲顿度会减小,更适宜的色温工作环境有助于提高舒适感和工作效率。

The indoor color temperature level affects the work efficiency and visual comfort.Collected the pattern reversal visual evoked potential(PRVEP)data and subjective survey of 15 subjects under different color temperature levels.The fuzzy entropy analysis method was used to analyze the objective physiological parameters.The existence of strong correlation and similarity of physiological responses between PRVEP fuzzy entropy and subjective investigation established the mathematical relationship,which were predicted subjective feelings by using objective physiological indicators and obtained more accurately subjective visual comfort.The results recommends that the PRVEP fuzzy entropy and stimulate voting under different color temperatures gradually increase with the increase of color temperatures,while the trend of the eye fatigue is first decreasing and then increasing.The PRVEP fuzzy entropy and subjective investigation are the largest under the high color temperature,causing the strongest the physiological response and no great comfort.In the neutral color temperature of around 4000 K,the PRVEP fuzzy entropy and stimulation slightly increase,but eye fatigue decreases.The working environment for preferably color temperature would improve visual comfort and work efficiency.