荧光灯光谱、光强对辨别力的影响  

The influence of fluorescent lamps with different color temperatures and luminance levels on discrimination

作　　者：严永红[1,2,3] 田海[1,2,3] 关杨[1,2,3] 张明睿[1,2,3] 曾恒志[1,2,3] 

机构地区：[1]重庆大学建筑城规学院,重庆400030 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400030 [3]华南理工大学亚热带建筑科学国家重点实验室,广州510640

出　　处：《重庆大学学报（自然科学版）》2012年第1期141-146,共6页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50778182);重庆大学中央高校基本科研业务费科研专项'研究生科技创新基金'资助项目(CDJXS10190008);华南理工大学亚热带建筑科学国家重点实验室开放研究项目基金资助(2009KB15)

摘　　要：为探讨教室照明对生理节律的影响,研究采用汉语双字词卡片和'学习-再认'实验模式,借助信号检测论中辨别力d作为指标,测试和分析了3种典型色温T5荧光灯在4种不同照度水平下对学生短时记忆再认能力和脑疲劳的影响。结果表明,受非视觉效应影响,在一定时间长度内,学生在不同光谱、不同照度光环境下的汉语双字词短时记忆再认能力和脑疲劳各不相同,低色温、低照度对大脑具有'唤醒'作用,可提高短时记忆能力;中间色温为最适宜光环境,可使大脑保持适度兴奋,但该色温高照度下,脑疲劳相对较重,学习效率较低;高色温下脑疲劳最重;'时间累积'效应对短时记忆能力的影响显著,应予以重视。Short-term memory measurement is an important method to determine study fatigue as it pertains to learning outcome. This project examines the impact of classroom-lighting on circadian rhythm. A learning-recognition model using two-character Chinese word cards formed the basis of this study. Utilizing the discriminating ability in Signal Detection Theory as an index, students＇ brain fag （mental exhaustion and fatigue）, short-term memory and recognition ability are tested and analyzed. The subjects are placed under T5 fluorescent lamps of 3 typical colour temperatures and with 4 luminance levels. Within a certain length of time, students ＇ brain fag and recognition ability of short-term memory differs under different spectrum conditions and luminance levels. Low colour temperature and low luminance has a wake-up effect that improves short-term memory. Medium colour temperature is the optimum that can keep brain function appropriately excited. Under high luminance level, brain fag is more serious and learning efficiency is lower. Brain fatigue is most pronounced under high colour temperature. Obviously longer exposure time to the Chinese characters will result in higher recognition ability. This study has important implications in how to improve learning through properly designed lighting conditions.

关 键 词：照明 荧光灯 短时记忆 再认 辨别力 脑疲劳 

分 类 号：TU113.191[建筑科学—建筑理论]