Table 2. Articles related to combined effects of light and environmental factors on attention and reaction time .

Line	Title	Authors	Study method	Study type	Results
1	Effects of combined exposure to noise, heat, and lighting on cognitive performance 42	Amiri et al. 2015	A number of 128 subjects within the age range of 24-18 years were selected from among the students of Shiraz University of Medical Sciences. The Tool to evaluate cognitive function in this study was Paced Auditory Serial Addition Test.	Experimental	The mean score of attention and working memory were reduced with worsening combined conditions.
2	Investigating the combined effects of heat and lighting on students’ reaction time in laboratory conditions 20	Mohebian et al. 2016	The study was conducted on 33 healthy students in a thermal stress chamber. The reaction time was measured by a reaction time measurement device after exposure to different heat surfaces and lighting surfaces.	Experimental	Reaction times and reaction time error increased after combined exposure to heat and lighting.
3	Effects of noise, heat, and indoor lighting on cognitive performance and self-reported affect 46	Hygge et al. 2001	A factorial between-subject design was employed with three independent variables: Noise (38 and 58 dBA), Heat (21 and 278C), and Illuminance (300 and 1500 lx).	Experimental	Interactions were found between noise and heat on the long-term recall of a text and between noise and light on the free recall of emotionally toned words.
4	Combined effect of whole-body vibration and ambient lighting on human discomfort, heart rate, and reaction time 47	Monazzam et al. 2018	Participants were subjected to 12 experimental steps, each lasting 5 min for four different vibration accelerations in X, Y, and Z axes at a fixed frequency. Three different lighting intensities of 50, 500, and 1000 lx were also considered.	Experimental	The combined effect of vibration and lighting had no significant effect on any of the discomfort, heart rate, and reaction time variables.
5	Evaluation of the Combined Effects of Heat and Lighting on the Level of Attention and Reaction Time: Climate Chamber Experiments in Iran 69	Mohebian et al. 2018	Study was conducted on 33 healthy students (17 M/16 F). The attention and reaction time tests were performed by continuous performance test and the RT meter, respectively, in different exposure conditions.	Empirical	An increase in heat and lighting level caused a decrease in average attention percentage and correct responses, as well as an increase in commission error, omission error, and response time.