| Title |
The Study about Variation of Physiology Signal based on EEG due to Variation of Illumination |
| DOI |
https://doi.org/10.5370/KIEEP.2012.61.1.055 |
| Keywords |
HRV ; EEG ; {\alpha} wave ; SMR ; Productivity |
| Abstract |
By using EEG and HRV, subjects were estimated on their psychological and physiological reaction when reading psychrometric chart in 7 point century font, in an environmental test room in the condition of temperature 25[^{\circ}C], relative humidity 50[RH%], air current speed 0.02[m/sec], giving variation in illuminance to 0.1, 300, 600, 1000, 1300 and 1600[lux]. As a result, it was at 1300[lux] that absolute {\alpha} wave, SMR, SDNN were most vitalized, and also both sides {\alpha} wave asymmetry index, SEF50, HRT, stress and fatigue degree were at the lowest. It was found that a certain illuminance which minimizes psychological stress and fatigue degree while enhancing concentration and task achievement stably does exist. |