| Title |
An Experimental Study of the Bioelectrical Signals and Subjective Response in Changing from Unpleasant to Pleasant Temperatures in a Learning Environment |
| Authors |
Gwanghyun Im ; Jinhyun Kim ; Chasik Park ; Honghyun Cho |
| DOI |
http://dx.doi.org/10.6110/KJACR.2015.27.11.596 |
| Keywords |
생체전기신호 ; 뇌파 ; 광용적맥파 ; 쾌적감설문 ; 온열감설문 Biological electricity ; Electroencephalogram ; Photoplethysmography ; Comfort sensation vote ; Thermal sensation vote |
| Abstract |
In this study, experiments using bioelectronic signals and questionnaire surveys were carried out in learning conditions when temperatures changed from low- and high-uncomfortable to comfortable. As a result, the stress factor Photoplethysmography (PPG) decreased, while the Root Mean Square of Standard Deviation (RMSSD) of PPG increased when the indoor temperature was changed from low- or high-uncomfortable to comfortable. Additionally, the absolute power of the α-wave in the brain increased. According to the analysis of the association between the questionnaire and bioelectronic signals, the standard deviation of the stress factor as measured by pulse was closely related to the result of the thermal sensation questionnaire. In addition, it was found that the concentration on studying improved under comfortable temperatures when compared to uncomfortable temperatures. |