| Title |
The Effect of Cold Air Stimulation on Electroencephalogram and Electrocardiogram during the Driver's Drowsiness |
| Authors |
Minsoo Kim ; Donggyu Kim ; Jongil Park ; Jongsoo Kum |
| DOI |
https://doi.org/10.6110/KJACR.2017.29.3.134 |
| Keywords |
졸음 ; 생리신호 ; 뇌파 ; 심전도 Drowsiness ; Physiologic signal ; EEG ; ECG |
| Abstract |
The purpose of this study was to analyze physiological changes via a cold air reaction experiment to generate basic data that are useful for the development of an automobile active air conditioning system to prevent drowsiness. The CO2 concentration causing drowsiness in vehicle operation was kept below a certain level. Air was blown to the driver's face by using an indoor air cooling apparatus. Sleepiness and the arousal state of the driver in cold wind were measured by physiological signals. It was evident in the EEG that alpha waves decreased and beta waves increased, caused by cold air stimulation. The α/β ratio was reduced by about 52.9% and an alert state confirmed. In the electrocardiogram analysis, the efficiency of cold air stimulation was confirmed by the mean heart rate interval change. The R-R interval had a delay time of about one minute compared to the EEG response. The findings confirmed an arousal effect from sleepiness due to cold air stimulation. |