자동차 그래픽 시뮬레이터에서 동시자극에 대한 페퍼민트 향의 효과

The Effects of Peppermint Fragrance on Simultaneous Stimuli in a Vehicle Graphic Driving Simulator

본 연구는 차량 운전자가 동시자극으로 인한 환경에 처했을 때, 향 자극이 스트레스를 경감시키는 효과가 있는지 생체신호 측정을 통해 규명하고자 한다. 피험자 12명을 대상으로 생체신호의 주파수분석을 위해 뇌파는 α파와 β파로 구분하였으며, 심전도는 LF, HF대역별로 구분하여 중추신경계 및 교감신경계 활성도를 통해 안정, 각성상태를 확인하였다. 자동차 그래픽 시뮬레이터를 통해 운전 환경을 조성하였으며, 판단능력을 검사하는 Judgment Test Simulation을 실시하였다. 그 결과 뇌파의 경우, 주행만 실시한 대조군에 비해 동시자극을 제시한 실험군의 α파가 감소하였다(p<0.05). 향 자극을 제시하였을 경우, 대조군에 비해 α파가 감소하였으며 β파 역시 감소하였다(p<0.05). 심전도의 경우, 집단 간 유의한 차이가 나타나지 않았지만(p>0.05), 교감신경계가 활성화되는 경향을 보였다. 대조군과 실험군의 비교결과를 통해 동시자극이 스트레스를 유발하였음을 확인할 수 있었고, 향 자극을 통해 생리적으로 각성상태를 확인할 수 있었다.

This study is aimed to specify whether or not fragrance stimuli have an effect to reduce the stress when vehicle drivers are in the environment of the simultaneous stimuli through bio-signal measurement. In order to analyze the frequency of the biological signal for 12 subjects, a brain wave was divided into α-wave and β- wave, and ECG is divided by LF and HF bands, and the state of stability and awakening was identified through the activity of the central nervous system and sympathetic nervous system. The driving environment was created through a vehicle graphic simulator, and Judgment Test Simulation which examines judgment ability was conducted. As a result, for brain wave, the α- wave of the experimental group where the simultaneous stimuli were presented decreased(p<0.05), compared to the control group where only a drive was conducted, When fragrance stimuli were presented, α-wave decreased and β- wave also decreased(p<0.05), compared to the control group. For ECG, there was no significant difference between groups(p>0.05), however, there was a tendency that sympathetic nervous system got activated. Through the results of the comparison between the control group and the experimental group, it could be identified that the simultaneous stimuli induced the stress, and through fragrance stimuli, the state of awakening could be identified physiologically.