The Effects of Blue Light Exposure to Cognition Function for Night Driving Activity in a Car-Driving Simulator

• Main Author: Prestiasani - Nim: 10613066, Kinanti
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28497
• Institution: Institut Teknologi Bandung

<p align="justify">The Central Bureau of Statistics reported the number of traffic accidents in Indonesia is 106,129 with 26,185 casualties. Among 69% of the factors causing this accident is driver decline in cognitive function, usually known as sleepiness or drowsy driving (KNKT Database, 2016). Driving is a complex activity that engange complex motor, sensor and cognitive function. Exposure of blue light to people while doing night-driving has been shown to improve cognitive function with increase of beta brain wave and decrease of alpha waves as indicators. However, no studies have described long-term and repetition effects of the blue light exposure. In this study, fifteen adult male had driving session on the car simulator with a straight and monotonous road for 30 minutes without pause. The participants divided into three groups; driving without extra light (control group) , driving Alt exposure from polichromatic blue light , and driving with continuous irradiation of blue LED light (monochromatic). During the driving session the participant’s brain wave was measured using brain waves using electroencephalogram (EEG). The brain wave power spectral density from two channels (F3 and F4) representing the right and left hemisphere of the frontal lobe, which associated with cognitive function was extracted and analyzed. The results showed that there was a significant increase of both beta wave power and alpha wave power (p <0.01) on the second day of exposure in both blue light treatment group. In general, the beta waves have a stronger power of alpha waves, which indicates a cognitive process. Monochromatic blue light group showed more stable beta waves than the control and polichromatic blue light groups. There is synchronization from the F3 and F4 sections in all treatment groups. In conclusions, repeated continuous exposure of blue light can increase both alpha and beta waves, in which monochromatic blue light causes better cognitive state0.<p align="justify">