Author:
Rahma K T,Salma S A,Widyanti A,Suprijanto
Abstract
Abstract
Several studies have discussed the influence of blue light on cognitive activity. This study aims to determine the effectiveness of blue light in increasing alertness at night in tropical countries. Twelve healthy young males joined in this study. All participants were asked to do a monotonous activity that is reading activity. The experiment was a within-subject design with the independent variable is lighting condition (normal light and blue light) and duration of exposure (30 minutes and 60 minutes). Electroencephalography (EEG) signals were recorded continuously during the experiment. Alertness was measured based on theta, alpha, and beta activity. The result is the light condition not significantly affected the theta (F (1,11) = 0.608, ρ = 0.452), alpha (F (1,11) = 1.561, ρ = 0.237), and beta (F (1,11) = 0.608, ρ = 0.700) activity. This shows that blue light is not effective in increasing alertness at night in the tropical country both in short and long duration of exposure.
Reference13 articles.
1. Non-Visual Effects of Light on Melatonin, Alertness and Cognitive Performance: Can Blue-Enriched Light Keep Us Alert?;Chellappa;PLoS One,2011
2. Analysis of the meditation brainwave from consumer EEG device;Surangsrirat,2015
3. Short-wavelength effectiveness for the direct effects of light on alertness, vigilance, and the waking electroencephalogram in humans;Lockley;Sleep,2006