Dr. Kalavally obtained her Bachelor of Electrical and Electronics Engineering degree from the National Institute of Technology, University of Calicut, India, M.Sc in Radio Communications and High Frequency Engineering from the University of Leeds in UK and PhD in Optical Communications from Monash University, Australia. She is currently a senior lecturer at School of Engineering at Monash. Her areas of interest include modelling and analysis of optical amplifiers, applications of solid state lighting in Smart Lighting Systems, visible light communications, visual and non-visual quality of light and innovative approaches to better teaching and better learning.
Impact of Artificial Illumination on Alertness and Cognition – A Psychophysical Evaluation
It is not fully known yet how artificial lights can be designed and utilized to provide benefits for mankind taking into consideration the combined impact of its visual and non-visual effects. In particular, those effects closely related with the human circadian rhythm such as alertness and cognition which are central to human well-being. While previous studies investigated mainly based on variation in the correlated color temperature (CCT) of light, this study is based on the circadian action factor (CAF) computed using the action spectra of the non-visual response of humans to light. Test spectra are implemented using a polychromatic LED-based light source and results from psychophysical tests including EEG which go beyond the more commonly used subjective assessment, by a small group of participants are presented as a pilot study.