The work “Experiencing the Light Through our Skin – an EEG Study of Colored Light on Blindfolded Subjects” was presented at the 19th annual IEEE International Conference on Bioinformatics and Bioengineering, Athens, Greece, 28-30 October 2019.
In this study the sensations from the skin were measured through electroencephalography (EEG) to understand its contribution to our experience of light. For this experiment the subjects were blindfolded and placed in a daylight isolated room with artificial light. Here they were exposed to red, green and blue light as well as darkness. Through a temporal spectrum evolution (TSE) and a machine learning algorithm for visualizing highly dimensional data (t-SNE) the color based perception signatures were found to be distinguishable. T-SNE clustered the TSE maps into four separable segments, one for each scenario. Inside each of these clusters unique delta, theta, alpha and beta event related desynchronization and synchronization (ERD/ERS) biomarkers could be found. These biomarkers could cultivate the idea that when red and blue are sensed through the skin they elicit cortical arousal and awareness, while green promotes calmness and relaxation.
The results of the research work “ΑΙ-empowered lighting style/atmosphere transfer” were presented in PLDC 2019, Rotterdam , 23-26 October
New paper has been published at Elsevier’s Computers and Electronics in Agriculture, Volume 165, October 2019, titled “Deep learning-based visual recognition of rumex for robotic precision farming”, authored by Tsampikos Kounalakis, Georgios A. Triantafyllidis and Lazaros Nalpantidis (https://doi.org/10.1016/j.compag.2019.104973).
EEG can offer a more objective and clear evaluation tool for different lighting settings. A current master thesis by Mads Deibjerg Lind <mlind14 <at> student.aau.dk> is using EEG to investigate how light of different kind is translated in the brain.
The work titled “ΑΙ-empowered lighting style/atmosphere transfer” has been accepted for presentation as a research Paper in Light & Technology at the 8th Professional Lighting Design Convention (PLDC 2019), which will take place at Rotterdam 23-26 October 2019.
In the context of the LYS project with the municipalities of Copenhagen and Aarhus, we have completed in April 2019, an evaluation of 15 portable lighting fixtures focusing on the circadian stimulus metric. The fixtures will be used for offering circadian lighting for elderly people. Really exciting results!
Lighting Design MSc education at AAU Copenhagen, along with other leading LiD educations is participating in the Erasmus project “Light 4 Health” https://www.light4health.net. In the context of this project, there will be a summer school, from 29 July to 2 of August at Wolverhampton UK, with the title “Interior Lighting for Domestic Spaces”. More info at https://www.light4health.net/