Experiencing the Light Through our Skin: an EEG Study of Colored Light on Blindfolded Subjects

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Light is omnipresent, surrounding us at every given moment, promoting different sensations and emotions. However, as we sense the light we do not only perceive it through our eyes, but our skin as well, as the epidermal contains photosensitive receptors similar to the retina, the opsins. 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.
Original languageEnglish
Title of host publication2019 IEEE 19th International Conference on Bioinformatics and Bioengineering (BIBE)
Number of pages8
PublisherIEEE
Publication dateOct 2019
Pages609 - 616
Article number8941636
ISBN (Electronic)9781728146171
DOIs
Publication statusPublished - Oct 2019
Event2019 IEEE 19th International Conference on Bioinformatics and Bioengineering (BIBE) -
Duration: 28 Oct 201930 Oct 2019
https://ieeexplore.ieee.org/xpl/conhome/8936463/proceeding

Conference

Conference2019 IEEE 19th International Conference on Bioinformatics and Bioengineering (BIBE)
Period28/10/201930/10/2019
Internet address
SeriesInternational Conference on Bioinformatics and Bioengineering
ISSN2471-7819

Keywords

  • Light
  • EEG
  • Electroencephalography
  • Machine Learning
  • Colored Light
  • Perception
  • Somato-sensory cortex
  • Data Visualization
  • Unsupervised learning
  • Opsins
  • Colored light

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