About the Authors

Pawel J. Winklewski

pawelwinklewski@wp.pl

Affiliation Institute of Human Physiology, Medical University of Gdansk, Gdansk, Poland

Yurii Tkachenko

Affiliation National Centre for Hyperbaric Medicine, Institute of Maritime and Tropical Medicine, Medical University of Gdansk, Gdynia, Poland

Kamila Mazur

Affiliation Department of Biomedical Engineering, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Gdansk, Poland

Jacek Kot

Affiliation National Centre for Hyperbaric Medicine, Institute of Maritime and Tropical Medicine, Medical University of Gdansk, Gdynia, Poland

Marcin Gruszecki

Affiliation Department of Radiology Informatics and Statistics, Medical University of Gdansk, Gdansk, Poland

Wojciech Guminski

Affiliation Department of Computer Communications, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Gdansk, Poland

Krzysztof Czuszynski

Affiliation Department of Biomedical Engineering, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Gdansk, Poland

Jerzy Wtorek

Affiliation Department of Biomedical Engineering, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Gdansk, Poland

Andrzej F. Frydrychowski

Affiliation Institute of Human Physiology, Medical University of Gdansk, Gdansk, Poland

Competing Interests

This study was partially funded by NIRT sp. z o.o., Wierzbice, Poland, who also rented the authors the SAS-Monitor device, which is a product in development. A. Frydrychowski owns several patents related to NIR-T/BSS technology and is a stakeholder in NIRT sp. z o.o. Patents: A. Frydrychowski, M. Rukasz: P.376246, 28 November 2011; A. Frydrychowski, M. Rukasz: P.357040, 21 March 2007; A. Frydrychowski, M. Rukasz: P.344496, 31 July 2007. All patents are related to non-invasive monitoring of the subarchnoid space and pial artery, signal detection and analysis. There are no further patents, products in development or marketed products to declare. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: PJW. Performed the experiments: JK YT PJW. Analyzed the data: MG WG KM YT PJW. Contributed reagents/materials/analysis tools: AFF JK KC JW. Wrote the paper: AFF MG JK PJW.