Influence of acute mental stress on the forehead photoplethysmographic signal waveformPilt, Kristjan; Karai, Deniss; Bachmann, Maie; Gavriljuk, Marietta; Fridolin, Ivo19th Nordic-Baltic conference on biomedical engineering and medical physics : proceedings of NBC 2023, June 12-14, 2023, Liepaja, Latvia2023 / p. 181 - 188 https://doi.org/10.1007/978-3-031-37132-5_23 Conference Proceedings at Scopus Article at Scopus