
Overview
Background
Juha Töyräs holds a position of Professorial Research Fellow in the School of Information Technology and Electrical Engineering, The University of Queensland. He is also is the Head of Research and Innovation, Kuopio University Hospital and Wellbeing Services County of North Savo, and Professor of Medical Physics and Engineering, University of Eastern Finland. He has a PhD degree in the field of medical physics and his research is focused on medical devices and sensors, medical imaging, medical signal processing and connective tissue biomechanics. Since 2004, he has been the Vice/Co-Head of the Biophysics of Bone and Cartilage research group and Co-Head of the Sleep Technology and Analytics group since it was founded in January 2017 at the Department of Applied Physics, University of Eastern Finland. The groups are relatively large (three professors, c.20 research fellows and postdocs and >60 PhD students) and productive (>750 full papers and >80 PhD theses during the last 20 years). Professor Töyräs holds research grants from various European and Australian sources. He has published 323 peer-reviewed full scientific papers and numerous abstracts in international scientific meetings. In addition, he has completed supervision of 52 PhD students and number of MSc students. His papers have been cited over 14000 times and his Hirsch-index is 63 (Google Scholar). Currently, Professor Toyras supervises (University of Eastern Finland, The University of Queensland) c.20 PhD-students and number of research fellows in various fields of biomedical engineering. In addition to scientific publications and supervised academic theses, his work has led to patents and commercialization of scientific innovations. One example of this line of research is the development of a forehead EEG-electrode set for emergency medicine. The Bittium BrainStatus EEG-electrode set is patented, CE-approved and currently in global market (https://www.bittium.com/products_services/medical/bittium_brainstatus).
Availability
- Professor Juha Toyras is:
- Available for supervision
Qualifications
- Masters (Coursework) of Science, University of Kuopio
- Doctor of Philosophy, University of Kuopio
Works
Search Professor Juha Toyras’s works on UQ eSpace
2023
Conference Publication
Tantalum Oxide Nanoparticles For Contrast-Enhanced Computed Tomography Diagnosis Of Osteoarthritis
Jäntti, J., Joenathan, A., Honkanen, J.T., Snyder, B.D., Töyräs, J., Grinstaff, M.W., Matikka, H. and Mäkelä, J.T. (2023). Tantalum Oxide Nanoparticles For Contrast-Enhanced Computed Tomography Diagnosis Of Osteoarthritis. 2023 OARSI World Congress on Osteoarthritis, Denver, CO United States, 17-20 March 2023. London, United Kingdom: Elsevier. doi: 10.1016/j.joca.2023.01.262
2023
Conference Publication
TANTALUM AND IODINE BASED DUAL-CONTRAST PHOTONCOUNTING COMPUTED TOMOGRAPHY METHOD FOR ASSESSMENT OF ARTICULAR CARTILAGE COMPOSITION
Paakkari, P., Inkinen, S. I., Jantti, J., Tuppurainen, J., Fugazzola, M. C., Joenathan, A., Ylisiurua, S., Nieminen, M. T., Grinstaff, M. W., Kroger, H., Toyras, J., Honkanen, J. T. and Makela, J. T. (2023). TANTALUM AND IODINE BASED DUAL-CONTRAST PHOTONCOUNTING COMPUTED TOMOGRAPHY METHOD FOR ASSESSMENT OF ARTICULAR CARTILAGE COMPOSITION. World Congress of Osteoarthritis Research Society International (OARSI), Denver Co, Mar 17-20, 2023. OXFORD: ELSEVIER SCI LTD.
2023
Journal Article
Obstructive sleep apnea patients with atrial arrhythmias suffer from prolonged recovery from desaturations
Rissanen, Marika, Korkalainen, Henri, Duce, Brett, Sillanmaki, Saara, Pitkanen, Henna, Suni, Aaron, Nikkonen, Sami, Kulkas, Antti, Toyras, Juha, Leppanen, Timo and Kainulainen, Samu (2023). Obstructive sleep apnea patients with atrial arrhythmias suffer from prolonged recovery from desaturations. IEEE Transactions on Biomedical Engineering, 70 (7), 2122-2130. doi: 10.1109/tbme.2023.3236680
2023
Conference Publication
3-D T1 relaxation time measurements in an equine model of mild post-traumatic osteoarthritis using MB-SWIFT
Pala, Swetha, Nykänen, Olli, Hänninen, Nina, Mohammadi, Ali, Ebrahimi, Mohammadhossein, Moller, Nikae te, Brommer, Harold, van Weeren, P René, Mäkelä, Janne, Korhonen, Rami, Töyräs, Juha, Mikkonen, Santtu and Nissi, Mikko (2023). 3-D T1 relaxation time measurements in an equine model of mild post-traumatic osteoarthritis using MB-SWIFT. Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting, London, United Kingdom, 7-12 May 2022. Berkeley, CA United States: International Society for Magnetic Resonance in Medicine. doi: 10.58530/2022/2305
2023
Journal Article
Generalizable deep learning-based sleep staging approach for ambulatory textile electrode headband recordings
Rusanen, M., Huttunen, R., Korkalainen, H., Myllymaa, S., Toyras, J., Myllymaa, K., Sigurdardottir, S., Olafsdottir, K. A., Leppanen, T., Arnardottir, E. S. and Kainulainen, S. (2023). Generalizable deep learning-based sleep staging approach for ambulatory textile electrode headband recordings. IEEE Journal of Biomedical and Health Informatics, 27 (99), 1-12. doi: 10.1109/jbhi.2023.3240437
2023
Journal Article
Corrections to “An In-Laboratory Comparison of FocusBand EEG Device and Textile Electrodes Against a Medical-Grade System and Wet Gel Electrodes”
Rusanen, Matias, Myllymaa, Sami, Kalevo, Laura, Myllymaa, Katja, Töyräs, Juha, Leppänen, Timo and Kainulainen, Samu (2023). Corrections to “An In-Laboratory Comparison of FocusBand EEG Device and Textile Electrodes Against a Medical-Grade System and Wet Gel Electrodes”. IEEE Access, 11, 37164-37165. doi: 10.1109/access.2023.3263457
2023
Book Chapter
Correction to: Pulse Oximetry: The Working Principle, Signal Formation, and Applications
Leppänen, Timo, Kainulainen, Samu, Korkalainen, Henri, Sillanmäki, Saara, Kulkas, Antti, Töyräs, Juha and Nikkonen, Sami (2023). Correction to: Pulse Oximetry: The Working Principle, Signal Formation, and Applications. Advances in the diagnosis and treatment of sleep apnea: filling the gap between physicians and engineers. (pp. C1-C1) edited by Thomas Penzel and Roberto Hornero. Cham, Switzerland: Springer International Publishing. doi: 10.1007/978-3-031-06413-5_23
2023
Conference Publication
Towards a deeper understanding of sleep stages through their representation in the latent space of variational autoencoders
Biedebach, Luka, Rusanen, Matias, Pórðarson, Benedikt Hólm, Arnardóttir, Erna Sif, Óskarsdóttir, María, Nikkonen, Sami, Korkalainen, Henri, Myllymaa, Sami, Töyräs, Juha, Kainulainen, Samu, Leppänen, Timo and Islind, Anna Sigridur (2023). Towards a deeper understanding of sleep stages through their representation in the latent space of variational autoencoders. 56th Annual Hawaii International Conference on System Sciences, HICSS 2023, Online, 3 - 6 January 2023. Washington, DC United States: IEEE Computer Society. doi: 10.24251/hicss.2023.382
2022
Journal Article
Desaturation event scoring criteria affect the perceived severity of nocturnal hypoxic load
Karhu, Tuomas, Leppänen, Timo, Korkalainen, Henri, Myllymaa, Sami, Duce, Brett, Töyräs, Juha and Nikkonen, Sami (2022). Desaturation event scoring criteria affect the perceived severity of nocturnal hypoxic load. Sleep Medicine, 100, 479-486. doi: 10.1016/j.sleep.2022.09.024
2022
Conference Publication
THE SEVERITY AND MORPHOLOGY OF INTERMITTENT HYPOXEMIAS ARE RELATED TO IMPAIRED DAYTIME ALERTNESS
Pahari, P., Korkalainen, H., Karhu, T., Rissanen, M., Arnardottir, E. S., Strom, H. H., Duce, B., Toyras, J., Leppanen, T. and Nikkonen, S. (2022). THE SEVERITY AND MORPHOLOGY OF INTERMITTENT HYPOXEMIAS ARE RELATED TO IMPAIRED DAYTIME ALERTNESS. AMSTERDAM: ELSEVIER.
2022
Conference Publication
DEEP LEARNING ENABLES ACCURATE AUTOMATIC SLEEP STAGING BASED ON AMBULATORY FOREHEAD EEG
Leino, A., Korkalainen, H., Kalevo, L., Nikkonen, S., Kainulainen, S., Ryan, A., Duce, B., Sipila, K., Ahlberg, J., Sahlman, J., Miettinen, T., Westeren-Punnonen, S., Mervaala, E., Toyras, J., Myllymaa, S., Leppanen, T. and Myllymaa, K. (2022). DEEP LEARNING ENABLES ACCURATE AUTOMATIC SLEEP STAGING BASED ON AMBULATORY FOREHEAD EEG. AMSTERDAM: ELSEVIER.
2022
Journal Article
Inter-sleep stage variations in corrected QT interval differ between obstructive sleep apnea patients with and without stroke history
Ebrahimian, Serajeddin, Sillanmäki, Saara, Hietakoste, Salla, Duce, Brett, Kulkas, Antti, Töyräs, Juha, Leppänen, Timo, Lipponen, Jukka A. and Kainulainen, Samu (2022). Inter-sleep stage variations in corrected QT interval differ between obstructive sleep apnea patients with and without stroke history. PLoS One, 17 (12) e0278520, 1-11. doi: 10.1371/journal.pone.0278520
2022
Conference Publication
ABSOLUTE GAMMA POWER OF EEG AROUSAL IS MODULATED BY RESPIRATORY EVENT TYPE AND SEVERITY IN OSA
Pitkanen, H., Duce, B., Leppanen, T., Kainulainen, S., Kulkas, A., Myllymaa, S., Toyras, J. and Korkalainen, H. (2022). ABSOLUTE GAMMA POWER OF EEG AROUSAL IS MODULATED BY RESPIRATORY EVENT TYPE AND SEVERITY IN OSA. AMSTERDAM: ELSEVIER.
2022
Journal Article
A comparison of signal combinations for deep learning-based simultaneous sleep staging and respiratory event detection
Huttunen, Riku, Leppanen, Timo, Duce, Brett, Arnardottir, Erna S., Nikkonen, Sami, Myllymaa, Sami, Toyras, Juha and Korkalainen, Henri (2022). A comparison of signal combinations for deep learning-based simultaneous sleep staging and respiratory event detection. IEEE Transactions on Biomedical Engineering, PP (99), 1704-1714. doi: 10.1109/tbme.2022.3225268
2022
Journal Article
ABOSA – Freely available automatic blood oxygen saturation signal analysis software: structure and validation
Karhu, Tuomas, Leppänen, Timo, Töyräs, Juha, Oksenberg, Arie, Myllymaa, Sami and Nikkonen, Sami (2022). ABOSA – Freely available automatic blood oxygen saturation signal analysis software: structure and validation. Computer Methods and Programs in Biomedicine, 226 107120, 1-10. doi: 10.1016/j.cmpb.2022.107120
2022
Conference Publication
P116 Increased airflow limitation during nocturnal respiratory events is associated with increased psychomotor vigilance task lapses in obstructive sleep apnoea patients
Staykov, E., Mann, D., Duce, B., Kainulainen, S., Leppänen, T., Töyräs, J., Sands, S. and Terrill, P. (2022). P116 Increased airflow limitation during nocturnal respiratory events is associated with increased psychomotor vigilance task lapses in obstructive sleep apnoea patients. 2022 Australasian Sleep Association, Brisbane, QLD Australia, 8-11 November 2022. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpac029.185
2022
Journal Article
Obstructive sleep apnoea-related respiratory events and desaturation severity are associated with the cardiac response
Hietakoste, Salla, Karhu, Tuomas, Sillanmäki, Saara, Bailón, Raquel, Penzel, Thomas, Töyräs, Juha, Leppänen, Timo, Myllymaa, Sami and Kainulainen, Samu (2022). Obstructive sleep apnoea-related respiratory events and desaturation severity are associated with the cardiac response. ERJ Open Research, 8 (4) 1, 12-12. doi: 10.1183/23120541.00121-2022
2022
Conference Publication
Sleep architecture differs for individuals manifesting excessive daytime sleepiness with and without obstructive sleep apnea
Chen, X., Korkalainen, H., Kainulainen, S., Leppänen, T., Oksenberg, A., Töyräs, J. and Terrill, P. (2022). Sleep architecture differs for individuals manifesting excessive daytime sleepiness with and without obstructive sleep apnea. 33rd Annual Scientific Meeting of the Australasian Sleep Association and the Australia and New Zealand Sleep Science Association, Brisbane, QLD, Australia, 8-11 November 2022. Oxford, United Kingdom: Oxford University Press . doi: 10.1093/sleepadvances/zpac029.028
2022
Journal Article
STAR sleep recording export software for automatic export and anonymization of sleep studies
Nikkonen, Sami, Korkalainen, Henri, Töyräs, Juha and Leppänen, Timo (2022). STAR sleep recording export software for automatic export and anonymization of sleep studies. Scientific Reports, 12 (1) 15859, 1-7. doi: 10.1038/s41598-022-19892-0
2022
Journal Article
The Sleep Revolution project: the concept and objectives
Arnardottir, Erna S., Islind, Anna Sigridur, Óskarsdóttir, María, Ólafsdóttir, Kristín A., August, Elias, Jónasdóttir, Lára, Hrubos-Strøm, Harald, Saavedra, Jose M., Grote, Ludger, Hedner, Jan, Höskuldsson, Sveinbjörn, Ágústsson, Jón Skírnir, Jóhannsdóttir, Kamilla Rún, McNicholas, Walter T., Pevernagie, Dirk, Sund, Reijo, Töyräs, Juha and Leppänen, Timo (2022). The Sleep Revolution project: the concept and objectives. Journal of Sleep Research, 31 (4) e13630, 1-8. doi: 10.1111/jsr.13630
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
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Doctor Philosophy
Understanding the Interaction of light with biological tissues: a computational modelling approach
Associate Advisor
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka
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Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
Completed supervision
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2025
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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2024
Doctor Philosophy
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
Media
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