
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
2021
Journal Article
Functional and structural properties of human patellar articular cartilage in osteoarthritis
Nissinen, Mikko T., Hänninen, Nina, Prakash, Mithilesh, Mäkelä, Janne T.A., Nissi, Mikko J., Töyräs, Juha, Nieminen, Miika T., Korhonen, Rami K. and Tanska, Petri (2021). Functional and structural properties of human patellar articular cartilage in osteoarthritis. Journal of Biomechanics, 126 110634, 110634. doi: 10.1016/j.jbiomech.2021.110634
2021
Journal Article
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, Toyras, Juha, Leppanen, Timo and Kainulainen, Samu (2021). An in-laboratory comparison of FocusBand EEG device and textile electrodes against a medical-grade system and wet gel electrodes. IEEE Access, 9, 132580-132591. doi: 10.1109/access.2021.3113049
2021
Journal Article
Articular cartilage optical properties in the near-infrared (NIR) spectral range vary with depth and tissue integrity
Khan, Bilour, Kafian-Attari, Iman, Nippolainen, Ervin, Shaikh, Rubina, Semenov, Dmitry, Hauta-Kasari, Markku, Töyräs, Juha and Afara, Isaac O. (2021). Articular cartilage optical properties in the near-infrared (NIR) spectral range vary with depth and tissue integrity. Biomedical Optics Express, 12 (10), 6066-6080. doi: 10.1364/boe.430053
2021
Journal Article
Beyond the apnea–hypopnea index: alternative diagnostic parameters and machine learning solutions for estimation of sleep apnea severity
Leppänen, Timo, Myllymaa, Sami, Kulkas, Antti and Töyräs, Juha (2021). Beyond the apnea–hypopnea index: alternative diagnostic parameters and machine learning solutions for estimation of sleep apnea severity. Sleep, 44 (9) zsab134. doi: 10.1093/sleep/zsab134
2021
Journal Article
Diabetes and cardiovascular diseases are associated with the worsening of intermittent hypoxaemia
Karhu, Tuomas, Myllymaa, Sami, Nikkonen, Sami, Mazzotti, Diego R., Kulkas, Antti, Töyräs, Juha and Leppänen, Timo (2021). Diabetes and cardiovascular diseases are associated with the worsening of intermittent hypoxaemia. Journal of Sleep Research, 31 (1) e13441, e13441. doi: 10.1111/jsr.13441
2021
Journal Article
Assessment of obstructive sleep apnea-related sleep fragmentation utilizing deep learning-based sleep staging from photoplethysmography
Huttunen, Riku, Leppänen, Timo, Duce, Brett, Oksenberg, Arie, Myllymaa, Sami, Töyräs, Juha and Korkalainen, Henri (2021). Assessment of obstructive sleep apnea-related sleep fragmentation utilizing deep learning-based sleep staging from photoplethysmography. Sleep, 44 (10) zsab142, 1-10. doi: 10.1093/sleep/zsab142
2021
Journal Article
Biomechanical, biochemical, and near infrared spectral data of bovine knee ligaments and patellar tendon
Ristaniemi, Aapo, Torniainen, Jari, Paakkonen, Tommi, Stenroth, Lauri, Finnilä, Mikko A. J., Tanska, Petri, Töyräs, Juha and Korhonen, Rami K. (2021). Biomechanical, biochemical, and near infrared spectral data of bovine knee ligaments and patellar tendon. Data in brief, 36 106976, 106976. doi: 10.1016/j.dib.2021.106976
2021
Journal Article
Total durations of respiratory events are modulated within REM and NREM sleep by sleeping position and obesity in OSA patients
Rissanen, M., Oksenberg, A., Töyräs, J., Myllymaa, S. and Leppänen, T. (2021). Total durations of respiratory events are modulated within REM and NREM sleep by sleeping position and obesity in OSA patients. Sleep Medicine, 81, 394-400. doi: 10.1016/j.sleep.2021.02.020
2021
Journal Article
Longer and deeper desaturations are associated with the worsening of mild sleep apnea: the sleep heart health study
Karhu, Tuomas, Myllymaa, Sami, Nikkonen, Sami, Mazzotti, Diego R, Töyräs, Juha and Leppänen, Timo (2021). Longer and deeper desaturations are associated with the worsening of mild sleep apnea: the sleep heart health study. Frontiers in neuroscience, 15 657126, 657126. doi: 10.3389/fnins.2021.657126
2021
Journal Article
Raman spectroscopy is sensitive to biochemical changes related to various cartilage injuries
Shaikh, Rubina, Nippolainen, Ervin, Virtanen, Vesa, Torniainen, Jari, Rieppo, Lassi, Saarakkala, Simo, Afara, Isaac O. and Töyräs, Juha (2021). Raman spectroscopy is sensitive to biochemical changes related to various cartilage injuries. Journal of Raman Spectroscopy, 52 (4) jrs.6062, 796-804. doi: 10.1002/jrs.6062
2021
Journal Article
Automatic respiratory event scoring in obstructive sleep apnea using a long short-term memory neural network
Nikkonen, Sami, Korkalainen, Henri, Leino, Akseli, Myllymaa, Sami, Duce, Brett, Leppanen, Timo and Toyras, Juha (2021). Automatic respiratory event scoring in obstructive sleep apnea using a long short-term memory neural network. IEEE Journal of Biomedical and Health Informatics, 25 (8) 9373894, 2917-2927. doi: 10.1109/JBHI.2021.3064694
2021
Journal Article
Infrared fiber-optic spectroscopy detects bovine articular cartilage degeneration
Virtanen, Vesa, Nippolainen, Ervin, Shaikh, Rubina, Afara, Isaac O., Töyräs, Juha, Solheim, Johanne, Tafintseva, Valeria, Zimmermann, Boris, Kohler, Achim, Saarakkala, Simo and Rieppo, Lassi (2021). Infrared fiber-optic spectroscopy detects bovine articular cartilage degeneration. Cartilage, 13 (2_suppl), 1-10. doi: 10.1177/1947603521993221
2021
Journal Article
Corrigendum to "Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness" [Sleep Med 73 (2020) 231-237]
Kainulainen, Samu, Töyräs, Juha, Oksenberg, Arie, Korkalainen, Henri, Afara, Isaac O, Leino, Akseli, Kalevo, Laura, Nikkonen, Sami, Gadoth, Natan, Kulkas, Antti, Myllymaa, Sami and Leppänen, Timo (2021). Corrigendum to "Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness" [Sleep Med 73 (2020) 231-237]. Sleep medicine, 78, 202. doi: 10.1016/j.sleep.2020.11.006
2021
Journal Article
Characterization of connective tissues using near-infrared spectroscopy and imaging
Afara, Isaac O., Shaikh, Rubina, Nippolainen, Ervin, Querido, William, Torniainen, Jari, Sarin, Jaakko K., Kandel, Shital, Pleshko, Nancy and Töyräs, Juha (2021). Characterization of connective tissues using near-infrared spectroscopy and imaging. Nature Protocols, 16 (2), 1297-1329. doi: 10.1038/s41596-020-00468-z
2021
Journal Article
Discrete element and finite element methods provide similar estimations for hip joint contact mechanics during walking gait
Li, Mao, Venäläinen, Mikko S., Chandra, Shekhar S., Patel, Rushabh, Fripp, Jurgen, Engstrom, Craig, Korhonen, Rami K., Töyräs, Juha and Crozier, Stuart (2021). Discrete element and finite element methods provide similar estimations for hip joint contact mechanics during walking gait. Journal of Biomechanics, 115 110163, 1-11. doi: 10.1016/j.jbiomech.2020.110163
2021
Journal Article
Dual-contrast computed tomography enables detection of equine posttraumatic osteoarthritis in vitro
Saukko, Annina E. A., Sarin, Jaakko K., Nykänen, Olli, Nissi, Mikko J., te Moller, Nikae C. R., Weinans, Harrie, Mancini, Irina A. D., Visser, Jetze, Brommer, Harold, van Weeren, P. Réné, Malda, Jos, Grinstaff, Mark W. and Töyräs, Juha (2021). Dual-contrast computed tomography enables detection of equine posttraumatic osteoarthritis in vitro. Journal of Orthopaedic Research, 40 (3) jor.25066, 703-711. doi: 10.1002/jor.25066
2021
Journal Article
Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon
Ristaniemi, Aapo, Regmi, Dristi, Mondal, Diponkor, Torniainen, Jari, Tanska, Petri, Stenroth, Lauri, Finnilä, Mikko A. J., Töyräs, Juha and Korhonen, Rami K. (2021). Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon. Journal of the Royal Society. Interface, 18 (174) 20200737, 1-11. doi: 10.1098/rsif.2020.0737
2021
Journal Article
Structural, compositional, and functional effects of blunt and sharp cartilage damage on the joint: A 9-month equine groove model study
Te Moller, Nikae C R, Mohammadi, Ali, Plomp, Saskia, Serra Bragança, Filipe M, Beukers, Martijn, Pouran, Behdad, Afara, Isaac O, Nippolainen, Ervin, Mäkelä, Janne T A, Korhonen, Rami K, Töyräs, Juha, Brommer, Harold and van Weeren, P René (2021). Structural, compositional, and functional effects of blunt and sharp cartilage damage on the joint: A 9-month equine groove model study. Journal of Orthopaedic Research, 39 (11) jor.24971, 1-13. doi: 10.1002/jor.24971
2020
Journal Article
Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease
Leino, Akseli, Nikkonen, Sami, Kainulainen, Samu, Korkalainen, Henri, Töyräs, Juha, Myllymaa, Sami, Leppänen, Timo, Ylä-Herttuala, Salla, Westeren-Punnonen, Susanna, Muraja-Murro, Anu, Jäkälä, Pekka, Mervaala, Esa and Myllymaa, Katja (2020). Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease. Sleep Medicine, 79, 71-78. doi: 10.1016/j.sleep.2020.12.032
2020
Journal Article
Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects
Sarin, J. K., Te Moller, N. C. R., Mohammadi, A., Prakash, M., Torniainen, J., Brommer, H., Nippolainen, E., Shaikh, R., Mäkelä, J. T. A., Korhonen, R. K., van Weeren, P. R., Afara, I. O. and Töyräs, J. (2020). Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects. Osteoarthritis and Cartilage, 29 (3), 423-432. doi: 10.1016/j.joca.2020.12.007
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring
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
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Doctor Philosophy
Understanding the Interaction of light with biological tissues: a computational modelling approach
Associate Advisor
Completed supervision
-
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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