
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
2022
Journal Article
Dual‐contrast micro‐CT enables cartilage lesion detection and tissue condition evaluation ex vivo
Honkanen, Miitu K. M., Mohammadi, Ali, Moller, Nikae C. R., Ebrahimi, Mohammadhossein, Xu, Wujun, Plomp, Saskia, Pouran, Behdad, Lehto, Vesa‐Pekka, Brommer, Harold, Weeren, P. René, Korhonen, Rami K., Töyräs, Juha and Mäkelä, Janne T. A. (2022). Dual‐contrast micro‐CT enables cartilage lesion detection and tissue condition evaluation ex vivo. Equine Veterinary Journal, 55 (2), 315-324. doi: 10.1111/evj.13573
2022
Journal Article
Novel oxygen desaturation parameters are associated with cardiac troponin I: Data from the Akershus Sleep Apnea Project
Sigurdardottir, Fjola D., Øverby, Caroline Tonje, Nikkonen, Sami, Karhu, Tuomas, Dammen, Toril, Nordhus, Inger Hilde, Thorshov, Thea, Einvik, Gunnar, Kainulainen, Samu, Leppänen, Timo, Arnardottir, Erna Sif, Töyräs, Juha, Omland, Torbjørn and Hrubos-Strøm, Harald (2022). Novel oxygen desaturation parameters are associated with cardiac troponin I: Data from the Akershus Sleep Apnea Project. Journal of Sleep Research, 31 (5) e13581, e13581. doi: 10.1111/jsr.13581
2022
Journal Article
Near infrared spectroscopic evaluation of biochemical and crimp properties of knee joint ligaments and patellar tendon
Torniainen, Jari, Ristaniemi, Aapo, Sarin, Jaakko K., Prakash, Mithilesh, Afara, Isaac O., Finnilä, Mikko A.J., Stenroth, Lauri, Korhonen, Rami K. and Töyräs, Juha (2022). Near infrared spectroscopic evaluation of biochemical and crimp properties of knee joint ligaments and patellar tendon. PLoS ONE, 17 (2) e0263280, e0263280. doi: 10.1371/journal.pone.0263280
2022
Book Chapter
Pulse oximetry: the working principle, signal formation, and applications
Leppänen, Timo, Kainulainen, Samu, Korkalainen, Henri, Sillanmäki, Saara, Kulkas, Antti, Töyräs, Juha and Nikkonen, Sami (2022). 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. 205-218) edited by Thomas Penzel and Roberto Hornero. Singapore, Singapore: Springer Singapore. doi: 10.1007/978-3-031-06413-5_12
2022
Journal Article
Deep learning enables accurate automatic sleep staging based on ambulatory forehead EEG
Leino, Akseli, Korkalainen, Henri, Kalevo, Laura, Nikkonen, Sami, Kainulainen, Samu, Ryan, Alexander, Duce, Brett, Sipila, Kirsi, Ahlberg, Jari, Sahlman, Johanna, Miettinen, Tomi, Westeren-Punnonen, Susanna, Mervaala, Esa, Toyras, Juha, Myllymaa, Sami, Leppanen, Timo and Myllymaa, Katja (2022). Deep learning enables accurate automatic sleep staging based on ambulatory forehead EEG. IEEE Access, 10, 26554-26566. doi: 10.1109/ACCESS.2022.3154899
2022
Journal Article
Near-Infrared Spectroscopy Enables Arthroscopic Histologic Grading of Human Knee Articular Cartilage
Sarin, Jaakko K., Prakash, Mithilesh, Shaikh, Rubina, Torniainen, Jari, Joukainen, Antti, Kröger, Heikki, Afara, Isaac O. and Töyräs, Juha (2022). Near-Infrared Spectroscopy Enables Arthroscopic Histologic Grading of Human Knee Articular Cartilage. Arthroscopy, Sports Medicine, and Rehabilitation, 4 (5), e1767-e1775. doi: 10.1016/j.asmr.2022.07.002
2021
Journal Article
Self-applied home sleep recordings: The future of sleep medicine
Korkalainen, Henri, Nikkonen, Sami, Kainulainen, Samu, Dwivedi, Amit Krishna, Myllymaa, Sami, Leppänen, Timo and Töyräs, Juha (2021). Self-applied home sleep recordings: The future of sleep medicine. Sleep Medicine Clinics, 16 (4), 545-556. doi: 10.1016/j.jsmc.2021.07.003
2021
Journal Article
Quantitative dual contrast photon-counting computed tomography for assessment of articular cartilage health
Paakkari, Petri, Inkinen, Satu I., Honkanen, Miitu K. M., Prakash, Mithilesh, Shaikh, Rubina, Nieminen, Miika T., Grinstaff, Mark W., Mäkelä, Janne T. A., Töyräs, Juha and Honkanen, Juuso T. J. (2021). Quantitative dual contrast photon-counting computed tomography for assessment of articular cartilage health. Scientific Reports, 11 (1) 5556, 1-11. doi: 10.1038/s41598-021-84800-x
2021
Journal Article
Technical performance of textile-based dry forehead electrodes compared with medical-grade overnight home sleep recordings
Rusanen, Matias, Kainulainen, Samu, Korkalainen, Henri, Kalevo, Laura, Myllymaa, Katja, Leppanen, Timo, Toyras, Juha, Arnardottir, Erna Sif and Myllymaa, Sami (2021). Technical performance of textile-based dry forehead electrodes compared with medical-grade overnight home sleep recordings. IEEE Access, 9, 157902-157915. doi: 10.1109/access.2021.3128057
2021
Journal Article
Deep learning enables accurate automatic sleep stage classification in a clinical paediatric population
Somaskandhan, P., Korkalainen, H., Terrill, P., Sigurðardóttir, S., Arnardóttir, E., Ólafsdóttir, K., Sigurðardóttir, S., Clausen, M., Töyräs, J. and Leppänen, T. (2021). Deep learning enables accurate automatic sleep stage classification in a clinical paediatric population. Sleep Advances, 2 (S1), A66-A66. doi: 10.1093/sleepadvances/zpab014.178
2021
Journal Article
Reduced duration and continuity of N3 sleep is associated with excessive daytime sleepiness in suspected obstructive sleep apnea patients
Chen, X., Korkalainen, H., Leppänen, T., Oksenberg, A., Töyräs, J. and Terrill, P. (2021). Reduced duration and continuity of N3 sleep is associated with excessive daytime sleepiness in suspected obstructive sleep apnea patients. Sleep Advances, 2 (Supplement_1), A28-A28. doi: 10.1093/sleepadvances/zpab014.068
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
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
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Doctor Philosophy
Adaptation of Raman spectroscopy for diagnostic assessment of connective tissue integrity
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
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Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Professor Gerard Byrne, Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
-
Doctor Philosophy
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
Completed supervision
-
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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