Skip to menu Skip to content Skip to footer
Professor Juha Toyras
Professor

Juha Toyras

Email: 

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

398 works between 1999 and 2025

121 - 140 of 398 works

2020

Journal Article

Near-infrared spectroscopy for mapping of human meniscus biochemical constituents

Ala-Myllymäki, Juho, Paakkonen, Tommi, Joukainen, Antti, Kröger, Heikki, Lehenkari, Petri, Töyräs, Juha and Afara, Isaac O. (2020). Near-infrared spectroscopy for mapping of human meniscus biochemical constituents. Annals of Biomedical Engineering, 49 (1), 469-476. doi: 10.1007/s10439-020-02578-x

Near-infrared spectroscopy for mapping of human meniscus biochemical constituents

2020

Journal Article

Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea

Korkalainen, Henri, Leppanen, Timo, Aakko, Juhani, Nikkonen, Sami, Kainulainen, Samu, Leino, Akseli, Duce, Brett, Afara, Isaac Oluwaseun, Myllymaa, Sami and Toyras, Juha (2020). Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea. IEEE Journal of Biomedical and Health Informatics, 24 (7) 8936942, 2073-2081. doi: 10.1109/JBHI.2019.2951346

Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea

2020

Journal Article

Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea

Kulkas, Antti, Duce, Brett, Töyräs, Juha, Seppä, Juha and Leppänen, Timo (2020). Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea. Journal of Sleep Research, 30 (2) e13070, e13070. doi: 10.1111/jsr.13070

Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea

2020

Journal Article

Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis

Kajabi, Abdul Wahed, Casula, Victor, Sarin, Jaakko K., Ketola, Juuso H., Nykänen, Olli, te Moller, Nikae C. R., Mancini, Irina A. D., Visser, Jetze, Brommer, Harold, René van Weeren, P., Malda, Jos, Töyräs, Juha, Nieminen, Miika T. and Nissi, Mikko J. (2020). Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis. Journal of Orthopaedic Research, 39 (1) jor.24780, 63-73. doi: 10.1002/jor.24780

Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis

2020

Journal Article

Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage

Nykänen, Olli, Leskinen, Henri P. P., Finnilä, Mikko A. J., Karhula, Sakari S., Turunen, Mikael J., Töyräs, Juha, Saarakkala, Simo and Nissi, Mikko J. (2020). Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage. Journal of Orthopaedic Research, 38 (12) jor.24777, 2649-2656. doi: 10.1002/jor.24777

Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage

2020

Journal Article

Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast

Bhattarai, Abhisek, Pouran, Behdad, Mäkelä, Janne T. A., Shaikh, Rubina, Honkanen, Miitu K. M., Prakash, Mithilesh, Kröger, Heikki, Grinstaff, Mark W., Weinans, Harrie, Jurvelin, Jukka S. and Töyräs, Juha (2020). Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast. Journal of Orthopaedic Research, 38 (10) jor.24774, 2230-2238. doi: 10.1002/jor.24774

Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast

2020

Journal Article

Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network

Nikkonen, Sami, Korkalainen, Henri, Kainulainen, Samu, Myllymaa, Sami, Leino, Akseli, Kalevo, Laura, Oksenberg, Arie, Leppänen, Timo and Töyräs, Juha (2020). Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network. Sleep, 43 (12) zsaa106. doi: 10.1093/sleep/zsaa106

Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network

2020

Journal Article

0593 Hypoxemia During Sleep Disordered Breathing and Cardiovascular Disease: A Comparison of Different Oxygen Desaturation Measures

Mazzotti, D R, Leppänen, T, Sands, S, Töyräs, J, Wellman, A, Kulkas, A, Redline, S, Karhu, T and Azarbarzin, A (2020). 0593 Hypoxemia During Sleep Disordered Breathing and Cardiovascular Disease: A Comparison of Different Oxygen Desaturation Measures. Sleep, 43 (Supplement_1). doi: 10.1093/sleep/zsaa056.590

0593 Hypoxemia During Sleep Disordered Breathing and Cardiovascular Disease: A Comparison of Different Oxygen Desaturation Measures

2020

Journal Article

Deep learning enables sleep staging from photoplethysmogram for patients with suspected sleep apnea

Korkalainen, Henri, Aakko, Juhani, Duce, Brett, Kainulainen, Samu, Leino, Akseli, Nikkonen, Sami, Afara, Isaac O., Myllymaa, Sami, Töyräs, Juha and Leppänen, Timo (2020). Deep learning enables sleep staging from photoplethysmogram for patients with suspected sleep apnea. Sleep, 43 (11) zsaa098. doi: 10.1093/sleep/zsaa098

Deep learning enables sleep staging from photoplethysmogram for patients with suspected sleep apnea

2020

Journal Article

Clinical contrast-enhanced computed tomography with semiautomatic segmentation provides feasible input for computational models of the knee joint

Myller, Katariina Anna Henriikka, Korhonen, Rami, Töyräs, Juha, Tanska, Petri, Väänänen, Sami, Jurvelin, Jukka S, Saarakkala, Simo and Mononen, Mika E (2020). Clinical contrast-enhanced computed tomography with semiautomatic segmentation provides feasible input for computational models of the knee joint. Journal of Biomechanical Engineering, 142 (5) 051001. doi: 10.1115/1.4045279

Clinical contrast-enhanced computed tomography with semiautomatic segmentation provides feasible input for computational models of the knee joint

2020

Journal Article

Open-source python module for automated preprocessing of near infrared spectroscopic data

Torniainen, Jari, Afara, Isaac O., Prakash, Mithilesh, Sarin, Jaakko K., Stenroth, Lauri and Töyräs, Juha (2020). Open-source python module for automated preprocessing of near infrared spectroscopic data. Analytica Chimica Acta, 1108, 1-9. doi: 10.1016/j.aca.2020.02.030

Open-source python module for automated preprocessing of near infrared spectroscopic data

2020

Journal Article

Polysomnographic characteristics of severe obstructive sleep apnea vary significantly between hypertensive and normotensive patients of both genders

Leppanen, T., Kulkas, A., Toyras, J., Myllymaa, S., Gadoth, N. and Oksenberg, A. (2020). Polysomnographic characteristics of severe obstructive sleep apnea vary significantly between hypertensive and normotensive patients of both genders. Sleep and Breathing, 25 (1), 105-116. doi: 10.1007/s11325-020-02047-8

Polysomnographic characteristics of severe obstructive sleep apnea vary significantly between hypertensive and normotensive patients of both genders

2020

Conference Publication

HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES

Mazzotti, D. R., Leppanen, T., Sands, S., Toyras, J., Wellman, A., Kulkas, A., Redline, S., Karhu, T. and Azarbarzin, A. (2020). HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES. 34th Annual Meeting of the Associated-Professional-Sleep-Societies (SLEEP), Philadelphia Pa, Jun 13-17, 2020. CARY: OXFORD UNIV PRESS INC.

HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES

2020

Journal Article

Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties

Ristaniemi, A., Torniainen, J., Stenroth, L., Finnilä, M. A.J., Paakkonen, T., Töyräs, J. and Korhonen, R. K. (2020). Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties. Journal of the Mechanical Behavior of Biomedical Materials, 104 103639, 103639. doi: 10.1016/j.jmbbm.2020.103639

Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties

2020

Journal Article

Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7)

Nikkonen, Sami, Afara, Isaac O., Leppänen, Timo and Töyräs, Juha (2020). Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7). Scientific Reports, 10 (1) 4977, 4977. doi: 10.1038/s41598-020-62003-0

Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7)

2020

Journal Article

Machine learning classification of articular cartilage integrity using near infrared spectroscopy

Afara, Isaac O., Sarin, Jaakko K., Ojanen, Simo, Finnilä, Mikko A. J., Herzog, Walter, Saarakkala, Simo, Korhonen, Rami K. and Töyräs, Juha (2020). Machine learning classification of articular cartilage integrity using near infrared spectroscopy. Cellular and Molecular Bioengineering, 13 (3), 219-228. doi: 10.1007/s12195-020-00612-5

Machine learning classification of articular cartilage integrity using near infrared spectroscopy

2020

Journal Article

Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes

Kalevo, Laura, Myllymaa, Sami, Miettinen, Tomi, Leino, Akseli, Kainulainen, Samu, Korkalainen, Henri, Myllymaa, Katja, Toyras, Juha, Leppanen, Timo and Laitinen, Tiina (2020). Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes. IEEE Access, 8 9017959, 50934-50943. doi: 10.1109/ACCESS.2020.2977172

Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes

2020

Journal Article

Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients

Kainulainen, Samu, Duce, Brett, Korkalainen, Henri, Oksenberg, Arie, Leino, Akseli, Arnardottir, Erna S., Kulkas, Antti, Myllymaa, Sami, Töyräs, Juha and Leppänen, Timo (2020). Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients. European Respiratory Journal, 55 (4) 1901849, 1901849. doi: 10.1183/13993003.01849-2019

Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients

2020

Journal Article

Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea

Leino, Akseli, Westeren-Punnonen, Susanna, Töyräs, Juha, Myllymaa, Sami, Leppänen, Timo, Ylä-Herttuala, Salla, Muraja-Murro, Anu, Kantanen, Anne-Mari, Autere, Jaana, Jäkälä, Pekka, Mervaala, Esa and Myllymaa, Katja (2020). Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea. Sleep and Breathing, 24 (4), 1495-1505. doi: 10.1007/s11325-019-02010-2

Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea

2020

Journal Article

Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries

Nippolainen, Ervin, Shaikh, Rubina, Virtanen, Vesa, Rieppo, Lassi, Saarakkala, Simo, Töyräs, Juha and Afara, Isaac O. (2020). Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries. Annals of Biomedical Engineering, 48 (9), 2343-2353. doi: 10.1007/s10439-020-02506-z

Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries

Funding

Current funding

  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    NHMRC European Union Collaborative Research Grants
    Open grant
  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    University of Reykjavik
    Open grant

Past funding

  • 2021 - 2024
    Deep learning and physiology based approach to derive and link obstructive sleep apnoea phenotypes and symptomatology
    NHMRC IDEAS Grants
    Open grant
  • 2021 - 2024
    Osteoarthritis Compass: Personalized prediction of disease onset and progression. (NHMRC Ideas Grant administered by Griffith University)
    Griffith University
    Open grant

Supervision

Availability

Professor Juha Toyras is:
Available for supervision

Before you email them, read our advice on how to contact a supervisor.

Supervision history

Current supervision

Completed supervision

Media

Enquiries

For media enquiries about Professor Juha Toyras's areas of expertise, story ideas and help finding experts, contact our Media team:

communications@uq.edu.au