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Professor Juha Toyras
Professor

Juha Toyras

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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

81 - 100 of 398 works

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

Dual‐contrast micro‐CT enables cartilage lesion detection and tissue condition evaluation ex vivo

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

Novel oxygen desaturation parameters are associated with cardiac troponin I: Data from the Akershus Sleep Apnea Project

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

Near infrared spectroscopic evaluation of biochemical and crimp properties of knee joint ligaments and patellar tendon

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

Pulse oximetry: the working principle, signal formation, and applications

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

Deep learning enables accurate automatic sleep staging based on ambulatory forehead EEG

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

Near-Infrared Spectroscopy Enables Arthroscopic Histologic Grading of Human Knee Articular Cartilage

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

Self-applied home sleep recordings: The future of sleep medicine

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

Quantitative dual contrast photon-counting computed tomography for assessment of articular cartilage health

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

Technical performance of textile-based dry forehead electrodes compared with medical-grade overnight home sleep recordings

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

Deep learning enables accurate automatic sleep stage classification in a clinical paediatric population

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

Reduced duration and continuity of N3 sleep is associated with excessive daytime sleepiness in suspected obstructive sleep apnea patients

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

Functional and structural properties of human patellar articular cartilage in osteoarthritis

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

An in-laboratory comparison of FocusBand EEG device and textile electrodes against a medical-grade system and wet gel electrodes

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

Articular cartilage optical properties in the near-infrared (NIR) spectral range vary with depth and tissue integrity

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

Beyond the apnea–hypopnea index: alternative diagnostic parameters and machine learning solutions for estimation of sleep apnea severity

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

Diabetes and cardiovascular diseases are associated with the worsening of intermittent hypoxaemia

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

Assessment of obstructive sleep apnea-related sleep fragmentation utilizing deep learning-based sleep staging from photoplethysmography

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

Biomechanical, biochemical, and near infrared spectral data of bovine knee ligaments and patellar tendon

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

Total durations of respiratory events are modulated within REM and NREM sleep by sleeping position and obesity in OSA patients

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

Longer and deeper desaturations are associated with the worsening of mild sleep apnea: the sleep heart health study

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

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Supervision history

Current supervision

Completed supervision

Media

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