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

61 - 80 of 398 works

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.

THE SEVERITY AND MORPHOLOGY OF INTERMITTENT HYPOXEMIAS ARE RELATED TO IMPAIRED DAYTIME ALERTNESS

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.

DEEP LEARNING ENABLES ACCURATE AUTOMATIC SLEEP STAGING BASED ON AMBULATORY FOREHEAD EEG

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

Inter-sleep stage variations in corrected QT interval differ between obstructive sleep apnea patients with and without stroke history

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.

ABSOLUTE GAMMA POWER OF EEG AROUSAL IS MODULATED BY RESPIRATORY EVENT TYPE AND SEVERITY IN OSA

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

A comparison of signal combinations for deep learning-based simultaneous sleep staging and respiratory event detection

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

ABOSA – Freely available automatic blood oxygen saturation signal analysis software: structure and validation

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

Sleep architecture differs for individuals manifesting excessive daytime sleepiness with and without obstructive sleep apnea

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

P116 Increased airflow limitation during nocturnal respiratory events is associated with increased psychomotor vigilance task lapses in obstructive sleep apnoea patients

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

Obstructive sleep apnoea-related respiratory events and desaturation severity are associated with the cardiac response

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

STAR sleep recording export software for automatic export and anonymization of sleep studies

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

The Sleep Revolution project: the concept and objectives

2022

Journal Article

Subject‐specific biomechanical analysis to estimate locations susceptible to osteoarthritis—finite element modeling and MRI follow‐up of ACL reconstructed patients

Bolcos, Paul O., Mononen, Mika E., Roach, Koren E., Tanaka, Matthew S., Suomalainen, Juha‐Sampo, Mikkonen, Santtu, Nissi, Mikko J., Töyräs, Juha, Link, Thomas M., Souza, Richard B., Majumdar, Sharmila, Ma, C. Benjamin, Li, Xiaojuan and Korhonen, Rami K (2022). Subject‐specific biomechanical analysis to estimate locations susceptible to osteoarthritis—finite element modeling and MRI follow‐up of ACL reconstructed patients. Journal of Orthopaedic Research, 40 (8), 1744-1755. doi: 10.1002/jor.25218

Subject‐specific biomechanical analysis to estimate locations susceptible to osteoarthritis—finite element modeling and MRI follow‐up of ACL reconstructed patients

2022

Journal Article

Assessment of Ligament Viscoelastic Properties Using Raman Spectroscopy

Cui, Andy, Nippolainen, Ervin, Shaikh, Rubina, Torniainen, Jari, Ristaniemi, Aapo, Finnilä, Mikko, Korhonen, Rami K., Saarakkala, Simo, Herzog, Walter, Töyräs, Juha and Afara, Isaac O. (2022). Assessment of Ligament Viscoelastic Properties Using Raman Spectroscopy. Annals of Biomedical Engineering, 50 (9), 1134-1142. doi: 10.1007/s10439-022-02988-z

Assessment of Ligament Viscoelastic Properties Using Raman Spectroscopy

2022

Journal Article

The influence of wearables on healthcare outcomes in chronic disease: a systematic review

Mattison, Graeme, Canfell, Oliver, Forrester, Douglas, Dobbins, Chelsea, Smith, Daniel, Töyräs, Juha and Sullivan, Clair (2022). The influence of wearables on healthcare outcomes in chronic disease: a systematic review. Journal of Medical Internet Research, 24 (7) e36690, 1-40. doi: 10.2196/36690

The influence of wearables on healthcare outcomes in chronic disease: a systematic review

2022

Journal Article

Site- and zone-dependent changes in proteoglycan content and biomechanical properties of bluntly and sharply grooved equine articular cartilage

Mohammadi, Ali, te Moller, Nikae C. R., Ebrahimi, Mohammadhossein, Plomp, Saskia, Brommer, Harold, van Weeren, P. René, Mäkelä, Janne T. A., Töyräs, Juha and Korhonen, Rami K. (2022). Site- and zone-dependent changes in proteoglycan content and biomechanical properties of bluntly and sharply grooved equine articular cartilage. Annals of Biomedical Engineering, 50 (12), 1-11. doi: 10.1007/s10439-022-02991-4

Site- and zone-dependent changes in proteoglycan content and biomechanical properties of bluntly and sharply grooved equine articular cartilage

2022

Journal Article

Self-applied electrode set provides a clinically feasible solution enabling EEG recording in home sleep apnea testing

Kalevo, Laura, Miettinen, Tomi, Leino, Akseli, Westeren-Punnonen, Susanna, Sahlman, Johanna, Mervaala, Esa, Toyras, Juha, Leppanen, Timo, Myllymaa, Sami and Myllymaa, Katja (2022). Self-applied electrode set provides a clinically feasible solution enabling EEG recording in home sleep apnea testing. IEEE Access, 10, 60633-60642. doi: 10.1109/ACCESS.2022.3178189

Self-applied electrode set provides a clinically feasible solution enabling EEG recording in home sleep apnea testing

2022

Journal Article

Infrared spectroscopy is suitable for objective assessment of articular cartilage health

Virtanen, V., Tafintseva, V., Shaikh, R., Nippolainen, E., Haas, J., Afara, I. O., Töyräs, J., Kröger, H., Solheim, J., Zimmermann, B., Kohler, A., Mizaikoff, B., Finnilä, M., Rieppo, L. and Saarakkala, S. (2022). Infrared spectroscopy is suitable for objective assessment of articular cartilage health. Osteoarthritis and Cartilage Open, 4 (2) 100250, 1-7. doi: 10.1016/j.ocarto.2022.100250

Infrared spectroscopy is suitable for objective assessment of articular cartilage health

2022

Journal Article

QTc prolongation is associated with severe desaturations in stroke patients with sleep apnea

Sillanmäki, Saara, Lipponen, Jukka A., Korkalainen, Henri, Kulkas, Antti, Leppänen, Timo, Nikkonen, Sami, Töyräs, Juha, Duce, Brett, Suni, Aaron and Kainulainen, Samu (2022). QTc prolongation is associated with severe desaturations in stroke patients with sleep apnea. BMC Pulmonary Medicine, 22 (1) 204, 1-10. doi: 10.1186/s12890-022-01996-y

QTc prolongation is associated with severe desaturations in stroke patients with sleep apnea

2022

Journal Article

Gamma power of electroencephalogram arousal is modulated by respiratory event type and severity in obstructive sleep apnea

Pitkanen, Henna, Duce, Brett, Leppanen, Timo, Kainulainen, Samu, Kulkas, Antti, Myllymaa, Sami, Toyras, Juha and Korkalainen, Henri (2022). Gamma power of electroencephalogram arousal is modulated by respiratory event type and severity in obstructive sleep apnea. IEEE Transactions on Biomedical Engineering, 69 (4), 1417-1423. doi: 10.1109/tbme.2021.3118229

Gamma power of electroencephalogram arousal is modulated by respiratory event type and severity in obstructive sleep apnea

2022

Journal Article

Changes in subchondral bone structure and mechanical properties do not substantially affect cartilage mechanical responses – A finite element study

Orava, Heta, Huang, Lingwei, Ojanen, Simo P., Mäkelä, Janne T.A., Finnilä, Mikko A.J., Saarakkala, Simo, Herzog, Walter, Korhonen, Rami K., Töyräs, Juha and Tanska, Petri (2022). Changes in subchondral bone structure and mechanical properties do not substantially affect cartilage mechanical responses – A finite element study. Journal of the Mechanical Behavior of Biomedical Materials, 128 105129, 1-15. doi: 10.1016/j.jmbbm.2022.105129

Changes in subchondral bone structure and mechanical properties do not substantially affect cartilage mechanical responses – A finite element 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

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