
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
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.
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.
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
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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
-
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
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, 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
-
Doctor Philosophy
Adaptation of Raman spectroscopy for diagnostic assessment of connective tissue integrity
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
-
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
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
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Professor Gerard Byrne, Dr Peter Worthy, Professor Nadeeka Dissanayaka
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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