Dr Jari Torniainen
Lecturer
School of Electrical Engineering and Computer Science
Researcher biography
Dr Torniainen's main research interests are in the fields of biomedical signal and image processing, biophotonics, and applied spectroscopy. He holds BSc/MSc in Electrical Engineering from Aalto University (Finland, 2015) and a PhD in Applied Physics from University of Eastern Finland (Finland, 2020). He has previously worked with developing preprocessing techniques for EEG/MEG, real-time analysis methods for physiological signals (e.g., ECG/EMG/EDA), and near-infrared spectroscopy based analysis of tissue integrity for musculoskeletal tissues. His current research focus is on machine learning in image processing, analysis, and synthesis of biomedical images acquired using a combination of terahertz imaging, nano-FTIR, and Raman spectroscopy. The purpose of this study is to better understand the interaction between light and multi-layered tissues such as articular cartilage and skin.
Journal Articles
Kundu, Urbi, Torniainen, Jari, Bertling, Karl, Kashyap, Mayuri, Donose, Bogdan C., Gillespie, Tim, Indjin, Dragan, Li, Lianhe, Linfield, Edmund H., Davies, A. Giles, Dean, Paul, Bandyopadhyay, Aparajita, Sengupta, Amartya and Rakić, Aleksandar D. (2024). Detecting genetic variation in plants by mapping cell water dynamics with terahertz laser feedback interferometry. IEEE Transactions on Terahertz Science and Technology. doi: 10.1109/tthz.2024.3412826
Qi, X., Bertling, K., Torniainen, J., Kong, F., Gillespie, T., Primiero, C., Stark, M. S., Dean, P., Indjin, D., Li, L. H., Linfield, E. H., Davies, A. G., Brünig, M., Mills, T., Rosendahl, C., Soyer, H. P. and Rakić, A. D. (2024). Terahertz in vivo imaging of human skin: Toward detection of abnormal skin pathologies. APL Bioengineering, 8 (1) 016117, 016117. doi: 10.1063/5.0190573
Khan, Bilour, Nippolainen, Ervin, SHAHINI, FATEMEH, Torniainen, Jari, MIKKONEN, SANTTU, NONAPPA, NONAPPA, Popov, Alexey, Töyräs, Juha and Afara, Isaac (2023). Refractive index of human articular cartilage varies with tissue structure and composition. Journal of the Optical Society of America A, 40 (12), 2205-2214. doi: 10.1364/josaa.498722
Kashyap, Mayuri, Torniainen, Jari, Bertling, Karl, Kundu, Urbi, Singh, Khushboo, Donose, Bogdan, Gillespie, Tim, Lim, Yah Leng, Indjin, Dragan, Li, Lian He, Linfield, Edmund, Davies, Giles, Dean, Paul, Smith, Millicent, Chapman, Scott, Bandyopadhyay, Aparajita, Sengupta, Amartya and Rakic, Aleksandar (2023). Coherent Terahertz laser feedback interferometry for hydration sensing in leaves. Optics Express, 31 (15), 23877-23888. doi: 10.1364/oe.490217
Sarin, Jaakko K., Kiema, Miika, Luoto, Emma-Sofia, Husso, Annastiina, Hedman, Marja, Laakkonen, Johanna P. and Torniainen, Jari (2023). Nondestructive evaluation of mechanical and histological properties of the human aorta with near-infrared spectroscopy. Journal of Surgical Research, 287, 82-89. doi: 10.1016/j.jss.2023.01.016
Qi, Xiaoqiong, Bertling, Karl, Stark, Mitchell S., Taimre, Thomas, Kao, Yung-Ching, Lim, Yah Leng, Han, She, O'Brien, Blake, Collins, Angus, Walsh, Michael, Torniainen, Jari, Gillespie, Timothy, Donose, Bogdan C., Dean, Paul, Li, Lian He, Linfield, Edmund H., Davies, A. Giles, Indjin, Dragan, Soyer, H. Peter and Rakic, Aleksandar D. (2023). Terahertz imaging of human skin pathologies using laser feedback interferometry with quantum cascade lasers. Biomedical Optics Express, 14 (4) ARTN 480615, 1393-1410. doi: 10.1364/boe.480615
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
Kiema, Miika, Sarin, Jaakko K., Kauhanen, S. Petteri, Torniainen, Jari, Matikka, Hanna, Luoto, Emma-Sofia, Jaakkola, Pekka, Saari, Petri, Liimatainen, Timo, Vanninen, Ritva, Ylä-Herttuala, Seppo, Hedman, Marja and Laakkonen, Johanna P. (2022). Wall shear stress predicts media degeneration and biomechanical changes in thoracic aorta. Frontiers in Physiology, 13 934941. doi: 10.3389/fphys.2022.934941
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
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
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
Shaikh, Rubina, Nippolainen, Ervin, Virtanen, Vesa, Torniainen, Jari, Rieppo, Lassi, Saarakkala, Simo, Afara, Isaac O. and Töyräs, Juha (2021). Raman spectroscopy is sensitive to biochemical changes related to various cartilage injuries. Journal of Raman Spectroscopy, 52 (4) jrs.6062, 796-804. doi: 10.1002/jrs.6062
Afara, Isaac O., Shaikh, Rubina, Nippolainen, Ervin, Querido, William, Torniainen, Jari, Sarin, Jaakko K., Kandel, Shital, Pleshko, Nancy and Töyräs, Juha (2021). Characterization of connective tissues using near-infrared spectroscopy and imaging. Nature Protocols, 16 (2), 1297-1329. doi: 10.1038/s41596-020-00468-z
Ristaniemi, Aapo, Regmi, Dristi, Mondal, Diponkor, Torniainen, Jari, Tanska, Petri, Stenroth, Lauri, Finnilä, Mikko A. J., Töyräs, Juha and Korhonen, Rami K. (2021). Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon. Journal of the Royal Society. Interface, 18 (174) 20200737, 1-11. doi: 10.1098/rsif.2020.0737
Sarin, J. K., Te Moller, N. C. R., Mohammadi, A., Prakash, M., Torniainen, J., Brommer, H., Nippolainen, E., Shaikh, R., Mäkelä, J. T. A., Korhonen, R. K., van Weeren, P. R., Afara, I. O. and Töyräs, J. (2020). Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects. Osteoarthritis and Cartilage, 29 (3), 423-432. doi: 10.1016/j.joca.2020.12.007
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
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
Sarin, Jaakko K., Torniainen, Jari, Prakash, Mithilesh, Rieppo, Lassi, Afara, Isaac O. and Toyras, Juha (2019). Dataset on equine cartilage near infrared spectra, composition, and functional properties. Scientific Data, 6 (1) 164, 164. doi: 10.1038/s41597-019-0170y
Prakash, M., Joukainen, A., Torniainen, J., Honkanen, M. K.M., Rieppo, L., Afara, I. O., Kröger, H., Töyräs, J. and Sarin, J. K. (2019). Near-infrared spectroscopy enables quantitative evaluation of human cartilage biomechanical properties during arthroscopy. Osteoarthritis and Cartilage, 27 (8), 1235-1243. doi: 10.1016/j.joca.2019.04.008
Torniainen, Jari, Ristaniemi, Aapo, Sarin, Jaakko K., Mikkonen, Santtu, Afara, Isaac O., Stenroth, Lauri, Korhonen, Rami K. and Töyräs, Juha (2019). Near infrared spectroscopic evaluation of ligament and tendon biomechanical properties. Annals of Biomedical Engineering, 47 (1), 213-222. doi: 10.1007/s10439-018-02125-9
Pakarinen, Satu, Korpela, Jussi, Torniainen, Jari, Laarni, Jari and Karvonen, Hannu (2018). Cardiac measures of nuclear power plant operator stress during simulated incident and accident scenarios. Psychophysiology, 55 (7) e13071. doi: 10.1111/psyp.13071
Henelius, Andreas and Torniainen, Jari (2018). MIDAS: Open-source framework for distributed online analysis of data streams. SoftwareX, 7, 156-161. doi: 10.1016/j.softx.2018.04.004
Cowley, Benjamin U., Korpela, Jussi and Torniainen, Jari (2017). Computational testing for automated preprocessing: A matlab toolbox to enable large scale electroencephalography data processing. PeerJ Computer Science, 2017 (3) e108. doi: 10.7717/peerj-cs.108
Ahonen, Lauri, Cowley, Benjamin, Torniainen, Jari, Ukkonen, Antti, Vihavainen, Arto and Puolamäki, Kai (2016). Cognitive collaboration found in cardiac Physiology: Study in classroom environment. PloS One, 11 (7) e0159178. doi: 10.1371/journal.pone.0159178
Cowley, Benjamin, Filetti, Marco, Lukander, Kristian, Torniainen, Jari, Henelius, Andreas, Ahonen, Lauri, Barral, Oswald, Kosunen, Ilkka, Valtonen, Teppo, Huotilainen, Minna, Ravaja, Niklas and Jacucci, Giulio (2016). The psychophysiology primer: A guide to methods and a broad review with a focus on human-computer interaction. Foundations and Trends in Human-Computer Interaction, 9 (3-4), 151-308. doi: 10.1561/1100000065
Simola, Jaana, Le Fevre, Kevin, Torniainen, Jari and Baccino, Thierry (2015). Affective processing in natural scene viewing: valence and arousal interactions in eye-fixation-related potentials. NeuroImage, 106, 21-33. doi: 10.1016/j.neuroimage.2014.11.030
Putto, Katja, Kettunen, Pyry, Torniainen, Jari, Krause, Christina M. and Sarjakoski, L. Tiina (2014). Effects of cartographic elevation visualizations and map-reading tasks on eye movements. Cartographic Journal, 51 (3), 225-236. doi: 10.1179/1743277414Y.0000000087
Simola, Jaana, Torniainen, Jari, Moisala, Mona, Kivikangas, Markus and Krause, Christina M. (2013). Eye movement related brain responses to emotional scenes during free viewing. Frontiers in Systems Neuroscience (JUL) 41, 1-16. doi: 10.3389/fnsys.2013.00041
Conference Papers
Kundu, Urbi, Tornainen, Jari, Bertling, Karl, Kashyap, Mayuri, Singh, Khushboo, Donose, Bogdan, Gillespie, Tim, Indjin, Dragan, Li, Lianhe, Linfield, Edmund, Davies, Alexander, Dean, Paul, Bandyopadhyay, Aparajita, Sengupta, Amartya and Rakic, Aleksandar (2024). Variability in plant cell water dynamics as a genetic discriminatory method using terahertz quantum cascade laser-based laser feedback interferometry. Conference on Photonic Technologies in Plant and Agricultural Science, San Francisco, CA United States, 31 January 2024. Bellingham, WA United States: SPIE. doi: 10.1117/12.3002438
Bertling, K., Kashyap, M., Torniainen, J., Kundu, U., Singh, K., Gillespie, T., Lim, Y. L., Dean, P., Indjin, D., Han, Y., Li, L., Sengupta, A., Bandyopadhyay, A., Davies, A.G., Linfield, E. H. and Rakić, A. D. (2022). Hydration imaging with THz Quantum Cascade Lasers: Towards Precision Agriculture. Conference on Optoelectronlc and Microelectronic Materials and Devices, Adelaide, SA Australia, 11-16 December 2022.
Torniainen, Jari, Afara, Isaac O., Prakash, Mithilesh, Sarin, Jaakko K., Stenroth, Lauri and Töyräs, Juha (2019). Automated preprocessing of near infrared spectroscopic data. Biophotonics Congress: Optics in the Life Sciences Congress 2019 (BODA,BRAIN,NTM,OMA,OMP), Tucson, AZ, United States, 14-17 April 2019. Washington, DC, United States: Optical Society of America. doi: 10.1364/BODA.2019.DS2A.6
Torniainen, Jari E., Ristaniemi, Aapo, Stenroth, Lauri and To¨yräs, Juha (2018). Estimating mechanical properties of bovine knee ligaments and tendons with near infrared spectroscopy. Clinical and Translational Biophotonics, TRANSLATIONAL 2018, Hollywood, FL United States, 3-6 April 2018. Washington, DC United States: The Optical Society. doi: 10.1364/TRANSLATIONAL.2018.JW3A.29
Laarni, Jari, Karvonen, Hannu, Pakarinen, Satu and Torniainen, Jari (2016). Multitasking and interruption management in control room operator work during simulated accidents. 13th International Conference of Engineering Psychology and Cognitive Ergonomics, EPCE 2016, Toronto, Canada, 17-22 July 2016. Heidelberg, Germany: Springer. doi: 10.1007/978-3-319-40030-3_30
Torniainen, Jari, Cowley, Benjamin, Henelius, Andreas, Lukander, Kristian and Pakarinen, Satu (2015). Feasibility of an electrodermal activity ring prototype as a research tool. 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Milan, Italy, 25-29 August 2015. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/EMBC.2015.7319865