Dr Timo Leppanen
Honorary Associate Professor
School of Electrical Engineering and Computer Science
Book Chapters
Leppänen, Timo, Kainulainen, Samu, Korkalainen, Henri, Sillanmäki, Saara, Kulkas, Antti, Töyräs, Juha and Nikkonen, Sami (2023). Correction to: 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. C1-C1) edited by Thomas Penzel and Roberto Hornero. Cham, Switzerland: Springer International Publishing. doi: 10.1007/978-3-031-06413-5_23
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
Journal Articles
Pahari, Purbanka, Schmitz, Lisa, Richert, Elena, Jóhannsdóttir, Kamilla Rún, Kristbergsdóttir, Hlín, Korkalainen, Henri, Töyräs, Juha, Leppänen, Timo, Nikkonen, Sami, Arnardottir, Erna Sif and Islind, Anna Sigridur (2025). A novel mobile application to examine impaired vigilance through digital means. Scientific Reports, 15 (1) 39115, 1-8. doi: 10.1038/s41598-025-23155-z
Rusanen, Matias, Jouan, Gabriel, Huttunen, Riku, Nikkonen, Sami, Sigurðardóttir, Sigríður, Töyräs, Juha, Duce, Brett, Myllymaa, Sami, Arnardottir, Erna Sif, Leppänen, Timo, Islind, Anna Sigridur, Kainulainen, Samu and Korkalainen, Henri (2025). Retrospective validation of automatic sleep analysis with grey areas model for human‐in‐the‐loop scoring approach. Journal of Sleep Research, 34 (3) e14362, 1-13. doi: 10.1111/jsr.14362
Duce, Brett L., Kulkas, Antti E., Leppänen, Timo T., Oksenberg, Arie, Töyräs, Juha and Hukins, Craig A. (2025). Community prevalence of positional obstructive sleep apnea. Journal of Clinical Sleep Medicine, 21 (5), 875-882. doi: 10.5664/jcsm.11584
Sigurdardottir, Sigridur, Pitkänen, Henna, Korkalainen, Henri, Kainulainen, Samu, Serwatko, Marta, Olafsdottir, Kristin A., Sigurðardóttir, Sigurveig Þ., Clausen, Michael, Somaskandhan, Pranavan, Stražišar, Barbara G., Leppänen, Timo and Arnardottir, Erna Sif (2025). Validation of manually scored multichannel frontal electroencephalography against polysomnography in a paediatric cohort. Journal of Sleep Research, 34 (6) e70012, e70012. doi: 10.1111/jsr.70012
Hietakoste, Salla, Karhu, Tuomas, Lombardi, Carolina, Armañac-Julián, Pablo, Bailón, Raquel, Duce, Brett, Sillanmäki, Saara, Töyräs, Juha, Leppänen, Timo, Myllymaa, Sami and Kainulainen, Samu (2024). Nocturnal short-term HRV reflects impaired daytime vigilance better than overnight HRV in suspected OSA patients. Sleep, 48 (4) zsae282. doi: 10.1093/sleep/zsae282
Pitkänen, Minna, Pitkänen, Henna, Nath, Rajdeep Kumar, Nikkonen, Sami, Kainulainen, Samu, Korkalainen, Henri, Ólafsdóttir, Kristín Anna, Arnardottir, Erna Sif, Sigurdardottir, Sigridur, Penzel, Thomas, Fanfulla, Francesco, Anttalainen, Ulla, Saaresranta, Tarja, Grote, Ludger, Hedner, Jan, Staats, Richard, Töyräs, Juha and Leppänen, Timo (2024). Temporal and sleep stage‐dependent agreement in manual scoring of respiratory events. Journal of Sleep Research, 34 (3) e14391, e14391. doi: 10.1111/jsr.14391
Thorisdottir, K., Hrubos-Strøm, H., Karhu, T., Nikkonen, S., Dammen, T., Nordhus, I. H., Leppänen, T., Jónsdóttir, M. K. and Arnardottir, E. S. (2024). Verbal memory is linked to average oxygen saturation during sleep, not the apnea-hypopnea index nor novel hypoxic load variables. Sleep Medicine, 123, 29-36. doi: 10.1016/j.sleep.2024.08.028
Sillanmäki, Saara, Ebrahimian, Serajeddin, Hietakoste, Salla, Hernando, David, Bailon, Raquel, Leppänen, Timo and Kainulainen, Samu (2024). Hypoxaemic load in sleep apnoea is associated with acute changes in T-wave amplitude. ERJ Open Research, 10 (5) 00341-2024, 1-11. doi: 10.1183/23120541.00341-2024
Howarth, Timothy P., Sillanmäki, Saara, Karhu, Tuomas, Rissanen, Marika, Islind, Anna Sigridur, Hrubos-Strøm, Harald, de Chazal, Philip, Huovila, Juuso, Kainulainen, Samu and Leppänen, Timo (2024). Nocturnal oxygen resaturation parameters are associated with cardiorespiratory comorbidities. Sleep Medicine, 118, 101-112. doi: 10.1016/j.sleep.2024.03.047
Chen, Xin, Leppänen, Timo, Kainulainen, Samu, Howarth, Timothy P., Oksenberg, Arie, Töyräs, Juha, Terrill, Philip I. and Korkalainen, Henri (2024). Sleep stage continuity is associated with objective daytime sleepiness in patients with suspected obstructive sleep apnea. Journal of Clinical Sleep Medicine, 20 (10), 1595-1606. doi: 10.5664/jcsm.11198
Tashakori, Masoumeh, Rusanen, Matias, Karhu, Tuomas, Grote, Ludger, Nath, Rajdeep Kumar, Leppänen, Timo and Nikkonen, Sami (2024). Interhemispheric differences of electroencephalography signal characteristics in different sleep stages. Sleep Medicine, 117, 201-208. doi: 10.1016/j.sleep.2024.03.024
Staykov, Eric, Mann, Dwayne L., Duce, Brett, Kainulainen, Samu, Leppänen, Timo, Töyräs, Juha, Azarbarzin, Ali, Georgeson, Thomas, Sands, Scott A. and Terrill, Philip I. (2024). Increased flow limitation during sleep is associated with increased psychomotor vigilance task lapses in individuals with suspected obstructive sleep apnea. CHEST, 165 (4), 990-1003. doi: 10.1016/j.chest.2023.11.031
Pahari, Purbanka, Korkalainen, Henri, Karhu, Tuomas, Arnardottir, Erna Sif, Töyräs, Juha, Leppänen, Timo and Nikkonen, Sami (2024). Reaction time in psychomotor vigilance task is related to hypoxic load in males with sleep apnea. Journal of Sleep Research, 33 (2) e13988, e13988. doi: 10.1111/jsr.13988
Pahari, Purbanka, Korkalainen, Henri, Arnardóttir, Erna Sif, Islind, Anna Sigridur, August, Elias, Oksenberg, Arie, Töyräs, Juha, Leppänen, Timo and Nikkonen, Sami (2024). Prolonged lung-to-finger circulation time indicates an increased risk of intermittent hypoxemia in sleep apnea patients. ERJ Open Research, 10 (4) 01051-2023, 1-12. doi: 10.1183/23120541.01051-2023
Staykov, Eric, Mann, Dwayne L., Leppaenen, Timo, Toeyraes, Juha, Kainulainen, Samu, Azarbarzin, Ali, Duce, Brett, Sands, Scott A., Terrill, Philip and The STAGES Cohort Investigator Group (2024). Increased flow limitation during sleep is associated with decreased psychomotor vigilance task performance in individuals with suspected obstructive sleep apnea: a multi-cohort study. Sleep, 47 (6) zsae077. doi: 10.1093/sleep/zsae077
Fridgeirsdottir, Katrin Y., Olafsdottir, Kristin A., Islind, Anna Sigridur, Leppänen, Timo, Arnardottir, Erna S. and Saavedra, Jose M. (2024). The role of physical activity on obstructive sleep apnea severity and hypoxic load, and the mismatch between subjective and objective physical activity assessments. Journal of Sleep Research, 33 (6) e14195, e14195. doi: 10.1111/jsr.14195
Ebrahimian, Serajeddin, Sillanmäki, Saara, Hietakoste, Salla, Kulkas, Antti, Töyräs, Juha, Bailon, Raquel, Hernando, David, Lombardi, Carolina, Grote, Ludger, Bonsignore, Maria R, Saaresranta, Tarja, Pépin, Jean-Louis, Leppänen, Timo and Kainulainen, Samu (2024). Beat-to-beat cardiac repolarization lability increases during hypoxemia and arousals in obstructive sleep apnea patients. American Journal of Physiology-Heart and Circulatory Physiology, 326 (5), H1094-H1104. doi: 10.1152/ajpheart.00760.2023
Luukinen, Mieli, Pitkänen, Henna, Leppänen, Timo, Töyräs, Juha, Islind, Anna Sigridur, Kainulainen, Samu and Korkalainen, Henri (2024). Variation in the photoplethysmogram response to arousal from sleep depending on the cause of arousal and the presence of desaturation. IEEE Journal of Translational Engineering in Health and Medicine, 12, 328-339. doi: 10.1109/jtehm.2024.3349916
Hietakoste, Salla, Armañac-Julián, Pablo, Karhu, Tuomas, Bailón, Raquel, Sillanmäki, Saara, Töyräs, Juha, Leppänen, Timo, Myllymaa, Sami and Kainulainen, Samu (2024). Acute cardiorespiratory coupling impairment in worsening sleep apnea-related intermittent hypoxemia. IEEE Transactions on Biomedical Engineering, 71 (1), 326-333. doi: 10.1109/tbme.2023.3300079
Khan, Zaeed, Rusanen, Matias, Arvonen, Miika, Leppanen, Timo and Sarkka, Simo (2024). Joint use of a low thermal resolution thermal camera and an RGB camera for respiration measurement. IEEE Transactions on Instrumentation and Measurement, 73 5003314, 1-14. doi: 10.1109/TIM.2023.3334345
Ghorvei, Mohammadreza, Karhu, Tuomas, Hietakoste, Salla, Ferreira-Santos, Daniela, Hrubos-Strøm, Harald, Islind, Anna Sigridur, Biedebach, Luka, Nikkonen, Sami, Leppänen, Timo and Rusanen, Matias (2024). A comparative analysis of unsupervised machine-learning methods in PSG-related phenotyping. Journal of Sleep Research, 34 (3) e14349, 1-13. doi: 10.1111/jsr.14349
Pitkänen, Henna, Nikkonen, Sami, Rissanen, Marika, Islind, Anna Sigridur, Gretarsdottir, Heidur, Arnardottir, Erna Sif, Leppänen, Timo and Korkalainen, Henri (2023). Multi-centre arousal scoring agreement in the Sleep Revolution. Journal of Sleep Research, 33 (4) e14127, e14127. doi: 10.1111/jsr.14127
Pitkänen, Minna, Nath, Rajdeep Kumar, Korkalainen, Henri, Nikkonen, Sami, Mahamid, Alaa, Oksenberg, Arie, Duce, Brett, Töyräs, Juha, Kainulainen, Samu and Leppänen, Timo (2023). Respiratory event index underestimates severity of sleep apnea compared to apnea-hypopnea index. Sleep Advances, 5 (1) zpad054, 1-9. doi: 10.1093/sleepadvances/zpad054
Alakörkkö, Ida, Törmälehto, Soili, Leppänen, Timo, McNicholas, Walter T., Arnardottir, Erna S. and Sund, Reijo (2023). The economic cost of obstructive sleep apnea: a systematic review. Sleep Medicine Reviews, 72 101854, 101854. doi: 10.1016/j.smrv.2023.101854
Korkalainen, Henri, Kainulainen, Samu, Islind, Anna Sigridur, Óskarsdóttir, María, Strassberger, Christian, Nikkonen, Sami, Töyräs, Juha, Kulkas, Antti, Grote, Ludger, Hedner, Jan, Sund, Reijo, Hrubos-Strom, Harald, Saavedra, Jose M., Ólafsdóttir, Kristín Anna, Ágústsson, Jón S., Terrill, Philip I., McNicholas, Walter T., Arnardóttir, Erna Sif, Leppänen, Timo and On behalf of SLEEP REVOLUTION (2023). Review and perspective on sleep-disordered breathing research and translation to clinics. Sleep Medicine Reviews, 73 101874, 1-12. doi: 10.1016/j.smrv.2023.101874
Pires, Gabriel Natan, Arnardóttir, Erna Sif, Islind, Anna Sigridur, Leppänen, Timo and McNicholas, Walter T. (2023). Consumer sleep technology for the screening of obstructive sleep apnea and snoring: current status and a protocol for a systematic review and meta-analysis of diagnostic test accuracy. Journal of Sleep Research, 32 (4) e13819, 1-20. doi: 10.1111/jsr.13819
McNicholas, Walter T., Arnardottir, Erna Sif, Leppänen, Timo, Schiza, Sophia and Randerath, Winfried (2023). CPAP therapy for obstructive sleep apnoea: persisting challenges in outcome assessment. European Respiratory Journal, 62 (1) 2300182, 2300182. doi: 10.1183/13993003.00182-2023
Howarth, Timothy P., Karhu, Tuomas, Kainulainen, Samu, Chen, Xin, Mahamid, Alaa, Töyräs, Juha and Leppänen, Timo (2023). Oxygen resaturation rate is significantly associated with objectively assessed excessive daytime sleepiness in suspected obstructive sleep apnoea patients. Sleep Medicine, 107, 171-178. doi: 10.1016/j.sleep.2023.04.027
Nikkonen, Sami, Somaskandhan, Pranavan, Korkalainen, Henri, Kainulainen, Samu, Terrill, Philip I., Gretarsdottir, Heidur, Sigurdardottir, Sigridur, Olafsdottir, Kristin Anna, Islind, Anna Sigridur, Óskarsdóttir, María, Arnardóttir, Erna Sif and Leppänen, Timo (2023). Multicentre sleep‐stage scoring agreement in the Sleep Revolution project. Journal of Sleep Research, 33 (1) e13956, 1-13. doi: 10.1111/jsr.13956
Pahari, Purbanka, Korkalainen, Henri, Karhu, Tuomas, Rissanen, Marika, Arnardottir, Erna Sif, Hrubos‐Strøm, Harald, Duce, Brett, Töyräs, Juha, Leppänen, Timo and Nikkonen, Sami (2023). Obstructive sleep apnea‐related intermittent hypoxaemia is associated with impaired vigilance. Journal of Sleep Research, 32 (3) e13803, 1-9. doi: 10.1111/jsr.13803
Varis, Mikke, Karhu, Tuomas, Leppänen, Timo and Nikkonen, Sami (2023). Utilizing Envelope Analysis of a Nasal Pressure Signal for Sleep Apnea Severity Estimation. Diagnostics, 13 (10) 1776, 1-12. doi: 10.3390/diagnostics13101776
Somaskandhan, Pranavan, Leppänen, Timo, Terrill, Philip I., Sigurdardottir, Sigridur, Arnardottir, Erna Sif, Ólafsdóttir, Kristín A., Serwatko, Marta, Sigurðardóttir, Sigurveig Þ., Clausen, Michael, Töyräs, Juha and Korkalainen, Henri (2023). Deep learning-based algorithm accurately classifies sleep stages in preadolescent children with sleep-disordered breathing symptoms and age-matched controls. Frontiers in Neurology, 14 1162998, 1-12. doi: 10.3389/fneur.2023.1162998
Oksenberg, Arie and Leppänen, Timo (2023). Duration of respiratory events in obstructive sleep apnea: Factors influencing the duration of respiratory events. Sleep Medicine Reviews, 68 101729, 1-7. doi: 10.1016/j.smrv.2022.101729
Oksenberg, Arie and Leppänen, Timo (2023). Duration of respiratory events in obstructive sleep apnea: In search of paradoxical results. Sleep Medicine Reviews, 68 101728, 1-10. doi: 10.1016/j.smrv.2022.101728
Mendonca, Fabio, Mostafa, Sheikh Shanawaz, Gupta, Ankit, Arnardottir, Erna Sif, Leppänen, Timo, Morgado-Dias, Fernando and Ravelo-Garcia, Antonio G. (2023). A-phase index: an alternative view for sleep stability analysis based on automatic detection of the A-phases from the cyclic alternating pattern. Sleep, 46 (1) zsac217. doi: 10.1093/sleep/zsac217
Karhu, Tuomas, Leppänen, Timo, Korkalainen, Henri, Myllymaa, Sami, Duce, Brett, Töyräs, Juha and Nikkonen, Sami (2022). Desaturation event scoring criteria affect the perceived severity of nocturnal hypoxic load. Sleep Medicine, 100, 479-486. doi: 10.1016/j.sleep.2022.09.024
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
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
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
Ebrahimian, Serajeddin, Nahvi, Ali, Tashakori, Masoumeh, Salmanzadeh, Hamed, Mohseni, Omid and Leppänen, Timo (2022). Multi-Level Classification of Driver Drowsiness by Simultaneous Analysis of ECG and Respiration Signals Using Deep Neural Networks. International Journal of Environmental Research and Public Health, 19 (17) 10736, 1-17. doi: 10.3390/ijerph191710736
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
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
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
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
Leppänen, Timo, Varon, Carolina, de Zambotti, Massimiliano and Myllymaa, Sami (2022). Editorial: Machine Learning and Wearable Technology in Sleep Medicine. Frontiers in Digital Health, 4 845879, 1-2. doi: 10.3389/fdgth.2022.845879
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
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
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
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
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
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
Conference Papers
Hietakoste, Salla, Armañac-Julián, Pablo, Karhu, Tuomas, Bailón, Raquel, Sillanmäki, Saara, Töyräs, Juha, Leppänen, Timo, Myllymaa, Sami and Kainulainen, Samu (2024). Worsening hypoxic load impairs cardiorespiratory coupling. 2024 13th Conference of the European Study Group on Cardiovascular Oscillations: Physiologically-Guided Signal Processing of Cardiovascular and Cerebrovascular Oscillations, ESGCO 2024, Zaragoza, Spain, 23-25 October 2024. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/esgco63003.2024.10767029
Somaskandhan, P., Korkalainen, H., Leppänen, T., Töyräs, J., Melehan, K., Wilson, D., Ruehland, W., Mann, D. and Terrill, P. (2024). O004 Incorporating arousals into sleep vs. wakefulness classification outperforms traditional binary classification at 1-second epoch resolution. Sleep DownUnder 2024, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.004
Staykov, E., Mann, D., Duce, B., Kainulainen, S., Leppänen, T., Töyräs, J., Azarbarzin, A., Sands, S. and Terrill, P. (2024). Ventilatory burden predicts change in self‑reported sleepiness following continuous positive airway pressure treatment in obstructive sleep apnoea. 2024 Australasian Sleep Association, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.090
Ebrahimian, S., Sillanmäki, S., Rissanen, M., Staykov, E., Grote, L., Bonsignore, M., Baumert, M., Leppanen, T. and Kainulainen, S. (2024). Hypoxemia and arousals modulate nocturnal respiratory event-related cardiac function variations in obstructive sleep apnea patients. 2024 Australasian Sleep Association, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.052
Zhang, J., Mann, D., Leppänen, T., Sands, S. and Terrill, P. (2024). Development and Evaluation of Two Non-Invasive Approaches for Estimating Breath-by-Breath Ventilatory Drive in Obstructive Sleep Apnea Patients. Sleep DownUnder 2024, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.034
Hrubos-Strøm, H., Øverby, T.C., Sigurdardottir, F., Feng, X., Nikkonen, S., Korkalainen, H., Leppanen, T., Töyräs, J. and Arnardottir, E.S. (2024). Comparing novel electrophysiological biomarkers and circulating cardiac biomarkers in predicting cardiovascular mortality and all-cause mortality in the Akershus Sleep Apnea (ASAP) epidemiological cohort. 17th World Sleep Congress, Rio de Janeiro, Brazil, 20-25 October 2023. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.sleep.2023.11.910
Sigurdardottir, S., Pitkänen, H., Korkalainen, H., Kainulainen, S., Serwatko, M., Olafsdottir, K.A., Sigurðardóttir, S.þ., Clausen, M., Somaskandhan, P., Stražišar, B.G., Leppänen, T. and Arnardóttir, E.S. (2024). Multi-channel frontal EEG – validation on manual sleep staging in a pediatric cohort. 17th World Sleep Congress, Rio de Janeiro, Brazil, 20-25 October 2023. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.sleep.2023.11.749
Behbahani, S., Staykov, E., Wilson, D., Leppänen, T., Mann, D. and Terrill, P. (2023). Assessment of heart rate variability during respiratory events and arousals using symbolic dynamics. 2023 Sleep DownUnder, Adelaide, SA Australia, 8-11 November 2023. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpad035.040
Staykov, Eric, Mann, Dwayne L, Kainulainen, Samu, Duce, Brett, Leppanen, Timo, Toyras, Juha, Sands, Scott A. and Terrill, Philip I. (2023). Nasal pressure derived airflow limitation and ventilation measurements are resilient to reduced signal quality. 45th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Sydney, Australia, 24-27 July 2023. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/embc40787.2023.10340215
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
Somaskandhan, P., Terrill, P., Korkalainen, H., Kainulainen, S., Leppänen, T., Islind, A., Grétarsdóttir, H. and Nikkonen, S. (2022). A detailed analysis of multicentric sleep staging inter-rater variabilities. 33rd annual scientific meeting of Australasian Sleep Association (ASA) & Australian and New Zealand Sleep Science Association (ANZSSA) Sleep DownUnder 2022, Brisbane, QLD Australia, 8-11 November 2022. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpac029.182
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