Journal Articles
Pahari, Purbanka, Korkalainen, Henri, Karhu, Tuomas, Rissanen, Marika, Arnardottir, Erna Sif, Hrubos‐Strøm, Harald, Duce, Brett, Töyräs, Juha, Leppänen, Timo and Nikkonen, Sami (2022). Obstructive sleep apnea‐related intermittent hypoxaemia is associated with impaired vigilance. Journal of Sleep Research e13803, 1-9. doi: 10.1111/jsr.13803
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
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
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
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, 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 Experimental Medicine and Biology, 1384, 205-218. doi: 10.1007/978-3-031-06413-5_12
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
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
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 Paper
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