Samu Kainulainen
Associate Professor
Academy Research Fellow and Head of SmartSleep Lab
Department of Technical Physics, Faculty of Science, Forestry and Technology
Specialized in measurement and signal analytic techniques in translational research and sleep medicine.
Research groups
Publications
59/59 items-
Deep Learning-Based Assessment of Sleepiness from Fingertip Pulse Wave Analysis During Objective Daytime Testing
Rusanen, Matias; Kainulainen, Samu; Myllymaa, Sami; Leppänen, Timo; Tamisier, Renaud; Baillieul, Sébastien; Bailly, Sébastien; Pepin, Jean-Louis, 2026, Annals of biomedical engineering, [Published: 28 September 2026], 1-9. A1 Journal article (refereed), original research -
Direct Quantification of Uncertainty in Deep Learning-Based Automatic Sleep Staging
Vainikka, Miika; Huttunen, Riku; Kainulainen, Samu; Korkalainen, Henri; Rusanen, Matias, 2026, IEEE transactions on biomedical engineering, 73, 6, 2144-2154. A1 Journal article (refereed), original research -
Hypnodensity sleep metrics from fingertip photoplethysmography are better associated with daytime sleepiness and fatigue than traditional metrics from polysomnography
Rusanen, Matias; Tuyinsenge, Viateur; Muller, Sandrine; Tamisier, Renaud; Baillieul, Sébastien; Myllymaa, Sami; Kainulainen, Samu; Leppänen, Timo; Pepin, Jean-Louis; Bailly, Sébastien, 2026, Pulmonology, 32, 1, 2683326. A1 Journal article (refereed), original research -
Machine learning prediction of the change in sleepiness following continuous positive airway pressure in obstructive sleep apnea: a multi-cohort analysis
Staykov, Eric; Töyräs, Juha; Mann, Dwayne L; Leppänen, Timo; Kainulainen, Samu; Azarbarzin, Ali; Sands, Scott A; Terrill, Philip I, 2026, Sleep, [Epub ahead of print 28 Sep 2026], 1-22. A1 Journal article (refereed), original research -
RAVEN: Software for automated sleep microstructure analysis from electroencephalography
Arolaakso, Mikko; Pitkänen, Henna; Pitkänen, Minna; Rusanen, Matias; Korkalainen, Henri; Karhu, Tuomas; Häkkinen, Saila; Hiltunen, Mika; Kainulainen, Samu, 2026, Biomedical signal processing and control, 123, Part B, 110552. A1 Journal article (refereed), original research -
Respiratory event type and duration modulate PPG waveforms in OSA
Nurminen, Jutta; Hietakoste, Salla; Howarth, Timothy; Duce, Brett; Leppänen, Timo; Laitinen, Teemu; Kulkas, Antti; Kainulainen, Samu, 2026, Physiological measurement, 47, 7, 075006. A1 Journal article (refereed), original research -
Hypoxemia and arousals modulate cardiac responses to respiratory events in obstructive sleep apnea
Ebrahimian, Serajeddin; Sillanmäki, Saara; Rissanen, Marika; Staykov, Eric; Kulkas, Antti; Töyräs, Juha; Bailón, Raquel; Grote, Ludger; Bonsignore, Maria R; Baumert, Mathias; Somers, Virend K; Terrill, Philip; Leppänen, Timo; Kainulainen, Samu, 2025, Sleep, 49, 3, zsaf382. A1 Journal article (refereed), original research -
Nocturnal short-term HRV reflects impaired daytime vigilance better than overnight HRV in suspected OSA patients
Hietakoste, Salla; Karhu, Tuomas; Lombardi, Carolina; Armañac-Julián, Pablo; Bailón, Raquel; Duce, Brett; Sillanmäki, Saara; Töyräs, Juha; Leppänen, Timo; Myllymaa, Sami; Kainulainen, Samu, 2025, Sleep, 48, 4, zsae282. A1 Journal article (refereed), original research -
The interaction between comorbidities and sleep stages influences oxygen re‐saturation characteristics
Howarth, Timothy P; Hietakoste, Salla; Ebrahimian, Serajeddin; Rissanen, Marika; Kainulainen, Samu; Karhu, Tuomas, 2025, Journal of sleep research, 34, 6, e14459. A1 Journal article (refereed), original research -
Validation of manually scored multichannel frontal electroencephalography against polysomnography in a paediatric cohort
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; Arnardottir, Erna Sif, 2025, Journal of sleep research, 34, 6, e70012. A1 Journal article (refereed), original research