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Timo Leppänen
Timo Leppänen
University of Eastern Finland, Kuopio University Hospital
Verified email at uef.fi - Homepage
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Cited by
Year
Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea
H Korkalainen, J Aakko, S Nikkonen, S Kainulainen, A Leino, B Duce, ...
IEEE journal of biomedical and health informatics 24 (7), 2073-2081, 2019
1302019
Deep learning enables sleep staging from photoplethysmogram for patients with suspected sleep apnea
H Korkalainen, J Aakko, B Duce, S Kainulainen, A Leino, S Nikkonen, ...
Sleep 43 (11), zsaa098, 2020
1012020
Severity of desaturations reflects OSA-related daytime sleepiness better than AHI
S Kainulainen, J Töyräs, A Oksenberg, H Korkalainen, S Sefa, A Kulkas, ...
Journal of Clinical Sleep Medicine 15 (8), 1135-1142, 2019
972019
Severity of desaturation events differs between hypopnea and obstructive apnea events and is modulated by their duration in obstructive sleep apnea
A Kulkas, B Duce, T Leppänen, C Hukins, J Töyräs
Sleep and Breathing 21, 829-835, 2017
602017
Severity of individual obstruction events increases with age in patients with obstructive sleep apnea
T Leppänen, J Töyräs, E Mervaala, T Penzel, A Kulkas
Sleep medicine 37, 32-37, 2017
592017
Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea
S Nikkonen, IO Afara, T Leppänen, J Töyräs
Scientific reports 9 (1), 13200, 2019
552019
Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients
S Kainulainen, B Duce, H Korkalainen, A Oksenberg, A Leino, ...
European Respiratory Journal 55 (4), 2020
472020
Severity of individual obstruction events is gender dependent in sleep apnea
T Leppänen, A Kulkas, B Duce, E Mervaala, J Töyräs
Sleep and Breathing 21, 397-404, 2017
462017
Length of individual apnea events is increased by supine position and modulated by severity of obstructive sleep apnea
T Leppänen, J Töyräs, A Muraja-Murro, S Kupari, P Tiihonen, E Mervaala, ...
Sleep disorders 2016 (1), 9645347, 2016
462016
Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes
L Kalevo, T Miettinen, A Leino, S Kainulainen, H Korkalainen, K Myllymaa, ...
IEEE Access 8, 50934-50943, 2020
442020
The Sleep Revolution project: the concept and objectives
ES Arnardottir, AS Islind, M Óskarsdottir, KA Ólafsdottir, E August, ...
Journal of sleep research 31 (4), e13630, 2022
382022
Increase in body mass index decreases duration of apneas and hypopneas in obstructive sleep apnea
T Leppänen, A Kulkas, E Mervaala, J Töyräs
Respiratory care 64 (1), 77-84, 2019
382019
Prevalence and characteristics of positional obstructive sleep apnea (POSA) in patients with severe OSA
A Oksenberg, N Gadoth, J Töyräs, T Leppänen
Sleep and Breathing 24, 551-559, 2020
372020
Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease
A Leino, S Nikkonen, S Kainulainen, H Korkalainen, J Töyräs, S Myllymaa, ...
Sleep Medicine 79, 71-78, 2021
342021
Automatic respiratory event scoring in obstructive sleep apnea using a long short-term memory neural network
S Nikkonen, H Korkalainen, A Leino, S Myllymaa, B Duce, T Leppänen, ...
IEEE Journal of Biomedical and Health Informatics 25 (8), 2917-2927, 2021
332021
Assessment of obstructive sleep apnea-related sleep fragmentation utilizing deep learning-based sleep staging from photoplethysmography
R Huttunen, T Leppänen, B Duce, A Oksenberg, S Myllymaa, J Töyräs, ...
Sleep 44 (10), zsab142, 2021
322021
Longer apneas and hypopneas are associated with greater ultra-short-term HRV in obstructive sleep apnea
S Hietakoste, H Korkalainen, S Kainulainen, S Sillanmäki, S Nikkonen, ...
Scientific reports 10 (1), 21556, 2020
292020
Effect of different oxygen desaturation threshold levels on hypopnea scoring and classification of severity of sleep apnea
S Myllymaa, K Myllymaa, S Kupari, A Kulkas, T Leppänen, P Tiihonen, ...
Sleep and Breathing 19, 947-954, 2015
292015
Amount of weight loss or gain influences the severity of respiratory events in sleep apnea
A Kulkas, T Leppänen, J Sahlman, P Tiihonen, E Mervaala, J Kokkarinen, ...
Medical & biological engineering & computing 53, 975-988, 2015
282015
Detailed assessment of sleep architecture with deep learning and shorter epoch-to-epoch duration reveals sleep fragmentation of patients with obstructive sleep apnea
H Korkalainen, T Leppänen, B Duce, S Kainulainen, J Aakko, A Leino, ...
IEEE journal of biomedical and health informatics 25 (7), 2567-2574, 2020
272020
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