
Tuomas Karhu
Postdoctoral Researcher
Department of Technical Physics, Faculty of Science, Forestry and Technology
[email protected] | +358 50 473 3477
Postdoctoral researcher with interest to enhance the diagnostics of sleep disorders with advanced biosignal analysis techniques.
The topic of my PhD thesis was ”Nocturnal hypoxic load in the evaluation of the progression of sleep apnea”.
Research groups
Publications
20/20 items-
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. [First published: 04 February 2025]: A1 Journal article (refereed), original research -
A comparative analysis of unsupervised machine‐learning methods in PSG‐related phenotyping
Ghorvei, Mohammadreza; Karhu, Tuomas; Hietakoste, Salla; Ferreira‐Santos, Daniela; Hrubos‐Strøm, Harald; Islind, Anna Sigridur; Biedebach, Luka; Nikkonen, Sami; Leppänen, Timo; Rusanen, Matias. 2024. Journal of sleep research. [First published: 24 October 2024]: 1-13 A1 Journal article (refereed), original research -
Excessive daytime sleepiness is associated with relative delta frequency power among patients with mild OSA
Howarth, Timothy; Tashakori, Masoumeh; Karhu, Tuomas; Rusanen, Matias; Pitkänen, Henna; Oksenberg, Arie; Nikkonen, Sami. 2024. Frontiers in neurology. 15: . 1367860 A1 Journal article (refereed), original research -
Interhemispheric differences of electroencephalography signal characteristics in different sleep stages
Tashakori, Masoumeh; Rusanen, Matias; Karhu, Tuomas; Grote, Ludger; Nath, Rajdeep Kumar; Leppänen, Timo; Nikkonen, Sami. 2024. Sleep medicine. 117: 201-208 A1 Journal article (refereed), original research -
Nocturnal oxygen resaturation parameters are associated with cardiorespiratory comorbidities
Howarth, Timothy P; Sillanmäki, Saara; Karhu, Tuomas; Rissanen, Marika; Islind, Anna Sigridur; Hrubos-Strøm, Harald; de Chazal, Philip; Huovila, Juuso; Kainulainen, Samu; Leppänen, Timo. 2024. Sleep medicine. 118: 101-112 A1 Journal article (refereed), original research -
Verbal memory is linked to average oxygen saturation during sleep, not the apnea-hypopnea index nor novel hypoxic load variables
Thorisdottir, K; Hrubos-Strøm, H; Karhu, T; Nikkonen, S; Dammen, T; Nordhus, IH; Leppänen, T; Jónsdóttir, MK; Arnardottir, ES. 2024. Sleep medicine. 123: 29-36 A1 Journal article (refereed), original research -
Worsening hypoxic load impairs cardiorespiratory coupling
Hietakoste, Salla; Armanac-Julian, Pablo; Karhu, Tuomas; Bailon, Raquel; Sillanmaki, Saara; Toyras, Juha; Leppanen, Timo; Myllymaa, Sami; Kainulainen, Samu. 2024. abstract -
Acute cardiorespiratory coupling impairment in worsening sleep apnea-related intermittent hypoxemia
Hietakoste, Salla; Armanac-Julian, Pablo; Karhu, Tuomas; Bailon, Raquel; Sillanmäki, Saara; Töyräs, Juha; Leppänen, Timo; Myllymaa, Sami; Kainulainen, Samu. 2023. IEEE transactions on biomedical engineering. 2024; 71: 326-333 A1 Journal article (refereed), original research -
Nocturnal hypoxic load in the evaluation of the progression of sleep apnea
Karhu, Tuomas. 2023. Publications of the University of Eastern Finland. Dissertations in Science, Forestry and Technology G5 Doctoral dissertation (article) -
Oxygen resaturation rate is significantly associated with objectively assessed excessive daytime sleepiness in suspected obstructive sleep apnoea patients
Howarth, Timothy P.; Karhu, Tuomas; Kainulainen, Samu; Chen, Xin; Mahamid, Alaa; Töyräs, Juha; Leppänen, Timo. 2023. Sleep medicine. 107: 171-178 A1 Journal article (refereed), original research