Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Johanna Tuunanen"'
Autor:
Johanna Tuunanen, Heta Helakari, Niko Huotari, Tommi Väyrynen, Matti Järvelä, Janne Kananen, Annastiina Kivipää, Lauri Raitamaa, Seyed-Mohsen Ebrahimi, Mika Kallio, Johanna Piispala, Vesa Kiviniemi, Vesa Korhonen
Publikováno v:
Frontiers in Neuroscience, Vol 18 (2024)
IntroductionThe cerebrospinal fluid dynamics in the human brain are driven by physiological pulsations, including cardiovascular pulses and very low-frequency (< 0.1 Hz) vasomotor waves. Ultrafast functional magnetic resonance imaging (fMRI) facilita
Externí odkaz:
https://doaj.org/article/93d72412edbf40c484e004635eb38365
Autor:
Seyed-Mohsen Ebrahimi, Johanna Tuunanen, Ville Saarela, Marja Honkamo, Niko Huotari, Lauri Raitamaa, Vesa Korhonen, Heta Helakari, Matti Järvelä, Mika Kaakinen, Lauri Eklund, Vesa Kiviniemi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract The eye possesses a paravascular solute transport pathway that is driven by physiological pulsations, resembling the brain glymphatic pathway. We developed synchronous multimodal imaging tools aimed at measuring the driving pulsations of the
Externí odkaz:
https://doaj.org/article/4a30b41aef4d4e26a4dda2aa0c015305
Autor:
Heta Helakari, Matti Järvelä, Tommi Väyrynen, Johanna Tuunanen, Johanna Piispala, Mika Kallio, Seyed Mohsen Ebrahimi, Valter Poltojainen, Janne Kananen, Ahmed Elabasy, Niko Huotari, Lauri Raitamaa, Timo Tuovinen, Vesa Korhonen, Maiken Nedergaard, Vesa Kiviniemi
Publikováno v:
Frontiers in Neuroscience, Vol 17 (2023)
IntroductionSleep increases brain fluid transport and the power of pulsations driving the fluids. We investigated how sleep deprivation or electrophysiologically different stages of non-rapid-eye-movement (NREM) sleep affect the human brain pulsation
Externí odkaz:
https://doaj.org/article/b860f660bf1b47018ea5271fb65c137f
Autor:
Niko Huotari, Johanna Tuunanen, Lauri Raitamaa, Ville Raatikainen, Janne Kananen, Heta Helakari, Timo Tuovinen, Matti Järvelä, Vesa Kiviniemi, Vesa Korhonen
Publikováno v:
Frontiers in Neuroscience, Vol 16 (2022)
The physiological pulsations that drive tissue fluid homeostasis are not well characterized during brain activation. Therefore, we used fast magnetic resonance encephalography (MREG) fMRI to measure full band (0–5 Hz) blood oxygen level-dependent (
Externí odkaz:
https://doaj.org/article/7e47a123f8f0464f978990c062d14062
Autor:
Seyed-Mohsen, Ebrahimi, Johanna, Tuunanen, Ville, Saarela, Marja, Honkamo, Niko, Huotari, Lauri, Raitamaa, Vesa, Korhonen, Heta, Helakari, Mika, Kaakinen, Lauri, Eklund, Vesa, Kiviniemi
Recent research shows the eye has a paravascular solute transport pathway driven by physiological pulsations resembling the brain. we developed synchronous multimodal imaging tools aimed at measuring the driving pulsations of the human eye. We used a
Externí odkaz:
http://arxiv.org/abs/2304.12629
Autor:
Tommi Väyrynen, Heta Helakari, Vesa Korhonen, Johanna Tuunanen, Niko Huotari, Johanna Piispala, Mika Kallio, Lauri Raitamaa, Janne Kananen, Matti Järvelä, J. Matias Palva, Vesa Kiviniemi
Infra-slow fluctuations (ISFs, 0.008-0.1 Hz) characterize hemodynamic and electric potential signals from the human brain. ISFs are known to correlate with the amplitude dynamics of fast (> 1 Hz) neuronal oscillations, and may arise from permeability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc7e1d381e5dec3fcf54fbdf331eae2f
https://doi.org/10.1101/2023.01.20.524831
https://doi.org/10.1101/2023.01.20.524831
Autor:
Niko, Huotari, Johanna, Tuunanen, Lauri, Raitamaa, Ville, Raatikainen, Janne, Kananen, Heta, Helakari, Timo, Tuovinen, Matti, Järvelä, Vesa, Kiviniemi, Vesa, Korhonen
Publikováno v:
Frontiers in neuroscience. 16
The physiological pulsations that drive tissue fluid homeostasis are not well characterized during brain activation. Therefore, we used fast magnetic resonance encephalography (MREG) fMRI to measure full band (0-5 Hz) blood oxygen level-dependent (BO
Autor:
Heta, Helakari, Vesa, Korhonen, Sebastian C, Holst, Johanna, Piispala, Mika, Kallio, Tommi, Väyrynen, Niko, Huotari, Lauri, Raitamaa, Johanna, Tuunanen, Janne, Kananen, Matti, Järvelä, Timo, Tuovinen, Ville, Raatikainen, Viola, Borchardt, Hannu, Kinnunen, Maiken, Nedergaard, Vesa, Kiviniemi
Publikováno v:
The Journal of neuroscience : the official journal of the Society for Neuroscience. 42(12)
The physiological underpinnings of the necessity of sleep remain uncertain. Recent evidence suggests that sleep increases the convection of cerebrospinal fluid (CSF) and promotes the export of interstitial solutes, thus providing a framework to expla