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pro vyhledávání: '"Fast fMRI"'
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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:
Jingyuan E. Chen, Gary H. Glover, Nina E. Fultz, Bruce R. Rosen, Jonathan R. Polimeni, Laura D. Lewis
Publikováno v:
NeuroImage, Vol 245, Iss , Pp 118658- (2021)
Recent studies have demonstrated that fast fMRI can track neural activity well above the temporal limit predicted by the canonical hemodynamic response model. While these findings are promising, the biophysical mechanisms underlying these fast fMRI p
Externí odkaz:
https://doaj.org/article/e3d68c6dfff74ac8bd3787b64e8f8612
Publikováno v:
NeuroImage, Vol 205, Iss , Pp 116231- (2020)
Recent improvements in the speed and sensitivity of fMRI acquisition techniques suggest that fast fMRI can be used to detect and precisely localize sub-second neural dynamics. This enhanced temporal resolution has enormous potential for neuroscientis
Externí odkaz:
https://doaj.org/article/7fbdb3c7df7c418fafba858e92722c55
Autor:
Vesa Kiviniemi, Lauri Raitamaa, Niko Huotari, Heta Helakari, Janne Kananen, Vesa Korhonen, Anssi Koivula
Publikováno v:
Human Brain Mapping
Physiological pulsations have been shown to affect the global blood oxygen level dependent (BOLD) signal in human brain. While these pulsations have previously been regarded as noise, recent studies show their potential as biomarkers of brain patholo
Publikováno v:
Magnetic Resonance in Medicine
PURPOSE In rapidly acquired functional MRI (fast fMRI) data, the noise serial correlations (SC) can produce problematically overestimated T-statistics which lead to invalid statistical inferences. This study aims to evaluate and improve the accuracy
Autor:
Helakari, H. (Heta), Korhonen, V. (Vesa), Holst, S. C. (Sebastian C.), Piispala, J. (Johanna), Kallio, M. (Mika), Väyrynen, T. (Tommi), Huotari, N. (Niko), Raitamaa, L. (Lauri), Tuunanen, J. (Johanna), Kananen, J. (Janne), Järvelä, M. (Matti), Tuovinen, T. (Timo), Raatikainen, V. (Ville), Borchardt, V. (Viola), Kinnunen, H. (Hannu), Nedergaard, M. (Maiken), Kiviniemi, V. (Vesa)
Publikováno v:
Helakari, H, Korhonen, V, Holst, S C, Piispala, J, Kallio, M, Väyrynen, T, Huotari, N, Raitamaa, L, Tuunanen, J, Kananen, J, Järvelä, M, Tuovinen, T, Raatikainen, V, Borchardt, V, Kinnunen, H, Nedergaard, M & Kiviniemi, V 2022, ' Human NREM Sleep Promotes Brain-Wide Vasomotor and Respiratory Pulsations ', Journal of Neuroscience, vol. 42, no. 12, pp. 2503-2515 . https://doi.org/10.1523/JNEUROSCI.0934-21.2022
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::755a6f82d478f155cb9d06bbabb3f433
https://curis.ku.dk/portal/da/publications/human-nrem-sleep-promotes-brainwide-vasomotor-and-respiratory-pulsations(f126f92b-915d-4cac-b0b6-65c26c8bc4b8).html
https://curis.ku.dk/portal/da/publications/human-nrem-sleep-promotes-brainwide-vasomotor-and-respiratory-pulsations(f126f92b-915d-4cac-b0b6-65c26c8bc4b8).html
Autor:
Huotari, N. (Niko), Tuunanen, J. (Johanna), Raitamaa, L. (Lauri), Raatikainen, V. (Ville), Kananen, J. (Janne), Helakari, H. (Heta), Tuovinen, T. (Timo), Järvelä, M. (Matti), Kiviniemi, V. (Vesa), Korhonen, V. (Vesa)
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://explore.openaire.eu/search/publication?articleId=od______2423::e6c4b7c10d7c1a53399e5050ae1e872d
http://urn.fi/urn:nbn:fi-fe2022052037381
http://urn.fi/urn:nbn:fi-fe2022052037381
Autor:
Kananen, J. (Janne), Järvelä, M. (Matti), Korhonen, V. (Vesa), Tuovinen, T. (Timo), Huotari, N. (Niko), Raitamaa, L. (Lauri), Helakari, H. (Heta), Väyrynen, T. (Tommi), Raatikainen, V. (Ville), Nedergaard, M. (Maiken), Ansakorpi, H. (Hanna), Jacobs, J. (Julia), LeVan, P. (Pierre), Kiviniemi, V. (Vesa)
Publikováno v:
Kananen, J, Järvelä, M, Korhonen, V, Tuovinen, T, Huotari, N, Raitamaa, L, Helakari, H, Väyrynen, T, Raatikainen, V, Nedergaard, M, Ansakorpi, H, Jacobs, J, LeVan, P & Kiviniemi, V 2022, ' Increased interictal synchronicity of respiratory related brain pulsations in epilepsy ', Journal of Cerebral Blood Flow and Metabolism, vol. 42, no. 10, pp. 1840-1853 . https://doi.org/10.1177/0271678X221099703
Respiratory brain pulsations have recently been shown to drive electrophysiological brain activity in patients with epilepsy. Furthermore, functional neuroimaging indicates that respiratory brain pulsations have increased variability and amplitude in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::818b8af7b32e27c058fbfa17608452ce
https://curis.ku.dk/portal/da/publications/increased-interictal-synchronicity-of-respiratory-related-brain-pulsations-in-epilepsy(9e354d1b-4320-43ec-b7c3-ffb077aaf287).html
https://curis.ku.dk/portal/da/publications/increased-interictal-synchronicity-of-respiratory-related-brain-pulsations-in-epilepsy(9e354d1b-4320-43ec-b7c3-ffb077aaf287).html
Autor:
Jonathan R. Polimeni, Jingyuan E. Chen, Bruce R. Rosen, Nina E. Fultz, Gary H. Glover, Laura D. Lewis
Publikováno v:
NeuroImage, Vol 245, Iss, Pp 118658-(2021)
Recent studies have demonstrated that fast fMRI can track neural activity well above the temporal limit predicted by the canonical hemodynamic response model. While these findings are promising, the biophysical mechanisms underlying these fast fMRI p