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  Monochromatic ultra-slow (~0.1Hz) oscillations in the human electroencephalogram and their relation to hemodynamics

Nikulin, V. V., Fedele, T., Mehnert, J., Lipp, A., Noack, C., Steinbrink, J., et al. (2014). Monochromatic ultra-slow (~0.1Hz) oscillations in the human electroencephalogram and their relation to hemodynamics. NeuroImage, 97, 71-80. doi:10.1016/j.neuroimage.2014.04.008.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-F030-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-7CCE-B
Genre: Journal Article

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 Creators:
Nikulin, Vadim V.1, 2, Author              
Fedele, Tommaso1, Author
Mehnert, Jan3, 4, 5, Author              
Lipp, Axel6, Author
Noack, Cornelia6, Author
Steinbrink, Jens3, Author
Curio, Gabriel1, 2, Author
Affiliations:
1Neurophysics Group, Department of Neurology, Charité University Medicine Berlin, Germany, ou_persistent22              
2Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
3Berlin Neuroimaging Center, Charité University Medicine Berlin, Germany, ou_persistent22              
4Department of Machine Learning, TU Berlin, Germany, ou_persistent22              
5Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634549              
6Department of Neurology, Charité University Medicine Berlin, Germany, ou_persistent22              

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Free keywords: Neuronal oscillations; EEG; NIRS; Brain hemodynamics
 Abstract: Previous studies demonstrated the presence of Monochromatic Ultra-Slow Oscillations (MUSO) in human EEG. In the present study we explored the biological origin of MUSO by simultaneous recordings of EEG, Near-Infrared Spectroscopy (NIRS), arterial blood pressure, respiration and laser Doppler flowmetry. We used a head-up tilt test in order to check whether MUSO might relate to Mayer waves in arterial blood pressure, known to be enhanced by the tilting procedure. MUSO were detected in 8 of 10 subjects during rest and showed a striking monochromatic spectrum (0.07–0.14Hz). The spatial topography of MUSO was complex, showing multiple foci variable across subjects. While the head-up tilt test increased the relative power of Mayer waves, it had no effect on MUSO. On the other hand, the relative spectral power of 0.1Hz oscillations in EEG, NIRS and blood pressure signals were positively correlated across subjects in the tilted condition. Eight subjects showed a coherence between MUSO and NIRS/arterial blood pressure. Moreover, MUSO at different electrode sites demonstrated coherence not reducible to volume conduction, thus indicating that MUSO are unlikely to be generated by one source. We related our experimental findings to known biological phenomena being generated at about 0.1Hz, i.e.: arterial blood pressure, cerebral and skin vasomotion, respiration and neuronal activity. While no definite conclusion can yet be drawn as to an exact physiological mechanism of MUSO, we suggest that these oscillations might be of a rather extraneuronal origin reflecting cerebral vasomotion.

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Language(s): eng - English
 Dates: 2014-04-022014-04-132014-08-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2014.04.008
PMID: 24732648
Other: Epub 2014
 Degree: -

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 97 Sequence Number: - Start / End Page: 71 - 80 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166