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- W4307852029 abstract "Abstract Low-frequency changes in cerebral hemodynamics have recently been shown to drive cerebrospinal fluid (CSF) movement in the human brain during non-rapid eye movement (NREM) sleep and resting state wakefulness. However, whether the coupling strength between these neurofluids varies between wake and sleep states is not known. In addition, the principal origin (i.e., neuronal vs. systemic) of these slow cerebral hemodynamic oscillations in either state also remains unexplored. To investigate this, a wake/sleep study was conducted on eight young, healthy volunteers, concurrently acquiring neurofluid dynamics using functional Magnetic Resonance Imaging, neural activity using Electroencephalography, and non-neuronal systemic physiology with peripheral functional Near-Infrared Spectroscopy. Our results reveal that low-frequency cerebral hemodynamics and CSF movements are strongly coupled regardless of whether participants were awake or in light NREM sleep. Furthermore, it was also found that, while autonomic neural contributions are present only during light NREM sleep, non-neuronal systemic physiology influences neurofluid low-frquency oscillations in a significant way across both wake and sleep states. These results further our understanding regarding the low-frequency hemodynamic drivers of CSF movement in the human brain and could help inform the development of therapies for enhancing CSF circulation." @default.
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- W4307852029 date "2022-11-01" @default.
- W4307852029 modified "2023-10-11" @default.
- W4307852029 title "Neurofluid Coupling during Sleep and Wake States" @default.
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- W4307852029 doi "https://doi.org/10.1101/2022.10.31.514639" @default.
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