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Decoupling Between Brain Activity and Cerebrospinal Fluid Movement in Neurological Disorders
Xiao Liu1,2
1Department of Biomedical Engineering, The Pennsylvania State University, Pennsylvania, USA.
Journal of Magnetic Resonance Imaging : JMRI
|November 22, 2023
Summary
Resting-state functional MRI (fMRI) reveals a connection between brain activity and cerebrospinal fluid flow, suggesting a role in brain waste clearance. This link is crucial for understanding neurodegenerative diseases and brain health.
Area of Science:
- Neuroscience
- Medical Imaging
- Physiology
Background:
- Resting-state functional MRI (fMRI) global mean signal correlates with cerebrospinal fluid (CSF) movement.
- This coupling is implicated in neurodegenerative diseases characterized by toxic protein accumulation.
Purpose of the Study:
- To review recent advancements linking spontaneous global brain activity to brain waste clearance.
- To discuss potential mechanisms by which brain dynamics influence CSF-mediated waste removal.
Main Methods:
- Review of studies focusing on the global mean resting-state fMRI signal.
- Analysis of research connecting brain activity dynamics with physiological modulations impacting waste clearance.
Main Results:
- Evidence supports highly organized global brain activity linked to arousal and memory systems.
- The global brain dynamic influences brain waste clearance via multiple pathways.
Conclusions:
- The interplay between global brain activity and CSF dynamics is a significant factor in brain waste clearance.
- Understanding this relationship offers insights into neurodegenerative disease mechanisms and potential therapeutic targets.
Keywords:
brain waste clearancecerebrospinal fluid movementgBOLD‐CSF couplingglobal brain activityglymphatic clearanceresting‐state fMRIMore Related Videos
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