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Disassociating cerebral vasomotion from low frequency spontaneous neurovascular coupling
Runchong Wang1, Priya Patel1, Luke Boorman2
1School of Psychology, University of Sheffield, Sheffield, UK.
Scientific Reports
|December 18, 2025
Summary
Cerebral vasomotion, or blood vessel oscillations, originates in the arterial tree and exhibits distinct patterns across the brain. This vascular activity is linked to low tissue oxygen and is independent of neural activity.
Area of Science:
- Neuroscience
- Vascular Biology
- Cerebrovascular Physiology
Background:
- Vasomotion (vascular oscillations ~0.1 Hz) is a potential biomarker for neurodegenerative diseases.
- Its origins, spatiotemporal patterns, and link to neural activity are not well understood.
Purpose of the Study:
- To investigate the spatiotemporal characteristics of cerebral vasomotion.
- To determine the relationship between vasomotion and neural activity.
- To explore the impact of altered blood pressure on vasomotion.
Main Methods:
- Simultaneous recordings of neuronal activity and hemodynamics in rat motor and whisker cortices.
- Measurement of tissue oxygen levels.
- Pharmacological modulation of blood pressure to influence vascular oscillations.
Main Results:
- Vasomotion is driven by the arterial tree, not neurovascular coupling.
- Identified fast (hemispheric) and slow (traveling wave) vasomotion patterns.
- Vasomotion correlated with reduced tissue oxygen levels.
Conclusions:
- Cerebral vasomotion originates in the arterial tree and has distinct spatial patterns.
- Vasomotion is associated with hypoxia and is largely independent of spontaneous neural activity.
- Findings suggest vasomotion is not a direct product of neurovascular coupling.
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