Cerebrospinal fluid flow is driven by arterial pulsations and respiration
Multiple physiological and neuroimaging studies confirm that cerebrospinal fluid flow is actively driven by cardiovascular and respiratory pulsations.
The retrieved literature consistently supports the claim that cerebrospinal fluid (CSF) flow and perivascular motion are driven by arterial (cardiac) pulsations and respiration. Numerous empirical studies using techniques like fast fMRI, MRI encephalography, phase-contrast MRI, and multiphysics modeling demonstrate that cardiovascular and respiratory cycles act as the primary mechanical drivers of CSF circulation and glymphatic transport.
Marcus A. Stoodley, Sally A. Brown, Christopher J. Brown, Nigel R. Jones. Arterial pulsation—dependent perivascular cerebrospinal fluid flow into the central canal in the sheep spinal cord. 1997. https://doi.org/10.3171/jns.1997.86.4.0686
Demonstrates that cerebrospinal fluid flow from perivascular spaces into the central canal is dependent on arterial pulsations.
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Elabasy A, Helakari H, Väyrynen T, Rajna Z, Huotari N, Raitamaa L, Isokoski V, Järvelä M, Kaakinen M, Piispala J, Kallio M, Korhonen V, Seppänen T, Kiviniemi V. Sleep Alters the Velocity of Physiological Brain Pulsations in Humans.. 2026. https://doi.org/10.1002/advs.202503745
Shows that cardiovascular and respiratory physiological pulsations act as key drivers of cerebrospinal fluid flow velocity in the brain.
Nair VV, Wright AM, Xu T, Foster E, Zhou X, Tong Y, Wen Q. Effect of brief rest on hemodynamics and CSF oscillations across age.. 2025. https://doi.org/10.1016/j.neuroimage.2025.121531
Identifies cardiac pulsation and respiration as primary drivers of neurofluid oscillations and cerebrospinal fluid dynamics.
Paasonen E, Stenroos P, Caulin Atienzar A, Utriainen J, Salo RA, Kettunen M, Ponticorvo S, Michaeli S, Mangia S, Paasonen J, Gröhn O. Mapping cardiac and respiratory pulsations simultaneously with functional connectivity in the rat brain using zero echo time fMRI.. 2026. https://doi.org/10.1177/0271678x261445230
Uses fast fMRI to capture cardiac- and respiration-related vascular pulsations contributing to brain fluid dynamics.
Quirk K, Ladrón-de-Guevara A, Raghunandan A, Mestre H, Nedergaard M, Kelley DH. Quantifying cerebrospinal fluid flow in pial perivascular spaces of rats.. 2026. https://doi.org/10.1186/s12987-026-00782-w
Confirms that in vivo cerebrospinal fluid pulsations are substantially synchronized with the heartbeat and tied to artery wall motion.
Zhu H, Liu P, Foster E, Jin N, Zhou X, Balédent O, Wen Q. Quantitative evaluation of low-frequency oscillations using real-time phase-contrast MRI during drowsiness.. 2025. https://doi.org/10.1186/s12987-025-00741-x
Measures flow rates demonstrating that cardiac pulsations dominate cerebrospinal fluid flow oscillations.
Li Z, Feng K, Gomez H. Mechanistic multiphysics modeling reveals how blood pulsation drives CSF flow, pressure, and brain deformation under physiological and injection conditions.. 2026. https://doi.org/10.1186/s12987-026-00804-7
Utilizes multiphysics modeling to show that blood pulsation directly drives cerebrospinal fluid flow and pressure.
Adam Wright, Yunjie Tong, Yu-Chien Wu, Qiuting Wen. Multimodal MR imaging approach to evaluate the interaction between cardiac pulsation and perivascular CSF motion. https://doi.org/10.58530/2023/1453
Finds that changes in cerebral blood volume driven by the cardiac cycle precede perivascular cerebrospinal fluid motion.
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