Key result
Gravity-induced postural changes suggest the external carotid artery serves as an overflow pathway to prevent cerebral hyperperfusion during increases in cerebral arterial blood pressure.
Why the study?
It was unknown whether gravity-induced changes in intracranial pressure influence cerebral blood flow regulation in young men.
Do gravity-induced changes in intracranial pressure influence cerebral blood flow regulation in young men?
Do gravity-induced changes in intracranial pressure influence cerebral blood flow regulation in young men?
The external carotid artery may act as a protective overflow pathway against cerebral hyperperfusion during postural changes.
Answers are grounded in this paper and cite their sources.
External carotid artery may act as overflow pathway during posture changes; leaves open generalizability beyond young men and clinical relevance.
We investigated whether gravity-induced changes in intracranial pressure influence cerebral blood flow regulation in young men. We recorded extra- and intracerebral blood flow during changes in posture, and data indicate that the external carotid artery may serve as an overflow pathway to prevent cerebral hyperperfusion during increases in cerebral arterial blood pressure.
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Ogoh et al. (2020) studied this question. Gravity-induced postural changes suggest the external carotid artery serves as an overflow pathway to prevent cerebral hyperperfusion during increases in cerebral arterial blood pressure.
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