| Autor: |
Owen Bleddyn Woodward, Ian Driver, Emma Hart, Richard Wise |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Cerebral Circulation - Cognition and Behavior, Vol 6, Iss , Pp 100196- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2666-2450 |
| DOI: |
10.1016/j.cccb.2023.100196 |
| Popis: |
The selfish brain mechanism proposes that in some patients with impaired cerebral blood flow (CBF) or cerebrovascular function, hypertension may develop as a compensatory mechanism that aims to maintain CBF by increasing systemic blood pressure through an increase in cardiovascular sympathetic tone. The amplitude of low frequency fluctuations (ALFF) in the resting state blood oxygenation level dependent (BOLD) functional MRI signal has been previously posited as an index of cerebrovascular reactivity.We investigated whether regional fractional ALFF (fALFF) differs between 2054 hypertensives and 1724 normotensives using data from the UK Biobank dataset. Our primary hypothesis was that cerebrovascular function in the medulla and other regions involved in sympathetic regulation differs between hypertensives and normotensives, and that this is reflected by regional variations in fALFF.There is a significant regional variation in fALFF (F(14) =1126.17, p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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