Wissenschaftler entdecken verborgenen Puls im Gehirn, der vor Demenz warnen könnte | Die Ergebnisse liefern einen fehlenden Zusammenhang zwischen dem, was in der Bildgebung großer Gefäße zu sehen ist, und den mikrovaskulären Schäden, die beim Altern und bei der Alzheimer-Krankheit beobachtet werden
https://www.sciencealert.com/scientists-discover-hidden-pulse-in-the-brain-that-may-warn-of-dementia
1 Kommentar
From the article: The subtle pulses of tiny blood vessels in the brain can now be mapped in greater detail than ever before using a new imaging [method](https://www.nature.com/articles/s44161-025-00722-1).
It’s the first noninvasive tool to measure the expansion and contraction of microscopic arteries and capillaries in the living human brain.
Previous studies suggest that arterial pulses in the cerebrovascular system are predictive of dementia or cognitive decline. This technique could reveal whether that’s true or not.
Scientists can now identify dynamic changes across the entire cerebrovascular tree, from the largest branches to the tiniest twigs and offshoots at their ends.
„Arterial pulsation is like the brain’s natural pump, helping to move fluids and clear waste,“ explains neurologist and senior author Danny Wang from USC.
„Our new method allows us to see, for the first time in people, how the volumes of those tiny blood vessels change with aging and vascular risk factors. This opens new avenues for studying brain health, dementia, and small vessel disease.“