how the brain cleans itself during deep sleep

From the «also: dreams of being unprepared for the exam» department:
Title: How the brain cleans itself during deep sleep
Author:
Date: Fri, 10 Jan 2025 00:00:00 +0000
Link: https://www.nature.com/articles/d41586-025-00007-4

Nature, Published online: 10 January 2025; doi:10.1038/d41586-025-00007-4[1]
Blood vessels in the brain rhythmically constrict and dilate to drive waves of
cleansing fluid through the organ.

Links:
[1]: https://www.nature.com/articles/d41586-025-00007-4 (link)