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From: JAB <here@is.invalid>
Newsgroups: sci.misc
Subject: Re: how the brain cleans itself during deep sleep
Date: Thu, 16 Jan 2025 07:19:46 -0600
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On 11 Jan 2025 02:35:25 GMT, Retrograde <fungus@amongus.com.invalid>
wrote:

>Blood vessels in the brain rhythmically constrict and dilate to drive waves of
>cleansing fluid through the organ.

Misleading statement above - Blood flowing through vessels can cause
brain vessels to rhythmically dilate and constrict.  Diastolic and
systolic pressure changes cause this effect.

>waves of cleansing fluid 

I'd have to read that article, but where is this fluid "manufactured?"

>How the brain cleans itself during deep sleep

Blood vessels throughout the body can do this, rhythmically dilate and
constrict, while sleeping.  Again, I'd have to read the article, but
these researchers seem to be misrepresenting body wide events.


Link: https://www.nature.com/articles/d41586-025-00007-4