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First images of cerebrospinal fluid in the brain during sleep (2019)

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Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#31
post #19

What is the ideal sleeping position to maximize brain wash? Is it back, side, slightly inclined? Fluids theory would surely dictate how we can better align our body to encourage this. Intuition says our neck torsion must be instrumental to a good flow.

You don't know what effect this has. Why do you want to maximise it?

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#32
post #19

What is the ideal sleeping position to maximize brain wash? Is it back, side, slightly inclined? Fluids theory would surely dictate how we can better align our body to encourage this. Intuition says our neck torsion must be instrumental to a good flow.

If I'm lucky, constant tossing and turning.

A few years ago, before Covid era (BC :), I did a tour of medieval castles in Europe and one observation that stuck in my memory was that the beds used by the royalty were constructed with an inclined position. I’m really curious how prevalent this was and if it was the preferred luxury style of the rich. In parts of Asia hard pillows (reeds/woven) were preferred over down.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#33
post #24

Earlier quoted context omitted.

I used to get a funny look when instead of a choice of music I opted for silence in the headphones during an MRI. Then I think I started to say it dismissively enough with conviction and got nonreactions.

I never understood opting for music. MRIs are so loud; the last thing I want on top of it is competing noise. How is that not sheer cacophony?

I find loud screamo music the most soothing and compliments background machinery well.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#34

This is curious. During my research into neutral networks we depended on a neuroscience result that found waves of trophic factor (i.e. the stuff used to build up neurons [i.e. learn]) travel in cascading waves from the core of the brain to the periphery. By adding a sense of location and a learning term contingent on the factor we saw learning (xor) prohibited by Minsky's result (not really prohibited because we cha…

Was this research conducted prior to 2005? I find the whole xor result to be pretty irrelevant, which I think is representative of the field writ large. > Is anyone aware of modern work expanding on that front? I am curious about this as well, as well as the general state of biological inspiration in the field. My impression was that biological analogy had largely been pretty much completely moved away from, except a…

Yes, 2004 but now I'm curious why you ask. ?

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#35

This is curious. During my research into neutral networks we depended on a neuroscience result that found waves of trophic factor (i.e. the stuff used to build up neurons [i.e. learn]) travel in cascading waves from the core of the brain to the periphery. By adding a sense of location and a learning term contingent on the factor we saw learning (xor) prohibited by Minsky's result (not really prohibited because we cha…

My own evolving hypothesis is that pressure(s) in the body is a very important "setting," as well as the effects of natural Faraday cages that occur throughout the body/brain and at different layers.

To note, I'm really curious how a no-to-low inflammatory vs. high inflammatory diet would impact this visual; likewise seeing differences between short-term and long-term, and things like before and after if switching between/cleaning up a diet or going from low inflammation to high inflammation over 1-5-10 years.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#36
post #31
post #19

What is the ideal sleeping position to maximize brain wash? Is it back, side, slightly inclined? Fluids theory would surely dictate how we can better align our body to encourage this. Intuition says our neck torsion must be instrumental to a good flow.

You don't know what effect this has. Why do you want to maximise it?

Only if they didn't read the article, which explains "Earlier studies have suggested that CSF flow and slow wave activity both help flush toxic, memory-impairing proteins from the brain." and more.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#37
post #10

Earlier quoted context omitted.

I get an MRI once a year and I frequently fall asleep because nothing puts me to sleep like mechanical white noise. It's kind of a problem because I try to move or jerk awake, which ruins the MRI. My MRIs take forever. I feel terrible for the attendants.

How is your aircraft sleeping?

Amazing provided people shut up. I'm also 5'3" so I'm comfortable in airline seats.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#38
post #3

Very cool. My daughter has a brain shunt due to complications of spina bifida and so we’re thinking of cerebrospinal fluid on a regular basis. As a layman I guess there’s a particular cerebrospinal fluid pressure you want, and that being too high or too low causes issues? Apparently the shunt just drains into her belly so I also found that interesting. Too high and she’ll have terrible headaches and an “alien” head (…

what exactly do you mean by alien head? not offended, just curious

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#39

This is curious. During my research into neutral networks we depended on a neuroscience result that found waves of trophic factor (i.e. the stuff used to build up neurons [i.e. learn]) travel in cascading waves from the core of the brain to the periphery. By adding a sense of location and a learning term contingent on the factor we saw learning (xor) prohibited by Minsky's result (not really prohibited because we cha…

Was this research conducted prior to 2005? I find the whole xor result to be pretty irrelevant, which I think is representative of the field writ large. > Is anyone aware of modern work expanding on that front? I am curious about this as well, as well as the general state of biological inspiration in the field. My impression was that biological analogy had largely been pretty much completely moved away from, except a…

Itwas moved away from, but in recent years it's been picked up again, with growing intensity. Just look at deepmind for example, which has been publishing with neuroscientist wet labs. Two papers come to mind - one showing the "prefrontal cortex as meta reinforcement learning", and another about distributional temporal difference learning wherein specific neurons were examined.

Re: First images of cerebrospinal fluid in the brain during sleep (2019)

#40
post #38
post #3

Very cool. My daughter has a brain shunt due to complications of spina bifida and so we’re thinking of cerebrospinal fluid on a regular basis. As a layman I guess there’s a particular cerebrospinal fluid pressure you want, and that being too high or too low causes issues? Apparently the shunt just drains into her belly so I also found that interesting. Too high and she’ll have terrible headaches and an “alien” head (…

what exactly do you mean by alien head? not offended, just curious

a physically large head, shaped similarly to a stereotypical alien head
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