Comment on Does the ping between your eyes and brain increase when you're tired?

• Lightfire228@pawb.social ⁨1⁩ ⁨day⁩ ago

  I would expect that brain processing takes orders of magnitude longer than signal propagation

  So, while you’re probably correct, I’d wager that the brain processing delay drowns out any variances in signal propagation speeda

  (I are computer science, not neuroscience)

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  • marcos@lemmy.world ⁨1⁩ ⁨day⁩ ago

    I’m not a neurologist either, so take this with a huge grain of salt, but it seems that I’ve gone a bit deeper on the rabbit hole.

    AFAIK, “brain processing” seems to be mostly signal propagation. Our brains don’t work anything like the neural networks we use, but it seems to work like some kind of neural network, and “processing” being made by moving signals from one place to another is part of it.

    The one effect of sleep that I know of is exactly the kind of “environmental cleanup” necessary to make the electrical signals move faster. Now, there are certainly lots of other effects I don’t know of, and for all I know the speed could actually be bounded and all that sleep does is to keep it at the boundary. Also, “tired” is a very ambiguous word here. But still, I’d expect it to be important.

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    • Lightfire228@pawb.social ⁨1⁩ ⁨day⁩ ago

      I think i chose my terms poorly

      In this case, what i meant by “Signal propagation” was purely the time delay from retinal stimulation, to optic nerve, to brain

      And by “brain processing”, i meant “the time it takes from brain receives visual data to you experiencing it”

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• SincerityIsCool@lemmy.ca ⁨1⁩ ⁨day⁩ ago

  Brains are weird so that checks out

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