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Thread: how far can axons span within the brain?

  1. #1 how far can axons span within the brain? 
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    How far can neuronal axons reach within the brain? For example, have there been found single neurons that stretch from the occipital lobe all the way to the prefrontal cortex? Or maybe from the rightmost edge of the right temporal lobe to the leftmost edge of the left temporal lobe?

    I'm asking because I'm wonder if any arbitrary brain center can potentially stimulate (or inhibit) any other arbitrary brain center (by "arbitrary", I mean given that one doesn't know - not that everyone's brain is different).


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  3. #2  
    Forum Masters Degree SuperNatendo's Avatar
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    Wikipedia:

    The longest axons in the human body are those of the sciatic nerve, which run from the base of the spine to the big toe of each foot. These single-cell fibers of the sciatic nerve may extend a meter or even longer.

    I suppose from this article that axons in the brain are not as long as axons in the sciatic nerve.


    "It's no wonder that truth is stranger than fiction. Fiction has to make sense." - Mark Twain
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  4. #3  
    Time Lord
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    Moving a little closer... the largest neurons in the brain run from the extreme top down out into the spine - these dispatch voluntary motor signals once "signed & sealed" so to speak. Not the pan-cortex neurons you're looking for, I know...
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  5. #4  
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    Thanks for the replies.
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