Re: Questions about a distribution

David Winsemius <doe_snot@xxxxxxxxxxx> wrote in
news:Xns9A14DF06F1FA3dwtttttt@xxxxxxxxxxxxxx:

It is not necessarily the case that a "flash" signal would need to reach
the visual cortex for processing to occur. I realize that that is the
typical pathway taught in Neuroanatomy 101, but would not exclude the
possibility that some sort of non-specific pathway may bypass the
occipital cortex.

But it absolutely must reach lateral geniculate nucleus. If colliculus is
involved after that, that's still a fairly distributed response.

If you want to think about a minimum reaction time, think about saccade
reaction times, which are probably the shortest vision-mediated responses
in the body. Under certain conditions, the latency can get as low as 60ms,
but this is difficult. To map that to syapses, you're probably in the 10-
20 range, with two of them on the ocular motor side.

There's no way around vision being slow. We have some reflexes that
stabilize vision during head motion that use no visual information, which
evolved just because vision is too slow to include in a feedback loop.

--
Scott
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