Re: Questions about a distribution

Scott Seidman <namdiesttocs@xxxxxxxxxxxxxx> wrote in
news:Xns9A17581518CB8scottseidmanmindspri@xxxxxxxxxxx:

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.

Agreed.

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.

Thanks for the more informed commentary than I would have been able to
offer. We flimsy humans are going to be way behind the silicon-based life
forms if they ever get to the intelligence lift-off point.

--
David Winsemius
.

Relevant Pages

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