Re: Eye Input Signal Testbed

From: Coreleus Corneleus (coreleus3_at_yahoo.com)
Date: 06/13/04 

Date: 13 Jun 2004 08:37:09 -0700

eagleson2004123@yahoo.com wrote in message news:<43d9f575.0406120922.3da5ea08@posting.google.com>...

> Eye Input Signal Testbed

Sounds like a _moderate_ idea for those who are blind. However, there
is potential infection, clotting, or unknown factors involving long
term neural degeneration at the locations of electrical stimulation.
A large number of tiny strokes in the occipital lobe is bad news. And
even people who were blind from birth still probably use much of the
occipital lobe for dimensional information involving inputs from the
postcentral gyrus at the dorsal and ventral boundaries of the nervous
system on the cerebrum (body sensory inputs) and from the temporal
lobes (hearing) [maps from walk distances, feeling of objects, and
spoken references to locations] simply because it is not being used
from much of anything else because there are then no sight inputs
going into portion of the brain as there would be regularly, due to
the blindness.

Also, the nerve mesh in the retina itself, does some processing of
contrast and direction, and movement before the firing output is even
sent to the brain.

It is far less extensive than what you see when you have to coordinate
the input from a vast number of individual sensory fibers when you
have, say, the coordination of each tiny section of a compound eye, as
is in insects. But there is still some processing that does go on in
the retina itself. Not to mention the mid-brain crossover where the
inputs from both of your eyes are blended together. [If you can not
see out of the left or right side of BOTH of your eyes rather than
one, you might almost infer that you have had a mid-brain or occipital
lobe stroke, and there may be nothing wrong with your eyes.]

Unless you are already blind, don't mess with a good thing. Just get
better vision goggles or upgrade your monitor.

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