Thursday, June 10, 2004

Nice save!

And the crowd goes wild... with one lone exception who simply wears a perplexing smile. What a weird place for a gravity experience. I mean, all I did was stand there and continue to hold on to the handrail. Talk about being in the wrong reality at the right time.

Ok, so that's my random bit of random for today.

Did you know that there are two nerve pathways from each eye to the brain? The main pathway (commonly called the optic nerve) goes directly to the visual cortex and deals with color, shape, recognition, etc. The second pathway goes to the brain stem, then continues to a place just above the visual cortex. It deals mainly with contrast and movement and is used mostly for reflexes and such. It is more developed in animals than in us humans. Interestingly enough, people who have had their primary nerve pathway damaged can be 100% blind, but can still use this secondary pathway to sense movement. This strange condition is known as blindsight. The person can see, even though they cannot see. What fun stuff you learn on NOVA.

And even weirder than that, when people have the connection between the emotion center and the visual centers of the brain damaged they develop a strange dilusional condition where they believe that people and places they are familiar with are not the real thing, but imposters. A man with this condition thought that his parents were people that looked exactly like his parents, that his dog was not his dog, but rather another dog that looked exactly the same, and even that his appartment was not his own. And even trippier - when he looked in the mirror, he believed that he was not himself, but a look-alike. When this happened he would refer to himself in third-person. The condition corrects itself over time, which is nice for those who suffer from it (it is usually the result of a head injury).

I'll be adding people to the jinglyblog today. Enjoy.