13-06-2006, 18:14
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Registered User
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Team Role: Alumni
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Join Date: Jan 2004
Rookie Year: 2003
Location: New York
Posts: 2,000
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Re: Does your brain work?
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Originally Posted by BuddyB309
It has to do with whats called and after image. The cones in your eye that signal to the brain color only have an on or off switch. There are Red/green cones Blue/yellow cones, and some other color cones. The cones have to recharge after firing. So in the absent of a signal the brain thinks the cone is seeing the opposite color. If we follow the dots with our eyes we are using different cones all the time and our brain isn't fooled. But if we concentrate on the + our eyes are fixed and we are using the same cones all the time. So when the cone fires its signal that there is pink there it has to wait to fire again and when the dot disappears we see green.
Its the same thing as a camera flash in the dark. After your blinded you see that annoying green, pink, and white dot in front of your vision.
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He got it right. I learnt that in Psych.
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Whatever you do, you need courage. Whatever course you decide upon, there is always someone to tell you that you are wrong. There are always difficulties arising that tempt you to believe your critics are right. To map out a course of action and follow it to an end requires some of the same courage that a soldier needs. Peace has its victories, but it takes brave men and women to win them. - Ralph Waldo Emerson
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