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I read in a general overview of the left and right complex in our brain, that hearing takes in the world from a left-right stand point. Take a loud sound coming from our right. Both ears can hear the sound. The right ear sends signals to the left brain hemisphere while the left ear sends signals to the right hemisphere. The brain then compares the amplitude and time of arrival of the sound from each ear. The brain formulates a proportion between the two sides. The side receiving the sound with the high amplitude and faster arrival time is where the sound is coming from.

I thought the auditory proportion deduced in the brain was similar to the eye’s three photo-pigment proportions. Based on the ratio of activity between two receptors, a person perceives a specific color. I think it’s interesting how a lot of our perceiving is based on a simple ratio formed in the brain.

I’m curious why people seem to disagree on very mixed colors like teal, maroon, or periwinkle. These colors should fall on the same receptors and create the same ration. Still, some people say teal is a green color while others say it’s a blue color. Why is this?

http://hubel.med.harvard.edu/b15.htm