Color Mixing Demo...

R    G    B  
http://phet.colorado.edu/en/simulation/color-vision

See what colors we see as R G and B hit our cones.

Sensation... The Ear Pages on NobelPrize.org

The organization that gives out the Nobel Prize has a great website about the ear and how it works.

If you're having trouble understanding the accessory structures and the cochlea this site is for you.