What is it in the human eye that makes us see or not see color?

Answer 1

rods can see black and white
cones can see color
rods open up their sodium channels which create a synapse which release glutamate which changes the behavior of the rods

Answer 2

There are rods and cones in the back of the retina of your eye. These cells pick up light.

Cones pick up the color spectrum and rods pick up light and dark.

When it gets dark, we tend to see things in black and white or with a bluish tinge because the cones cannot pick up light as well as the rods which see no color.

Some animals specialize in seeing in the dark and have more rods than cones. Their rods are highly concentrated in the back of the retina so they pick up more light during the night.

Some animals have more cones than rods in the back of the retina and pick up on the full spectrum of color. Most species of Octopus see like human eyes under the sea because they have adapted to communicate with their rapid change in the color of their skin.

So, it's all about the rods and cones that have formed on the back of the human retina due to evolutionary changes in order for us to survive during the day light and identify subtle differences in color so that we can plan for impending seasons, identify ripe fruit which is at it's most nutritious state, the color red to protect us from poisonous insects and or rival or friendly tribes at a distance.

That's it.

Answer 3

Actually, the brain flips the image. You can give people glasses that flip the image and within a few hours, they see normally becuase the brain adjusts.

Answer 4

its called the rods i think plus evrthing we see is upside down in reality but the rods and cones flip the image the way we see

Answer 5

Rods and cones

Answer 6

Foote Cone and Belding.

http://en.wikipedia.org/wiki/Foote,_Cone_&_Belding

Answer 7

cones on the retna... rods deal with diming the light

Answer 8

cone cells