SOMEONE ASKED 👇
The rods and cones in the eye transmit light and __________.?
HERE THE ANSWERS 👇
-
Color. This is very interesting, I think. In humans and some other animals, including birds, we have rod cells which help us with light contrast and with our night vision, and cone cells which can distinguish the different wavelengths of color and transmit that to the brain, and that is decoded as the colors we see. If a person is color blind (usually not completely; most color blind people have difficulty with reds and greens), the cone cells do not transmit the wavelengths correctly and so the person sees something different than most of us.
My son has this situation, and he has trouble with greens/reds. When he was small, he’d bring home drawings of people with orange hair, because he sees at as brown. Women, who have two genes for color vision, are generally better than men at distinguishing black and navy blue. Men only have one allele for color vision, on the X chromosome.
Source(s): masters degree, human physiology; retired AP bio and physiology teacher -
Images
-
Rods are more sensitive and more abundant than cones. Thus they are best for see’ing in dim conditions like at night. Cones are less sensitive but can detect colors so are better for seeing in lighted conditions. When it is dark out, color doesn’t disappear. There is simply not enough light reflecting off objects for you to see colors clearly. That is “dark vision” The light ultimately lands on the retina where a neurologic series of polarizations occur in response to the quality of light. That is eventually sent through the optic nerve to your brain. Teh rods and cones are on the retina.
Leave a Reply