Concept
Version 10
Created by Boundless
Transduction of Light
Hyperpolarized visual receptors
When light strikes rhodopsin, the G-protein transducin is activated, which in turn activates phosphodiesterase. Phosphodiesterase converts cGMP to GMP, thereby closing sodium channels. As a result, the membrane becomes hyperpolarized. The hyperpolarized membrane does not release glutamate to the bipolar cell.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Vision. October 17, 2013."
http://cnx.org/content/m44761/latest/Figure_36_05_05.jpg
OpenStax CNX
CC BY 3.0.