Psychology 1000 Lecture Notes - Lecture 15: Rhodopsin, Psych, Ganglion

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Light ganglion bipolar cell receptor: receptors consists of rods and cones. Between the bipolar and receptor cells are the horizontal cells inhibiting systems modify signals. Between the ganglion and bipolar cells are the amacrine cells also inhibitory. Duplex theory: containing 127 million receptors and mostly are rods. How to demonstrate this: dark adaptation: flashgun gives you a big exposure to the light, and your sight will be blank for a while because your sight is now bleached. All of the chemicals are broken down for the light exposure: 120 million rods, 7 million cones. Rods: operate at low intensity sensitive for brightness, none in fovea centre of the eye, monochrome gives us black and white vision, and none in the fovea, but in other parts of the retina. Cones: operate at higher intensities insensitive for brightness, concentrated in the fovea centre has nothing but cones, full colour, visual pigments: very specific chemicals in the eye.