U09 Psych 100 Chapter Notes - Chapter 5.2: Retinal Ganglion Cell, Ganglion Cell, Optical Illusion

• School: WUSTL
• Department: Psychology
• Course: U09 Psych 100
• Professor: Rice Heather, Duchek, Carpenter

Document Summary

Sensory receptors in the eye transmit visual info to the brain. Light first passes through the cornea, the eye"s thick transparent outer layer; the cornea then focuses the incoming light, which then enters the lens. The light is bent farther inward and focused to form an image on the retina, the thin inner surface of the back of the eyeball. The retina contains the sensory receptors that transduce light into neural signals. (retina is the only part of brain that you can see outside the skull; part of cns) More light is focused at the cornea than at the lens; lens is adjustable, whereas the cornea is not. The pupil, the dark circle at the center of the eye, is a small opening in the front of the lens; by contracting or dilating, the pupil determines how much light enters the eye.