PSYCO275 Lecture Notes - Lecture 9: Visual Acuity, Receptive Field, Color Vision

• School: University of Alberta
• Department: Psychology
• Course: PSYCO275
• Professor: Clayton Dickson

Document Summary

Specific part of the world a sensory receptor responds to. Info can be modified at various stages in relay. Retina: light sensitive surface at the back of the eye. Translate light into aps, discriminate wavelengths to distinguish colors. Vision is better in the center of the visual field than at the periphery. Myopia (nearsightedness): light falls short of the retina. Region of the retina where the optic nerve leaves the eye. Optic disk is in a different location in each eye (what solves the blindspot problem) Optic disk is left of fovea in the left eye, and right of the fovea in the right eye. Convert light energy to chemical energy to neural activity. Photoreceptors are connected to two layers of retinal neurons. P cells (parvocellular): receives input from cones (p-c) Just before entering the brain, the optic nerves partly cross, forming the optic chiasm. Medial path of each retina (nasal retina) crosses to the opposite side.