PSY 1101 Lecture Notes - Lecture 10: Color Theory, Color Blindness, Retina

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

If a stimulus intensity remains constant, our sensory receptors adapt to it. We therefore no longer experience the sensation. Electromagnetic signal whose wavelength varies from 400-700 nanometers (light) Retina: cones and rods, fovea, blind spot. If the reaction is strong enough, the bipolar cells will be activated. Rods and cones have chemical reaction to light. The axons of the ganglion cells converge at the blind spot to form the optic nerve. Cones- packed in the centre of the retina, near the fovea (where vision is most acute. Colour vision: 3 types of cones- for red, green and blue. A single cone may project to a single bipolar cell. Output of the cone will have to be very high to activate the bipolar cell. The output is dependent on the intensity of the light. Need a great deal of light to see in colour. There are many more rods than cones but the rods are spaces relatively far apart.