PSY 1101 Lecture Notes - Lecture 1: Nociceptor, Visual Cortex, Endorphins

• 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. Electromagnetic signal whose wavelength varies from 400-700 nanometers (this is called. Fovea- focuses on a particular spot- cones will be densely packed. Many bipolar cells project to a single ganglion cell. Axons of ganglion cells form individual nerve fibers of optic nerve which projects into brain. Cones- packed in the center of the retina, near the fovea (where vision is most sharp and acute. Colour vision: three types of cones- red, green, and blue. Therefore colour vision is psychological (only 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 . Several rods project to a single bipolar cell.