PSYC 303 Lecture Notes - Lecture 6: Scotopic Vision, Color Vision, Electromagnetic Spectrum

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 303
• Professor: Thomas Spalek

Document Summary

He was able to also put a second prism and basically recombine those different colours into a white light: so the colours that we see are just these wavelengths of information impinging on our photoreceptors. There are some wavelengths that the rod system is not adapted to and thats specifically long wavelengths of light. People figured out that if you have the illumination in the red spectrum, you can get illumination that you can actually do tasks with but it does not at all effect the rod system. The blue cones pick up wavelengths all the way down from the very lowest levels (even below 400nm) to 530nm. The m cones pick up from 400-600nm and the l cones. 400-650nm so theres a range of lights that stimulate those photoreceptors. Need three cones for discrimination ability (b/w colours): hue: a colour wheel which depicts all these sort of colours. So the colour wheel represents the hue of the particular light.