PSYB51H3 Chapter Notes - Chapter 5: Lateral Geniculate Nucleus, Subtractive Color, Visual Cortex
15 Apr 2015
School
Department
Course
Professor
Document Summary
Color is not a physical property of things, it is related to a physical property. Range of electromagnetic spectrum between wavelengths of about 400-700 nanometers (nm) Most of the light that we see is reflected light. Some wavelength is absorbed by surfaces they hit, the + light is absorbed, the darker it appears. Color of a surface depends on the mix of wavelengths that reach the eye from the surface. 3 types of cone photoreceptors that differ in photopigment they carry, as a result they differ in their sensitivity to light of different wavelengths. S cone: cone that is preferentially sensitive to short wavelengths; blue cone, peak 420 nm. M cone: cone that is preferentially sensitive to middle wavelengths; green cone, peak. L cone: cone that is preferentially sensitive to long wavelengths; red cone, peak 565 nm. M and l cone sensitivity overlap, m cone can detect l cone wavelength.
