COGS 001 Lecture Notes - Lecture 1: Photon, Metastability, Retina
11 Sep 2018
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Focus on transduction, connection between behavior and biology. We can think of light as something that travels around and hits the eye, in which each photon is associated with a specific wavelength. Any given light that comes into our eyes is characterized as spectrum. Trichromacy or trichromatism is the possessing of three independent channels for conveying color information, derived from the three different types of cone cells in the eye. For humans with normal color vision, any test light can be matched by a mixture of three primaries. * if o(cid:374)ly t(cid:449)o pri(cid:373)aries are a(cid:448)aila(cid:271)le, so(cid:373)e lights (cid:272)a(cid:374) t (cid:271)e (cid:373)at(cid:272)hed. If four pri(cid:373)aries are available, matches will not be unique. A volunteer is given three knobs (red, green, and blue) and are told to adjust both sides of the circle for them to be the same color. The experiment takes as input a spectrum and returns as output the intensities needed on each of the primaries.
