PSYC 3312 Lecture Notes - Lecture 2: Retinitis Pigmentosa, Macular Degeneration, Spectral Sensitivity

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26 Oct 2016
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Psych 3312 unit 2 notes (exam on 9/20) Day 1 vision notes (get from natasha or melissa): Brightness: what makes the blind spot a blind spot in your visual field. Retinal cell layers: cell type, rods/cones, bipolar/ganglion, horizontal, amacrine. Transduction signaling lateral inhibition movement: we have more rods than codes, physical property of a wave that gives us color how far the peaks are. And how bright something is: cones (6m, chromatic (color vision, non-saturable, less convergence, fovea (contains only cones) Focusing light: cornea 80, lens 20% Can bend and move and respond to incoming information. Eyeball too long: hyperopia (far sighted) Eyeball is too short: pres(cid:271)yopia: (cid:862)old eye(cid:863) Trouble seeing close up (newspapers, books, etc. ) Opsin and 11 cis-retnal (type of molecule responsible for absorbing different wavelengths of lights) Photore(cid:272)eptor tra(cid:374)sdu(cid:272)tio(cid:374) photoiso(cid:373)erizatio(cid:374) of rhodopsi(cid:374) (cid:862)seei(cid:374)g the light(cid:863: when you have light come into cell causes isomerization (molecules reconfigure) in the 11 cis-retnal. End up with an increase in pde.

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