Psych P101 Sensation: Vision Notes Day 1
Psych P101 Sensation: Vision Notes Day 1 PSY P-101
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This 1 page Class Notes was uploaded by Meegan Voss on Monday February 22, 2016. The Class Notes belongs to PSY P-101 at Indiana University taught by Irene Vlachos-Weber in Summer 2015. Since its upload, it has received 185 views. For similar materials see Introductory Psychology in Psychlogy at Indiana University.
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Date Created: 02/22/16
Sensation: Vision II. Vision A. Stimulus (physical energy): electromagnetic energy (light waves) B. Image formed 1. Eye works camera a. Focuses on light reflected from objects = forms image of object on retina (back of the eye) b. Retinal image = inverted (upside down, gets turned right side up in the brain) 2. Parts of the eye a. Cornea: 1) Transparent front of eye (no blood vessels) light enters 2) Light wave (rays) are bent inward = starts forming image b. Iris: 1) Colored part of the eye (genetic) 2) Between the cornea and the lens 3) Unique to you c. Lens: 1) Completes focus of light on retina 2) Rods and the cones 3) Changes shape = focuses on objects at different distances (accommodation) a) Object near: gets thicker b) Object far: gets flatter Nearsightedness (myopia) – you can see near, hard to see far away (lens is too thick) Farsightedness (hyperopia) – you can see further away, but can’t see close up (lens is too thin) d. Pupil: diameter changes = let in different amounts of light (light to dark – dilate, pupil gets larger) (dark to light – constricts, pupil gets smaller)
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