sep 17 - Ch.3 Sensation and Perception (read 94-100) I....

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Ch.3 Sensation and Perception (read 94-100) I. Sensation and Perception A. sensation: stimulation of sense organs B. perception: process of organizing and interpreting sensory information II. Sensation A. Absolute threshold: lowest intensity at which participant notices stimuli 50% of time B. difference threshold: (aka the just noticeable difference) smallest difference between two stimuli that is needed for a person to notice 50% of the time C. selective attention: art of focusing on a specific stimulus while ignoring others i. inattentional blindness: failure to notice unexpected events when working on a task D. sensory adaptation: change in the responsiveness of the sensory system based on the average level of surrounding sensation E. Vision i. stimulus=light waves ii. sense organ=the eye iii. pupil: adjustable opening in center of eye a) open/closes to change amount of light entering eye iv. cornea:protective covering that covers eye v. iris: ring of muscle around pupil that forms colored part of eye & controls size of pupil opening vi. lens: transparent structure behind pupil that changes shape to focus light on back of eye a) accommodation: when lens adjusts to focus image b) image is inverted by lens, so it is mirror image when projected on back of eye vii.nearsightedness (myopia) a) faraway objects are blurry b) eye is too long viii.farsightedness (hyperopia): a) nearly objects are blurry b) eye is too short of lens does not thicken enough
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This note was uploaded on 11/15/2010 for the course PSYCH 36-087 taught by Professor Welsh during the Fall '10 term at UGA.

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sep 17 - Ch.3 Sensation and Perception (read 94-100) I....

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