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Psychology 1010

by: Sydney Hendertilo

Psychology 1010 PSYC 1010

Sydney Hendertilo

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About this Document

Lecture 8 notes
Introductory Psychology
Dr. Fischer
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Sydney Hendertilo on Wednesday October 5, 2016. The Class Notes belongs to PSYC 1010 at Wayne State University taught by Dr. Fischer in Fall 2016. Since its upload, it has received 33 views.


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Date Created: 10/05/16
Psychology 1010 Lecture 8 Notes   Blind Spot o Blind spot demonstration  Circle disappears; line is completed when in blind spot o Perception is a construction of the brain  Reception o Photoreceptors: rods and  cones  Cones allow us to see color, without them we wouldn’t see color.  Only cones (no other cells) in fovea  Receptive fields  o An area that when presented with an adequate stimulus, causes a cell to respond. o Receptive field for any cell=sum of inputs  Receptive fields – rods vs. cones o Rods: many rods converge onto bipolar cells o Cones: one cone per bipolar cell  Resolution Summary o Fovea  Exclusively cones  Input to RGC can be 1 cone to 1 RGC; smallest receptive field possible  Also site of most color detection o Outside Fovea  Primary rods  Input to RGC can be 1000 or more rods to RGC  Poor color sensitivity   What we see o An objects color=the wavelength(s) of light that reflects off of it (color is  constructed by our brain, and does not exist outside of it) o Any color can be created by mixing 3 lights in various proportions this is the C o Detectors: red, green and blue  Color Blindness o Red/Green blindness most common   Problem is distinguishing between them, they look the same  The brain creates perceptions o “normal” human color perception requires  Three brain detectors  A brain capable of using that information  The brain is a computer o What kind of computer  Serial: one step (calculations) at a time  Speed is based on faster processors  Parallel: multitasking o More than one calculation at once o “multiple core”  Receptive fields in visual cortex (VI) o In a primary visual cortex, receptive fields are shaped like lines in a particular  orientation  Serial processing o Adding information and building complexity as information “moves down the  assembly line.”


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