Textbook Notes (367,754)
Canada (161,370)
Psychology (3,330)
PSYC 2390 (118)
Lana Trick (87)
Chapter 3

Chapter 3 Textbook Notes

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PSYC 2390
Lana Trick

Chapter 3 6169Lateral inhibition Inhibition that is transmitted across the retinaLimulus or the horseshoe crab can help understand how lateral inhibition can cause perceptual effectsUse the limulus because the structure of the eye makes it possible to stimulate individual receptorsIts made up of hundreds of tiny structures called ommatidiaOmmatidia have a small lens directly over each receptor Three perceptual phenomena that have been explained by LI Each involves the perception of lightness the perception of shades ranging from white to gray to black 1Hermann Grid See figure 333 on pg 63 A geometrical display that results in the illusion of dark areas at the intersection of two white corridors This perception can be explained by lateral inhibition Receptors send signals to bipolar cells and these bipolar cell send lateral inhibitionWhat is the output of a bipolar cell that receives signals from AIf the light falling on A generates 100 units in its bipolar cell no inhibition would be presentThen determine inhibition using other receptorsSubtract their inhibition from As initial unit number 100The size of the bipolar cell response depends on how much stimulation it receives from its receptor and on the amount that this respo
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