PSYC 2390 Chapter 3: Chapter 3 Textbook Notes

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Lana Trick

Document Summary

Lateral inhibition: inhibition that is transmitted across the retina: limulus, or the horseshoe crab, can help understand how lateral inhibition can cause perceptual effects. Use the limulus because the structure of the eye makes it possible to stimulate individual receptors: it"s made up of hundreds of tiny structures called ommatidia, ommatidia have a small lens directly over each receptor. This perception can be explained by lateral inhibition. Then, determine inhibition using other receptors: subtract their inhibition from a"s initial unit number (100) The size of the bipolar cell response depends on how much stimulation it receives from its receptor and on the amount that this response is decreased by the lateral inhibition it receives from neighbouring cells. If we were to calculate "d" we need to recognize neighbouring cells "f" and "h" are illuminated because they fall under black squares. These bands are an illusion because they occur even though corresponding intensity changes do not exist.