PSYC 2390 Study Guide - Midterm Guide: Afterimage, Lateral Inhibition, White Side
1 Mar 2019
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Why does this particular after-image occur: neurons, when something is on white, it means the cells looking at it will produce a lot of ap and the collector cells are getting that ap. Two ways that collector cells summarize information: rods and cones, many rods are connected to the ganglion cells, summation, a. convergence and spatial (lateral) summation, 1. Effects of summation (review: adding up the activity in many neurons, b. lateral inhibition, 1. Effects of lateral inhibition: occurs when you have side by side cells that are receiving different messages, sometimes you have side by side neurons that send inhibitory neurotransmitters to this neighbour, summarize information, the cells inhibit each other. On response/off response: receptive field, area on the retina, on (+): number of action potentials increases, off (-): number of action potentials decreases, b. Receptive fields in the retinal ganglia: 1. Neural coding: from the eye to the brain: important background concepts, a.
