PSYC 2220 Lecture Notes - Magnocellular Cell, Motor System, Comparator

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Detecting motion: why do we process vision, how good is the human visual system at detecting motion, velocity, distance, luminance. If something moves very slowly it is usually not perceptible (water slowly falling down a glass) It"s the same if something moves too fast. If something moves too fast, there will not be a percept of motion (jumping) On a plain background you can notice motion easier than a busy distracting background: duration, relative versus absolute motion. About more than 5 changes per minute. The more stuff you have in a scene, the easier it is to determine movement relative to each object. Colour is processed by the retina, goes through the lgn, primary cortex, and then the. The dorsal pathway is the parallel pathway and is the where cortex. There is evidence for motion activity in both pathways. V1 (there are motion sensitive cells in columns, just like colour).