Lecture 7 - Sept 23, 2010

Lecture 7 - Sept 23, 2010 - " September 23, 2010...

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Lecture 7 - principles that underly perception - ex. from domain of visual perception - can’t forget about hearing tasting smell touch and intuition?? - 5 senses with principles: input from environment that hinges on receptor receptor (whether taste buds or retina) which is transduced and turned into electrical signals in brain and therefore perception. - senses differ from one another - vision: process that must piece together elements of experience Auditory Perception - a dynamic and integrated process that combines information from sense organs with memories of past experiences, expectations of likely future actions, attention, motivation, and context - distinction between what you actually perceive and think you perceive - ex. illusion of triangles. no triangles but expectations of nature of world therefore perceive triangles Analogy from All Bregman: -he proposes: you are at a lake with lots of crazy things (monster, rowboat, submarine, etc). With your back to the lake you must make two channels out of the lake that will Fll with water and then put plastic ±oats in them. just by looking at the way the ±oats bump up and down in the water you must identify how many objects are in the water, what they are, what direction they are going, how fast are they going, etc - ripples in the water will create unique channels and if they are going different ways they will all ±oat differently etc - no one would be able to do this. -but this is exactly what your auditory system is doing -all the info you have about the sound of the world is coming to your brain from eardrums that are just membranes that wiggle in and out - the wiggling is the sole source of info for the auditory world - babies can distinguish from their mothers voice vs birds outside and simply from the wiggling of the ear drum. . it is fascinating and brilliant - your brain must put all of this together. .. - stimulus from environment hits sensory receptor (in all 5 cases) which sends electrical signal up nerve Fber which is sent to brain eventually - when the stimulus hits the receptor it is undifferentiated and there is nothing to separate
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Lecture 7 - Sept 23, 2010 - " September 23, 2010...

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