Lecture 4 - Jan 18th

Lecture 4 - Jan 18th - Perception Perceptionvs. Sensation...

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Perception Perception vs. Sensation Senses Percepts Touch Very cold Taste Ouch (pain stimulation) Smell Sight Hearing Kinesthetic Senses: physical stimulus that excites our receptive specialized cells Percepts: our precepts of the same temperature is different (some people think it was ridiculously cold, others don’t) Which is the most dominant sense? -Vision: McGurk effect -mouth movements influence what we’re hearing -even knowing about the effect, you cannot ignore it. the speech brain doesn’t care about whatever outside knowledge you bring into it What vision is (not) -what we see is not a “faithful” record - what’s in our eyes -our vision is not susceptible to illusions - by studying illusions we can see how our vision breaks down, and the point at which it breaks down -what we’re seeing is not what’s actually there Anatomy of the visual system -left and right visual field for both eyes -stuff in right visual field = left brain -Cortical and Subcortical visual systems -Topographical information in our brain -very little mass to it -Cortical magnification -Image is decomposed and composed back -switched to opposite side, reversed, etc -up, down, left, right reversed orientation in the visual cortex Vision is not the idea that the eye “sees”
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Lecture 4 - Jan 18th - Perception Perceptionvs. Sensation...

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