15_Motion_Sound_Loudness_Pitch

15_Motion_Sound_Loudness_Pitch - S e n s a t io n a n d P e...

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Sensation and Perception Outside the Classroom (June 23rd, 2010) You will briefly present the description of a phenomenon, experienced outside the classroom, not described in class or the textbook, of which you have been able to reach a better understanding based on what you learned in this course. If you like, you can bring handouts for the class or send me 1 slide (saved as a pdf) the night before the presentation. The setting for these presentations will be informal. Allotted time: 2 minutes max Goal: Briefly describe the phenomenon experienced and explain it based on what you have learned in this class. For the explanation, use specific and technical terms. Example: I noticed that the sun and the moon seem to cover each other almost perfectly during an eclipse. Based on what we learned in class, I think this must be because they have the same retinal size. This would be consistent with the sun being much larger in physical size, but further away, and the moon being much smaller in physical size, but closer, such that their size in degrees of visual angle is actually the same… Do not google it, experience it! It’s everywhere: at home, at a concert, on the subway, while waiting in line at the supermarket, while brushing your teeth or singing in the shower, at a museum, while picking cherries, while watching a movie, while observing your niece play, while hiking in the mountains…
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Perception - Chapters 8,11 Goals for today 1.Perceiving Motion Transition from visual perception to auditory perception 1.Physics of sound 2.Perceiving pitch and loudness
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Perceiving Motion
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Corollary Discharge Theory Why does the world not appear to move whenever we move our eyes, given that eye movements cause images to move across our retinae? Why do you perceive a moving object that you are tracking with your eyes as moving even though it does not move across your retina?
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Corollary Discharge Theory 1. Hold eyes still while object moves 2. Move your eyes to follow moving object 3. Move your eyes while objects are still Eye Retinal Image moves does not move moves moves does not move moves
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Corollary Discharge Theory Motion perception depends on three types of signals: 1. Motor signal sent to eye muscles when observers moves or tries to move eyes 2. Corollary discharge signal to indicate that of motor signal was sent 3. Image movement signal (= image displacement signal) when image stimulates
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15_Motion_Sound_Loudness_Pitch - S e n s a t io n a n d P e...

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