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total powerpoint test 2

total powerpoint test 2 - Systems Neuroscience Auditory...

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Systems Neuroscience Auditory, Visual, Somatic Sensory & Motor (Chemical Senses)
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Systems-level Neuroscience Sensory Chemical Senses Visual Auditory Somatic Sensory Motor
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Sensory System Themes Transduction Physical Energy -> Change in Vm Receptive Fields “Here is a cell, where must a stimulus be to change its membrane potential?” Sensory (& Motor) Maps “Receptors that are neighbors in the sensory surface have axons that are neighbors in the brain.”
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Receptive Fields
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Sensory Maps
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Auditory System
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Sound Pressure
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Atmospheric Pressure (think of air as a liquid) Air molecules are compressed and rarefied at the source Waves travel from source to ear drum Ear drum moves back and forth in synch No air = no sound waves
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Sound Pressure (with real values) 760 mmHg 760.00015 mmHg During Normal Conversation
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Decibel vs. Pressure 0.00000015 mmHg 0.15 mmHg
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Pinna -collects & amplifies -forward direction -provides multiple copies of sound
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