Chapter 4 Post to BB Sensation and Perception

Chapter 4 Post to BB Sensation and Perception - Sensation...

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Sensation and Perception
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Overview Review Perception Visual System Hearing Organizational processes in perception
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Sensation and Perception Perception Sensation
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Stimuli Distal External stimuli to which our sensory organs respond Proximal Internal representation – percept – of object
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Perception, Reality and Illusion Ambiguity Illusion Reality
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Physical Events … to Mental Events Transduction Environmental event… sensory receptor neurons physical energy to neural signal Neural signal to CNS
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Visual System The Eye Retina Rods and cones Biopoloar cells Ganglion cells Optic nerve Occipital lobe
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Visual System Color perception Wavelength Hue, saturation, and brightness
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Visual System All wavelengths = white light Mixed complementary light wavelengths (ex: green and red light) Note that this is different from pigments + = + =
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Visual System Color blindness Inability to distinguish colors (red-green; yellow-blue) Red- green Blue- yellow Normal Vision
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Chapter 4 Post to BB Sensation and Perception - Sensation...

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