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Chapter 4: Sensation and Perception. SUPA Psychology. Housekeeping. Today – Wrap up Chapter 4 Tomorrow: Chapter 4 Quiz Monday: Test 1 (Chapters 1-4) No notes N o books Multiple choice and short answer. Visual System: Perceptual Processes.
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Chapter 4: Sensation and Perception SUPA Psychology
Housekeeping • Today – Wrap up Chapter 4 • Tomorrow: Chapter 4 Quiz • Monday: Test 1 (Chapters 1-4) • No notes • No books • Multiple choice and short answer
Visual System: Perceptual Processes • http://www.youtube.com/watch?v=URLRdcnU6Hk&safety_mode=true&persist_safety_mode=1&safe=active
So what? • Our perception of the world is subjective • Perception can be influenced by expectations and attention • Perceptions are fallible!
Sensation and Perception: Hearing • http://www.youtube.com/watch?v=LV8_rOhAGxA&list=FLWFTHDtDJDzWUn19DC61Qgw&feature=mh_lolz • http://www.youtube.com/watch?v=YZH9EOWNeHs&list=FLWFTHDtDJDzWUn19DC61Qgw
Sensation and Perception: Hearing • Stimulus: Sound • Sound waves are vibrations of molecules that travel through the air • Amplitude • Wavelength • Purity • Humans hear only a portion of available sound range
The Human Ear • Ears channel energy through three sections: outer ear, middle ear, and inner ear • Outer Ear: Pinna • Middle Ear: Hammer, Anvil, Stirrup • Inner Ear: Cochlea, basilar membrane
Theories of Hearing • Place Theory • Perception of pitch corresponds to the vibration of different portions (places) along the basilar membrane • Frequency Theory • Perception of pitch corresponds to the rate or frequency at which the entire basilar membrane vibrates Both theories are valid! Turns out that both the location of the wave (or rather, where the wave peaks) and frequency of the incoming waves
Sensory Systems: Taste, Touch, and Smell • http://www.youtube.com/watch?v=ShUeUVOyK84&list=FLWFTHDtDJDzWUn19DC61Qgw
Other Sensory Systems • Gustatory System • Taste • Major players: tongue and taste buds • Olfactory System: • Smell • Major players: nose and olfactory cilia • Sense of Touch • Pressure and pain • Skin and various subcutaneous receptors