Sensation and Perception

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Presentation transcript:

Sensation and Perception The rest of the senses: Hearing, taste, touch, smell Sensation and Perception

Hearing Sound comes in waves, produced by vibration Sound=vibration Length of wave determines pitch (highness or lowness of sound) Height or amplitude determines loudness

Hearing Videos How We Hear: https://www.youtube.com/watch?v=V3tdslM7X5w Cochlear Implant: https://www.youtube.com/watch?v=-GA9gEh1fLs

Hearing Tests Do-it-yourself Test: Frequencies: Hold your hand up as though you are taking an oath. Rub your thumb and forefinger together. Do you hear a “scritching” sound? Frequencies: http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/

Penny Activity Using the guide sheet, try to determine in what year the formula for pennies changed. Older pennies have a fuller, richer, more bell-like sound Newer pennies have a thin, “tinny” sound

Taste Chemical Sense Receptor cells on surface of tongue: respond to chemical structure of foods you eat Five tastes: Salty, sour, sweet, bitter and umami Combination of taste and smell: they work together. Think about eating when you have a stuffy nose…

Taste How We Taste http://www.pbslearningmedia.org/resource/tdc02.sci.life.reg.taste/the-sense-of-taste/ Super Tasters http://www.pbslearningmedia.org/resource/nvsn6.sci.bio.taster/what-is-a-supertaster/

Supertasters https://www.youtube.com/watch?v=Hd_mxyMAJJY

Smell Chemical Sense Molecules given of by substances circulate in the air Olfactory cells process Taste + Smell = Flavor Taste alone cannot give you flavor

How do we smell? How we smell: https://www.youtube.com/watch?v=snJnO6OpjCs

Touch Physical connection with outside world Skin has receptors that respond to various kinds of stimulation Pain, warmth, cold, and pressure Skin sensations flow from these four basic skin senses Itch= gentle stimulation of pain receptors, Hot= simultaneous warm and cold, Wetness= simultaneous stimulation of cold and pressure Brain affects how you perceive pain https://www.youtube.com/watch?v=I7wfDenj6CQ

Phantom Limb Syndrome The brain creates the perception of sensation in a limb that is no longer there https://www.youtube.com/watch?v=ySIDMU2cy0Y https://www.youtube.com/watch?v=o4FZtE-Lz2U Common among amputees

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