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Lecture 8

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Psychology 2115A/B

Lecture 8 10/17/2012 11:23:00 AM Taste  The stimulus for taste is the molecules of substances o On to you’re tongue, then you can taste them  Taste shares things with smell, if you cant smell it you cant fully taste  The bumps on your tongue are called papilla- they contain your taste buds o Taste buds are like bowls o They aren’t everywhere on your tongue o As you age, and as you eat more than dull substances- food attacks your taste buds and they die off o As a child more taste buds – why you’re young you may taste something different then your parents o Smoking kills off taste buds o More adults lose their taste buds that were on their cheeks  There are four types of papilla – three of them have taste buds in them  The one that doesn’t is located at the front edge of your tongue, used as a barrier for food so that it doesn’t fall of your tongue Psychological manifestation  Intensity: o The more the intensity (of your food) the more intense it will seem (the more you taste) o Stevens power law works here o For many taste the exponent for the power function is close to 1 (double the material double the taste) o There are different sensitivities to different tastes o Taste does work like smell when it comes to adaptation: you adapt thoroughly to taste o Takes about 10-30 seconds to recreate the first sensation you had when you first ate something o THERE IS NOT ADAPTAION TO VISUAL STIMULI  Quality: o There are a set of primary tastes  Salty  Sweet  Bitter  Sour o There were not all agreed upon, thought that there were others  They think that there is a fifth primary, some people think there is a sixth primary o The taste pyramid:  Salty  sweet sour Bitter  they are equal distance from one another  this model does not work if we add a fifth primary taste  the taste buds tend to be neutral, they respond to all tastes not specific  but specific places one your tongue are more sensitive to each of these tastes  at the front of you’re tongue- it responds to bitter, as well as the back of the tongue  the tongue is serving as a warning mechanism o any thing that generates a bitter response is not good for you o example coffee: but eventually you will start to like the taste because the warning mechanism will give up (kill some off your taste buds) but more a matter of identifying what you like about the taste, and less about what you don’t like Touch & Pain  The sense organ is your skin  Skin has three layers o the epidermis (outside)  la
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