Terms

  • Sensation vs. Perception

sensation: the brain receives input from the sensory organs.

perception: the brain makes sense out of the input from sensory organs.

IMG_1004 - Copy - Copy This is my dog, Hank. I am kissing him in the picture, and I can get the sensation that my lips are touching him, and my perception is that he is really furry.

 

  • Top-Down Processing: using models, ideas, and expectations to interpret sensory information.

 (picture source: www.myfoxphoenix.com )This is a picture I found online, and it is missing a letter, but our top-down processor can tell us that it is missing a T to spell “Gate”.

 

  • Signal Detection Theory: whether or not we can detect a stimulus.

You can sit in Starbucks and you are having your own conversation, but you can hear other people, but you can detect that they are not talking to you, and make them into background noise.

  • Shape Constancy: we perceive the form of familiar objects as constant, even while our retinas receive changing images.

(source found: www.psy.ritsumei.ac.jp) This picture the is the same shape it is just turned different ways, but our brain tells us that it isn’t and even though we can put the same shape over every picture, but our brain can’t see that.

  • Opponent- Processing Theory: Opponent
    retinal processes enables color vision.
    How the retina detects color. If you look at this picture of a discolored American flag, then look at a white page, you will see and after image of what color is actually suppose to be there. (picture source: gettingstronger.org)

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