ch.3 Perception Flashcards
Sensation vs. Perception
sensation is the stimuli around us that we feel, and perception is how we take it into our minds
Sensation
is the process that allows our brains to take in information via our five senses, which can then be experienced and interpreted by the brain.
Perception
experiences resulting from stimulation of the senses
What cognitive skills are involved in perception?
because perception involves the senses, skills would include use of touch, taste, smell, hearing and vision.
Bottom-up processing
begins with the stimulation of the receptors, “the bottom” and sends the signals to the brain
Top-down processing
processing that originates in the brain, at the “top” of the perceptual system and sends the signals to the 5 senses
Example of Bottom-up processing
using your nose to smell food, and deciding whether it smells good or bad
Example of Top-down processing
say the food you smelled was milk, you would know next time you smelled bad milk it meant it was sour. You had a previous perception of the smell already in your mind
What are the 3 Gestalt Laws of Perceptual Organization?
1) Good Continuation
2) Law of Pragnanz
3) Similarity
these are used to explain the way elements are grouped together to create larger objects
Good continuation
the principle that states “objects that are overlapped by other objects are perceived as continuing behind the overlapping object”
Ex: coiled rope
Law of Pragnanz
the principle that states “every stimulus pattern is seen in such a way that the resulting structure is as simple as possible”
What are some other names for the Law of Pragnanz?
principle of good figure and the principle of simplicity
Similarity
the principle that states “similar things appear to be grouped together”
Speech Segmentation
the ability to when one word ends and the next one begins
Likelihood Principle
the principle that states “we perceive the object that is most likely to have caused the pattern of stimuli we have received. “
Ex: seeing two rectangles, one covering the other, it is more likely than one rectangle and a different shape being attached