Sensation & Perception Flashcards
sensation
Sensation refers to sensing our environment through touch, taste, sight, sound, and smell (the 5 senses). This information is sent to our brain and that’s when perception comes into play
perception
interpret these sensations and therefore make sense of everything around us.
bottom-up processing
begins with sensory receptors and works up to the brains sensory info
top down processing
information processing guiding it to a higher level of mental process
interprets sensory input by drawing experience and expectations
selective attention
focusing conscious awareness on a particular stimulus
transduction
conversion into one form of energy into another
transforms stimulus energies to neural impulses
absolute threshold
the minimum stimulation needed to detect a particular stimulus
signal detection theory
theory that predicts how and when we detect a very faint stimulus
tooth pick activity
difference threshold
the minimum difference needed between two stimuli to notice the change
movie theater lights
Weber’s Law
the principle that to be perceived as diff to stimuli must differ by a minimum percentage
sensory adaption
diminished sensitivity
once we are exposed to a stimulus we are less aware of it bc nerve cells fire quickly
perceptual set
a mental predisposition to perceive one thing and not the other
a set of mental tendencies and assumptions that great affects us (top-down)
visual capture
dseg
convergence
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retinal disparity
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