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exam 2
Psy 120 exam 2chapters 6,7, 9 and 10
10
Psychology
Undergraduate 1
03/12/2014

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Term
sensation
Definition
the detection, by sense organs of physical energy emitted or reflected by physical objects (the detection and encoding of stimulus energies by the nervous system
Term
perception
Definition
the process by which the brain organizes and interprets sensory information (is about interpreting sensory input)
Term
bottom up
Definition
The piecing together of systems to give rise to more complex systems.
Term
top down
Definition
Breaking down of a system to gain insight into its compositional sub systems
Term
thresholds
Definition
the magnitude or intensity that must be exceeded for a certain reaction, phenomenon, result, or condition to occur or be manifested
Term
absolute thresholds
Definition
the smallest quantity of physical energy that can be reliably detected by an observer
Term
difference thresholds
Definition
the smallest difference in stimulation that fan be reliably detected by an observer when two stimuli are compared, also called just noticeable difference, (JND)
Term
synesthesia
Definition
a condition in which stimulation of one sense also evokes
Term
synesthesia
Definition
a condition in which stimulation of one sense also evokes another
Term
sensory adaptation
Definition
the reduction or disappearance of sensory responsiveness when stimulation is unchanging or repetitious ( diminishing sensitivity to an unchanging stimulus)
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