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unconditioned stimulus

   Also found in: Medical, Legal, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
unconditioned stimulus
n. Psychology
A stimulus that evokes an unconditioned response.

unconditioned stimulus
n
(Psychology) Psychol any stimulus evoking an unlearnt response, esp in the context of classical conditioning, in which the conditioned stimulus is followed by the unconditioned one


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Via imaging technique, researchers could see that some neurons were activated by the saccharine, or the conditioned stimulus, and the lithium chloride or the unconditioned stimulus activated others.
Underlying Process The mechanism of action in alarm treatment was initially described as classical conditioning, with the alarm as the unconditioned stimulus, bladder distention as the conditioned stimulus, and waking as the conditioned response (Mowrer & Mowrer, 1938).
 
 
 
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