Examlex
Premature contractions,or extra systoles,often occur with lack of sleep,too much caffeine or nicotine,alcoholism,or heart damage.
Conditioned Stimulus
A previously neutral stimulus that, after being paired with an unconditioned stimulus, elicits a conditioned response.
Unlearned Reaction
A natural, instinctive response to a stimulus that occurs without the need for prior learning or experience.
Reflexive Reaction
An automatic, involuntary response to a stimulus.
Unconditioned Stimulus
In classical conditioning, a stimulus that naturally and automatically triggers a response without any learning needed.
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