Journal
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL BEHAVIORAL PROCESSES
Volume 31, Issue 3, Pages 334-340Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0097-7403.31.3.334
Keywords
Pavlovian conditioning; higher order conditioning; irrelevant incentive effect; motivational modulation; rat
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Funding
- NIMH NIH HHS [MH56446] Funding Source: Medline
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Two experiments examined the motivational specificity of the associations that support 2nd-order conditioning. In the 1st phase of each experiment rats were exposed to 2 visual conditioned stimuli (CSs) paired with either a saline or food pellet unconditioned stimulus (US) prior to exposure to 2nd-order conditioning using 2 auditory CSs, 1 paired with each visual CS. Rats' motivational state was then shifted prior to a test such that if and only if specific motivational features of the 1st-order training US played a role in the 2nd-order associative structure would responding to the 2nd-order cues shift appropriately with the state change. Even when the US was irrelevant to the training motivational state, shifts in state revealed that it was encoded within the associative structure supporting 2nd-order responding.
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