Proactive interference by cues presented without outcomes: differences in context specificity of latent inhibition and conditioned inhibition

Miguez, Gonzalo, McConnell, Bridget, Polack, Cody W., and Miller, Ralph R. (2018) Proactive interference by cues presented without outcomes: differences in context specificity of latent inhibition and conditioned inhibition. Learning & Behavior, 46 (3). pp. 265-280.

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This report is part of a larger project examining associative interference as a function of the nature of the interfering and target associations. Lick suppression experiments with rats assessed the effects of context shifts on proactive outcome interference by latent inhibition (LI) and Pavlovian conditioned inhibition (CI) treatments on subsequently trained Pavlovian conditioned excitation treatment. LI and CI were trained in Context A during Phase 1, and then excitation treatment was administered in Context B during Phase 2, followed by tests for conditioned excitation in Contexts A, B, or C. Experiment 1 preliminarily established our LI and CI treatments and resulted in equally retarded acquisition of behavioral control when the target cue was subsequently trained as a conditioned excitor and tested in Context A. However, only CI treatment caused the target to pass a summation test for inhibition. Centrally, Experiment 2 consisted of LI and CI treatments in Context A followed by excitatory training in Context B. Testing found low excitatory control by both LI and CI cues in Context A relative to strong excitatory control in Context B, but CI treatment transferred to Context C more strongly than LI treatment. Experiment 3 determined that LI treatment failed to transfer to Context C even when the number of LI trials was greatly increased. Thus, first-learned LI appears to be relatively context specific, whereas first-learned CI generalizes to a neutral context. These observations add to existing evidence that LI and CI treatments result in different types of learning that diverge sharply in transfer to a novel test context.

Item ID: 52881
Item Type: Article (Research - C1)
ISSN: 1543-4508
Keywords: cs-preexposure effect; conditioned inhibition; context specificity; latent inhibition; outcome interference; proactive interference
Funders: National Institute of Mental Health (NIMH), Fullbright Program, Comisión Nacional de Investigación Científica y Tecnológica (CONICYTás)
Projects and Grants: MIMH grant 33881, CONICYTás FONDECYT #1160132, CONICYTás PAI #79140028
Date Deposited: 23 Jul 2018 04:18
FoR Codes: 52 PSYCHOLOGY > 5299 Other psychology > 529999 Other psychology not elsewhere classified @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970117 Expanding Knowledge in Psychology and Cognitive Sciences @ 100%
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