Reward associations reduce behavioral interference by changing the temporal dynamics of conflict processing.

dc.contributor.author

Krebs, Ruth M

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Boehler, Carsten N

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Appelbaum, Lawrence G

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Woldorff, Marty G

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Geng, Joy J

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United States

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2016-05-11T19:57:48Z

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2013

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Associating stimuli with the prospect of reward typically facilitates responses to those stimuli due to an enhancement of attentional and cognitive-control processes. Such reward-induced facilitation might be especially helpful when cognitive-control mechanisms are challenged, as when one must overcome interference from irrelevant inputs. Here, we investigated the neural dynamics of reward effects in a color-naming Stroop task by employing event-related potentials (ERPs). We found that behavioral facilitation in potential-reward trials, as compared to no-reward trials, was paralleled by early ERP modulations likely indexing increased attention to the reward-predictive stimulus. Moreover, reward changed the temporal dynamics of conflict-related ERP components, which may be a consequence of an early access to the various stimulus features and their relationships. Finally, although word meanings referring to potential-reward colors were always task-irrelevant, they caused greater interference compared to words referring to no-reward colors, an effect that was accompanied by a relatively early fronto-central ERP modulation. This latter observation suggests that task-irrelevant reward information can undermine goal-directed behavior at an early processing stage, presumably reflecting priming of a goal-incompatible response. Yet, these detrimental effects of incongruent reward-related words were absent in potential-reward trials, apparently due to the prioritized processing of task-relevant reward information. Taken together, the present data demonstrate that reward associations can influence conflict processing by changing the temporal dynamics of stimulus processing and subsequent cognitive-control mechanisms.

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/23326530

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PONE-D-12-24886

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1932-6203

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https://hdl.handle.net/10161/12004

dc.language

eng

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Public Library of Science (PLoS)

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PLoS One

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10.1371/journal.pone.0053894

dc.subject

Adult

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Attention

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Behavior

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Brain

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Brain Mapping

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Cognition

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Conflict (Psychology)

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Evoked Potentials

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Female

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Humans

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Male

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Photic Stimulation

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Psychomotor Performance

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Reaction Time

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Reward

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Stroop Test

dc.title

Reward associations reduce behavioral interference by changing the temporal dynamics of conflict processing.

dc.type

Journal article

duke.contributor.orcid

Appelbaum, Lawrence G|0000-0002-3184-6725

duke.contributor.orcid

Woldorff, Marty G|0000-0002-2683-4551

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/23326530

pubs.begin-page

e53894

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1

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Basic Science Departments

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Center for Cognitive Neuroscience

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Clinical Science Departments

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Duke

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Duke Institute for Brain Sciences

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Duke Science & Society

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Duke-UNC Center for Brain Imaging and Analysis

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Initiatives

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Institutes and Centers

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Institutes and Provost's Academic Units

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Neurobiology

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Psychiatry & Behavioral Sciences

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Psychiatry & Behavioral Sciences, Brain Stimulation and Neurophysiology

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Psychiatry & Behavioral Sciences, Translational Neuroscience

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Psychology and Neuroscience

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School of Medicine

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Trinity College of Arts & Sciences

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University Institutes and Centers

pubs.publication-status

Published

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8

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