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Feedback-related potentials are sensitive to sequential order of decision outcomes in a gambling task.
MedLine Citation:
PMID:  23066877     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The feedback negativity (FN) has been repeatedly linked to expectancies about decision outcomes. Sequential outcome order is likely to influence such expectancies but has been widely disregarded. We therefore investigated whether the three-trial order of decision outcomes in a gambling task influences the FN as well as the P200 and P300. All three deflections were not only influenced by the outcome valence of the current trial but also by the outcomes of the two preceding trials. In detail, the FN and P300 to any current trial outcome were largest when the outcomes in the two preceding trials had an opposite valence. The P200 was highest in the context of two directly preceding wins, indicating that it may reflect representations of local outcome history. Our findings demonstrate that neural systems involved in decision outcome processing dynamically and continuously integrate the local outcome history for the evaluation of present outcomes.
Authors:
Roman Osinsky; Patrick Mussel; Johannes Hewig
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-15
Journal Detail:
Title:  Psychophysiology     Volume:  -     ISSN:  1540-5958     ISO Abbreviation:  Psychophysiology     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Society for Psychophysiological Research.
Affiliation:
Department of Psychology, University of Würzburg, Würzburg, Germany.
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