Document Detail

Instructed extinction differentially affects the emotional and cognitive expression of associative fear memory.
MedLine Citation:
PMID:  22958209     Owner:  NLM     Status:  Publisher    
Instructed extinction after fear conditioning is relatively effective in attenuating electrodermal responding. Testing the single-process account of fear learning, we examined whether this manipulation similarly affects the startle response. Skin conductance responses (SCRs), startle responses, and online unconditioned stimulus (US) expectancy ratings were measured during fear acquisition (Day 1), extinction, and reinstatement (Day 2). Before extinction onset, half of the subjects were instructed that the conditioned stimulus would not be followed by the US (Instructed Extinction) whereas the other subjects were not instructed (Normal Extinction). This simple instruction completely abolished both differential SCR and US expectancy ratings, but not the startle fear response. Although the manipulation facilitated extinction learning, it did not prevent the recovery of the startle response. The present findings are better explained by a dual- rather than a single-process account of fear learning.
Dieuwke Sevenster; Tom Beckers; Merel Kindt
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-7
Journal Detail:
Title:  Psychophysiology     Volume:  -     ISSN:  1540-5958     ISO Abbreviation:  Psychophysiology     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-10     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.
Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands.
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