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Cogn Affect Behav Neurosci. 2008 Jun;8(2):211-21.

Overcoming suppression in order to remember: contributions from anterior cingulate and ventrolateral prefrontal cortex.

Author information

  • 1Department of Psychology, Stanford University, Stanford, California 94305-2130, USA. bkuhl@stanford.edu

Abstract

The ability to remember is often compromised by competition from irrelevant memories. However, acts of selective remembering can alter the competitive relationship between memories; memories that are selected against are weakened, whereas those that are retrieved are strengthened. Whereas the weakening of selected-against memories is typically evidenced by subsequently poorer recall of these memories, the present study tested the hypothesis that when previously selected-against memories can subsequently be successfully retrieved, such acts of successful retrieval are associated with engagement of neurobiological mechanisms that serve to detect and overcome competition. Consistent with this hypothesis, fMRI revealed that anteriorcingulate cortex and right ventrolateral prefrontal cortex are differentially engaged during successful retrieval of previously selected-against memories, and that their engagement is directly related to the magnitude of weakening that is induced by prior acts of selecting against these memories.

PMID:
18589510
[PubMed - indexed for MEDLINE]
PMCID:
PMC2490713
Free PMC Article
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