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Publication Detail
Basal Ganglia Activity Mirrors a Benefit of Action and Reward on Long-Lasting Event Memory
  • Publication Type:
    Journal article
  • Authors:
    Koster R, Guitart-Masip M, Dolan RJ, Düzel E
  • Publication date:
    01/12/2015
  • Pagination:
    4908, 4917
  • Journal:
    Cerebral Cortex
  • Volume:
    25
  • Issue:
    12
  • Status:
    Published
  • Country:
    United States
  • Print ISSN:
    1460-2199
  • PII:
    bhv216
  • Language:
    English
  • Keywords:
    Pavlovian, decision-making, fMRI, hippocampus
  • Notes:
    © The Author 2015. Published by Oxford University Press This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The expectation of reward is known to enhance a consolidation of long-term memory for events. We tested whether this effect is driven by positive valence or action requirements tied to expected reward. Using a functional magnetic resonance imaging (fMRI) paradigm in young adults, novel images predicted gain or loss outcomes, which in turn were either obtained or avoided by action or inaction. After 24 h, memory for these images reflected a benefit of action as well as a congruence of action requirements and valence, namely, action for reward and inaction for avoidance. fMRI responses in the hippocampus, a region known to be critical for long-term memory function, reflected the anticipation of inaction. In contrast, activity in the putamen mirrored the congruence of action requirement and valence, whereas other basal ganglia regions mirrored overall action benefits on long-lasting memory. The findings indicate a novel type of functional division between the hippocampus and the basal ganglia in the motivational regulation of long-term memory consolidation, which favors remembering events that are worth acting for.
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