Motivated Memories: Effects of reward and recollection in the core recollection network and beyond

Journal article


Elward, R., Vilberg, K.L. and Rugg, M.D. (2015). Motivated Memories: Effects of reward and recollection in the core recollection network and beyond. Cerebral Cortex. 25 (9), pp. 3159-3166. https://doi.org/10.1093/cercor/bhu109
AuthorsElward, R., Vilberg, K.L. and Rugg, M.D.
Abstract

© The Author 2014. Published by Oxford University Press. All rights reserved. fMRI was employed to assess whether the neural correlates of accurate source memory are modulated by the reward value of recollected information. Study items comprised pictures of objects, each paired with a depiction of 1 of 2 coins. The reward value of the coins ($2.00 vs. $0.02) was disclosed after study. At test, a source memory procedure was employed in which subjects discriminated between studied and unstudied objects and, for objects judged studied, indicated the identity of the coin paired with the object at study. Correct judgments earned a reward corresponding to the value of the coin, whereas incorrect judgments were penalized. No regions were identified where the magnitude of recollection effects was modulated by reward. Exclusive effects of source accuracy were evident in the hippocampus. Different striatal sub-regions demonstrated exclusive recollection effects, exclusive reward effects, and overlap between the 2 effects. The left angular gyrus and medial prefrontal cortex were additively responsive to source accuracy and the reward. The findings suggest that reward value and recollection success are conjointly but independently represented in at least 2 cortical regions and that striatal retrieval success effects cannot be accounted for in terms of a single construct, such as goal satisfaction

Year2015
JournalCerebral Cortex
Journal citation25 (9), pp. 3159-3166
PublisherOxford University Press
ISSN1047-3211
Digital Object Identifier (DOI)https://doi.org/10.1093/cercor/bhu109
Web address (URL)https://academic.oup.com/cercor/article/25/9/3159/2926131
Publication dates
Print01 Sep 2015
Online28 May 2014
Publication process dates
Accepted28 Apr 2014
Deposited16 Aug 2019
Accepted author manuscript
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Open
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