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The benefits of targeted memory reactivation for consolidation in sleep are contingent on memory accuracy and direct cue-memory associations

Cairney, Scott A.; Lindsay, Shane; Sobczak, Justyna M.; Paller, Ken A.; Gaskell, M. Gareth

Authors

Scott A. Cairney

Justyna M. Sobczak

Ken A. Paller

M. Gareth Gaskell



Abstract

Objectives: To investigate how the effects of targeted memory reactivation (TMR) are influenced by memory accuracy prior to sleep and the presence or absence of direct cue-memory associations. Methods: 30 participants associated each of 50 pictures with an unrelated word and then with a screen location in two separate tasks. During picture-location training, each picture was also presented with a semantically related sound. The sounds were therefore directly associated with the picture locations but indirectly associated with the words. During a subsequent nap, half of the sounds were replayed in slow wave sleep (SWS) (TMR). The effect of TMR on memory for the picture locations (direct cue-memory associations) and picture-word pairs (indirect cue-memory associations) was then examined. Results: TMR reduced overall memory decay for recall of picture locations. Further analyses revealed a benefit of TMR for picture locations recalled with a low degree of accuracy prior to sleep, but not those recalled with a high degree of accuracy. The benefit of TMR for low accuracy memories was predicted by time spent in SWS. There was no benefit of TMR for memory of the picture-word pairs, irrespective of memory accuracy prior to sleep. Conclusions: TMR provides the greatest benefit to memories recalled with a low degree of accuracy prior to sleep. The memory benefits of TMR may also be contingent on direct cue-memory associations.

Citation

Cairney, S. A., Lindsay, S., Sobczak, J. M., Paller, K. A., & Gaskell, M. G. (2016). The benefits of targeted memory reactivation for consolidation in sleep are contingent on memory accuracy and direct cue-memory associations. SLEEP, 39(5), 1139-1150. https://doi.org/10.5665/sleep.5772

Acceptance Date Jan 1, 2016
Online Publication Date May 1, 2016
Publication Date May 1, 2016
Deposit Date Apr 4, 2016
Publicly Available Date Mar 29, 2024
Journal Sleep
Print ISSN 0161-8105
Electronic ISSN 1550-9109
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 39
Issue 5
Article Number PII sp-00533-15
Pages 1139-1150
DOI https://doi.org/10.5665/sleep.5772
Keywords Consolidation, Memory, Reactivation, Slow wave sleep
Public URL https://hull-repository.worktribe.com/output/434796
Publisher URL http://www.journalsleep.org/ViewAbstract.aspx?pid=30600
Additional Information This is a description of an article which has been published in: Sleep, 2016, v.39, issue 5

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Copyright Statement
© Copyright 2016 Associated Professional Sleep Societies, LLC






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