Comparing the effects of nocturnal sleep and daytime napping on declarative memory consolidation

Lo, June C.; Dijk, Derk Jan; Groeger, John A.

Abstract

Nocturnal sleep and daytime napping facilitate memory consolidation for semantically related and unrelated word pairs. We contrasted forgetting of both kinds of materials across a 12-hour interval involving either nocturnal sleep or daytime wakefulness (experiment 1) and a 2-hour interval involving either daytime napping or wakefulness (experiment 2). Beneficial effects of post-learning nocturnal sleep and daytime napping were greater for unrelated word pairs (Cohen’s d = 0.71 and 0.68) than for related ones (Cohen’s d = 0.58 and 0.15). While the size of nocturnal sleep and daytime napping effects was similar for unrelated word pairs, for related pairs, the effect of nocturnal sleep was more prominent. Together, these findings suggest that sleep preferentially facilitates offline memory processing of materials that are more susceptible to forgetting.

Citation

Lo, J. C., Dijk, D. J., & Groeger, J. A. (2014). Comparing the effects of nocturnal sleep and daytime napping on declarative memory consolidation. PLoS ONE, 9(9), Article e108100. https://doi.org/10.1371/journal.pone.0108100

• Journal Article Type: Article
• Acceptance Date: Aug 20, 2014
• Online Publication Date: Sep 17, 2014
• Publication Date: Sep 17, 2014
• Deposit Date: Apr 20, 2016
• Publicly Available Date: Apr 20, 2016
• Journal: PLoS ONE
• Print ISSN: 1932-6203
• Publisher: Public Library of Science
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 9
• Article Number: e108100
• DOI: https://doi.org/10.1371/journal.pone.0108100
• Keywords: Memory consolidation, Sleep, Napping, Cognition
• Public URL: https://hull-repository.worktribe.com/output/436532
• Publisher URL: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0108100
• Additional Information: Copy of article first published in: PLoS ONE, 2014, v.9, issue 9.
• Contract Date: Apr 20, 2016