Enhancement of Declarative Memory Performance Following a Daytime Nap Is Contingent on Strength of Initial Task Acquisition
Open accessAbstract
STUDY OBJECTIVES: In this study we examined the benefit of a daytime nap containing only NREM sleep on the performance of three declarative memory tasks: unrelated paired associates, maze learning, and the Rey-Osterrieth complex figure. Additionally, we explored the impact of factors related to task acquisition on sleep-related memory processing. To this end, we examined whether testing of paired associates during training leads to sleep-related enhancement of memory compared to simply learning the word pairs without test. We also examined whether strength of task acquisition modulates sleep-related processing for each of the three tasks. SUBJECTS AND PROCEDURE: Subjects (11 male, 22 female) arrived at 11:30, were trained on each of the declarative memory tasks at 12:15, and at 13:00 either took a nap or remained awake in the sleep lab. After the nap period, all subjects remained in the lab until retest at 16:00. RESULTS: Compared to subjects who stayed awake during the training-retest interval, subjects who took a NREM nap demonstrated enhanced performance for word pairs that were tested during training, but not for untested word pairs. For each of the three declarative memory tasks, we observed a sleep-dependent performance benefit only for subjects that most strongly acquired the tasks during the training session. CONCLUSIONS: NREM sleep obtained during a daytime nap benefits declarative memory performance, with these benefits being intimately tied to how well subjects acquire the tasks and the way in which the information is acquired.
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Other studies revealed greater benefits from sleep for strongly encoded memories or only in well-performing subjects.
“On the other hand, other studies revealed greater benefits from sleep for strongly encoded memories (523, 1172) or only in well-performing subjects (1038, 1215).”
From About Sleep's Role in Memory (2013) · cites this paper as [1215]
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- Authors
- Tucker, M. A., & Fishbein, W.
- Affiliations
- City College of New York (US)
- Corresponding author
- Tucker, Matthew A.
- ORCID
- Tucker, Matthew A.
- Venue
- Sleep
- Publisher
- Oxford University Press (OUP)
- Published
- 2008-02
- Volume
- 31
- Issue
- 2
- Pages
- 197-203
- ISSN
- 0161-8105 (ISSN-L)
- 1550-9109
- PMC
- PMC2225575
- OpenAlex
- W2170288337
- Cited by
- 171
- References
- 31
- Citations by year
- 2026: 4 · 2025: 9 · 2024: 7 · 2023: 9 · 2022: 4 · 2021: 13 · 2020: 8 · 2019: 10 · 2018: 12 · 2017: 15 · 2016: 8 · 2015: 7 · 2014: 11 · 2013: 13 · 2012: 11
- FWCI
- 5.17
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- SLEEP (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- City University of New York
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
- Keywords
- daytime napping, NREM sleep, sleep-dependent memory consolidation, declarative memory, paired associates, maze learning, Rey-Osterrieth Complex Figure Test
- MeSH terms
- Adult, Cognition, Electroencephalography, Female, Humans, Male, Memory, Neuropsychological Tests, Paired-Associate Learning, Semantics, Sleep, Sleep Stages, Time Factors, Wakefulness, Maze Learning
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