Cited by 72Sleep and Wakefulness ResearchMemory and Neural MechanismsMemory Processes and Influences

Overnight Sleep Enhances Hippocampus-Dependent Aspects of Spatial Memory.

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Nguyen, Nam D., Tucker, Matthew A., Stickgold, Robert, Wamsley, Erin J.·2013·SLEEP

Abstract

STUDY OBJECTIVES: Several studies have now demonstrated that spatial information is processed during sleep, and that posttraining sleep is beneficial for human navigation. However, it remains unclear whether the effects of sleep are primarily due to consolidation of cognitive maps, or alternatively, whether sleep might also affect nonhippocampal aspects of navigation (e.g., speed of motion) involved in moving through a virtual environment. DESIGN: Participants were trained on a virtual maze navigation task (VMT) and then given a memory test following either a day of wakefulness or a night of sleep. Subjects reported to the laboratory for training at either 10:00am or 10:00pm, depending on randomly assigned condition, and were tested 11 h later. Overnight subjects slept in the laboratory with polysomnography. SETTING: A hospital-based academic sleep laboratory. PATIENTS OR PARTICIPANTS: Thirty healthy college student volunteers. INTERVENTIONS: N/A. MEASUREMENTS AND RESULTS: Point-by-point position data were collected from the VMT. Analysis of the movement data revealed a sleep-dependent improvement in maze completion time (P < 0.001) due to improved spatial understanding of the maze layout, which led to a shortening of path from start to finish (P = 0.01) rather than faster exploration speed through the maze (P = 0.7). CONCLUSIONS: We found that overnight sleep benefitted performance, not because subjects moved faster through the maze, but because they were more accurate in navigating to the goal. These findings suggest that sleep enhances participants' knowledge of the spatial layout of the maze, contributing to the consolidation of hippocampus-dependent spatial information. CITATION: 2013;36(7):1051-1057.

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  1. Tempesta D, Mazza M, Iaria G, De Gennaro L, Ferrara M. A specific defi- cit in spatial memory acquisition in post-traumatic stress disorder and the role of sleep in its consolidation. Hippocampus 2012;22:1154-63.

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Authors
Nguyen, N. D., Tucker, M. A., Stickgold, R., & Wamsley, E. J.
Affiliations
Beth Israel Deaconess Medical Center (US)
Corresponding author
Wamsley, Erin J.
Venue
SLEEP
Published
2013-07-01
Volume
36
Issue
7
Pages
1051-1057
ISSN
  • 0161-8105 (ISSN-L)
  • 1550-9109
OpenAlex
W2075073125
Cited by
72
References
42
Citations by year
2026: 2 · 2025: 7 · 2024: 6 · 2023: 7 · 2022: 4 · 2021: 8 · 2020: 5 · 2019: 3 · 2018: 9 · 2017: 4 · 2016: 6 · 2015: 4 · 2014: 6 · 2013: 1
FWCI
3.11
Type
journal article
Language
en
Open access
Locations
  • SLEEP (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (MH48,832)
  • National Heart, Lung, and Blood Institute (T32HL007901)
  • National Institute of Mental Health (R01MH048832)
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
sleep-dependent memory consolidation, spatial memory, hippocampus, cognitive maps, nocturnal sleep, navigation speed

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