Cited by 924Memory and Neural MechanismsNeural dynamics and brain functionNeurogenesis and neuroplasticity mechanisms

Awake hippocampal sharp-wave ripples support spatial memory

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Jadhav, Shantanu P., Kemere, Caleb, German, P. Walter, Frank, Loren M.·2012·Science

Abstract

Spatial Memory Perturbation: The hippocampus is important for learning and memory. However, it is not clear which patterns of neural activity in the hippocampus support specific mnemonic functions. Jadhav et al. (p. 1454 , published online 3 May) developed a real-time analysis system to detect and selectively interrupt a certain type of hippocampal neuronal network event—sharp-wave ripples—during learning. In awake animals, loss of sharp-wave ripples and associated memory replay activity caused a learning deficit specific to spatial working memory but had no effect on reference memory. This learning deficit was present despite the preservation of place-field representations and replay activity during rest.

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Crossref · 10.1126/science.1217230

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  • Wake replay is expected not to interfere with consolidation only when it is not offline but occurs briefly after encoding in the very same context as the encoded event.

    “Along this line, wake replay is expected not to interfere with consolidation only when it is not ''offline'' but occurs briefly after encoding in the very same context as the encoded event.284,285,293”

    From Sleep—A brain-state serving systems memory consolidation (2023) · cites this paper as [285]

    The Abstract describes awake replay during learning and distinguishes its role from rest/sleep SWR activity associated with consolidation. It does not say that wake replay avoids interfering with consolidation only if it occurs briefly after encoding in the same context; that timing and exclusivity condition is unsupported. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • Message passing-based planning in CSCGs involves forward and backward sweeps from the current state, and is akin to replays in the hippocampus.

    “Such message passing–based planning in CSCGs involves forward and backward sweeps from the current state, and is akin to replays in the hippocampus (38, 39).”

    From Space is a latent sequence: A theory of the hippocampus (2024) · cites this paper as [39]

  • Disturbing wake replay activity impairs memory formation, indicating that neuronal reactivations of newly formed representations represent a common core process for consolidation during sleep and wakefulness.

    “Disturbing such wake replay activity has also been found to impair memory formation, 284,285 indicating that neuronal reactivations of newly formed representations represent a common core process for consolidation during sleep and wakefulness.”

    From Sleep—A brain-state serving systems memory consolidation (2023) · cites this paper as [285]

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Research works printed but not linked: 5

  1. [2]Eichenbaum H Cohen NJ From Conditioning to Conscious Recollection Oxford Univ. Press New York 2001
  2. [5]O’Keefe J Nadel L The Hippocampus as a Cognitive Map Oxford Univ. Press London 1978
  3. [8]O’Neill J Senior T Csicsvari J Neuron 49 143 2006 16387646
  4. [18]Ego-Stengel V Wilson MA Hippocampus 20 1 2010 19816984 PMC2801761
  5. [28]O’Neill J Senior TJ Allen K Huxter JR Csicsvari J Nat Neurosci 11 209 2008 18193040

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Authors
Jadhav, S. P., Kemere, C., German, P. W., & Frank, L. M.
Affiliations
University of California, San Francisco (US)
Corresponding author
Frank, Loren M.
Venue
Science
Published
2012-06-15
Volume
336
Issue
6087
Pages
1454-1458
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2085256822
Cited by
924
References
32
Citations by year
2026: 57 · 2025: 89 · 2024: 73 · 2023: 63 · 2022: 73 · 2021: 65 · 2020: 58 · 2019: 103 · 2018: 79 · 2017: 71 · 2016: 41 · 2015: 43 · 2014: 58 · 2013: 41 · 2012: 9
FWCI
24.71
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH080283)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
hippocampus, sharp-wave ripples, spatial memory, spatial learning, memory replay, memory-guided decision-making
MeSH terms
Animals, Decision Making, Electric Stimulation, Hippocampus, Male, Memory, Memory, Short-Term, Nerve Net, Space Perception, Wakefulness, Maze Learning, Rats, Long-Evans, Rats, Synaptic Potentials, CA1 Region, Hippocampal, Brain Waves

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