Cited by 214Sleep and Wakefulness ResearchMemory and Neural MechanismsNeural dynamics and brain function

Fine‐tuned coupling between human parahippocampal ripples and sleep spindles

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Clemens, Zsófia, Mölle, Matthias, Erőss, Loránd, Jakus, Rita, Rásonyi, György, Halász, Péter, Born, Jan·2011·European Journal of Neuroscience

Abstract

Sleep‐associated memory consolidation is thought to rely on coordinated information transfer between the hippocampus and neocortex brought about during slow wave sleep (SWS) by distinct local field potential oscillations. Specifically, findings in animals have led to the concept that ripples originating from hippocampus combine with spindles to provide a fine‐tuned temporal frame for a persistent transfer of memory‐related information to the neocortex. The present study focused on characterizing the temporal relationship between parahippocampal ripple activity (80–140 Hz) and spindles recorded from frontal, parietal and parahippocampal cortices in 12 epilepsy patients implanted with parahippocampal foramen ovale electrodes. Overall, parietal and parahippocampal spindles showed closer relationships to parahippocampal ripple activity than frontal spindles, with the latter following parietal and parahippocampal spindles at a variable delay of up to 0.5 s. On a timescale of seconds, ripple activity showed a continuous increase before the peak of parietal and parahippocampal spindles, and decreased thereafter. At a fine timescale of milliseconds, parahippocampal ripple activity was tightly phase‐locked to the troughs of these spindles. The demonstration of spindle phase‐locked ripple activity in humans is consistent with the idea of a temporally fine‐tuned hippocampus‐to‐neocortex transfer of information taking place during SWS.

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  • Fine-grained temporal analyses revealed that the co-occurrence of spindles and ripples leads to the formation of so-called spindle-ripple events where individual ripple events become temporally nested into succeeding troughs of a spindle.

    “Moreover, fine-grained temporal analyses revealed that the co-occurrence of spindles and ripples leads to the formation of so-called”

    From About Sleep's Role in Memory (2013) · cites this paper as [216]

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Authors
Clemens, Z., Mölle, M., Erőss, L., Jakus, R., Rásonyi, G., Halász, P., & Born, J.
Affiliations
  • University of Lübeck (DE)
  • Pázmány Péter Catholic University (HU)
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2010-12-07
Volume
33
Issue
3
Pages
511-520
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1546739573
Cited by
214
References
49
Citations by year
2026: 4 · 2025: 9 · 2024: 13 · 2023: 11 · 2022: 14 · 2021: 12 · 2020: 23 · 2019: 23 · 2018: 9 · 2017: 15 · 2016: 16 · 2015: 9 · 2014: 8 · 2013: 26 · 2012: 10
FWCI
9.29
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (SFB654)
  • Fundação Bial
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
sleep spindles, slow-wave sleep, memory consolidation, phase locking, parahippocampal cortex, parietal cortex, frontal cortex, epilepsy patients, foramen ovale electrodes, local field potentials
MeSH terms
Adult, Electroencephalography, Epilepsy, Hippocampus, Humans, Memory, Middle Aged, Sleep, Neocortex

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