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Cited by 39Sleep and Wakefulness ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Grouping of MEG gamma oscillations by EEG sleep spindles

Ayoub, Amr, Mölle, Matthias, Preissl, Hubert, Born, Jan·2012·NeuroImage
DOI 10.1016/j.neuroimage.2011.08.023
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Abstract

Studies have revealed an association between EEG sleep spindles and processing of memories during sleep. Here we investigated whether there is a temporal relation between sleep spindles and MEG oscillatory activity in the gamma frequency band (>30 Hz) which is considered to reflect local cortical processing of memory representations. MEG and simultaneous EEG (at Cz) were obtained in subjects during sleep together with standard polysomnography. As expected EEG spindles were correlated with power increases in MEG spindle (12.5-15.5 Hz) power mainly over prefrontal and occipital cortical areas. During EEG spindles we revealed both transient significant increases and decreases in MEG power, with decreases occurring significantly more often than increases. The modulations in gamma power occurred mainly at sites of increased MEG spindle power, and more often during peaks than troughs within the EEG spindle cycle. Cross-frequency coherence analyses confirmed a strong phase-coupling of gamma band activity with the spindle rhythm. The findings are consistent with the idea that spindles provide a fine-tuned temporal frame for integrated cortical memory processing during sleep.

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Crossref · 10.1016/j.neuroimage.2011.08.023

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  • In the neocortex, single spindles typically express as local phenomena and are restricted to specific regions and circuits, regardless of whether or not they are synchronized in phase with central thalamic spindle generation.

    “Importantly, this research revealed that in the neocortex, single spindles typically express as a local phe-nomena and are restricted to specific regions and circuits, regardless of whether or not they are synchronized in phase with central thalamic spindle generation.”

    From About Sleep's Role in Memory (2013) · cites this paper as [52]

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Authors
Ayoub, A., Mölle, M., Preissl, H., & Born, J.
Affiliations
  • University of Lübeck (DE)
  • University of Tübingen (DE)
ORCID
Venue
NeuroImage
Publisher
Elsevier BV
Published
2012-01
Volume
59
Issue
2
Pages
1491-1500
ISSN
1053-8119 (ISSN-L)
DOI
10.1016/j.neuroimage.2011.08.023
OpenAlex
W1983998322
Cited by
39
References
5
Citations by year
2026: 1 · 2025: 1 · 2024: 4 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 4 · 2015: 6 · 2014: 4 · 2013: 6 · 2012: 3
FWCI
2.11
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • DFG SFB 654 ‘Plasticity and Sleep’
  • Germany's Excellence Initiative (DFG GSC 235/1)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
sleep spindles, cross-frequency coupling, prefrontal cortex, occipital cortex, cortical oscillations
MeSH terms
Adult, Biological Clocks, Brain, Electroencephalography, Female, Humans, Male, Sleep, Magnetoencephalography, Young Adult

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