Cited by 413Neuroscience and Neuropharmacology ResearchSleep and Wakefulness ResearchNeural dynamics and brain function

Pattern-Specific Associative Long-Term Potentiation Induced by a Sleep Spindle-Related Spike Train

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Rosanova, Mario, Ulrich, Daniel·2005·The Journal of Neuroscience

Abstract

Spindles are non-rapid eye movement (non-REM) sleep EEG rhythms (7-14 Hz) that occur independently or in association with slow oscillations (0.6-0.8 Hz). Despite their proposed function in learning and memory, their role in synaptic plasticity is essentially unknown. We studied the ability of a neuronal firing pattern underlying spindles in vivo to induce synaptic plasticity in neocortical pyramidal cells in vitro. A spindle stimulation pattern (SSP) was extracted from a slow oscillation upstate that was recorded in a cat anesthetized with ketamine-xylazine, which is known to induce a sleep-like state. To mimic the recurrence of spindles grouped by the slow oscillation, the SSP was repeated every 1.5 s (0.6 Hz). Whole-cell patch-clamp recordings were obtained from layer V pyramidal cells of rat somatosensory cortex with infrared videomicroscopy, and composite EPSPs were evoked within layers II-III. Trains of EPSPs and action potentials simultaneously triggered by the SSP induced an NMDA receptor-dependent short-term potentiation (STP) and an L-type Ca2+ channel-dependent long-term potentiation (LTP). The number of spindle sequences affected the amount of STP-LTP. In contrast, spindle trains of EPSPs alone led to long-term depression. LTP was not consistently induced by a regular firing pattern, a mirrored SSP, or a randomized SSP; however, a synthetic spindle pattern consisting of repetitive spike bursts at 10 Hz reliably induced STP-LTP. Our results show that spindle-associated spike discharges are efficient in modifying excitatory neocortical synapses according to a Hebbian rule. This is in support of a role for sleep spindles in memory consolidation.

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Crossref · 10.1523/jneurosci.2149-05.2005

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  • Repeated spindle-associated spike discharges efficiently triggered LTP in neocortical synapses in in vitro models.

    “Repeated spindle-associated spike discharges efficiently triggered LTP in neocortical synapses in in vitro models (1012, 1197).”

    From About Sleep's Role in Memory (2013) · cites this paper as [1012]

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Authors
Rosanova, M., & Ulrich, D.
Affiliations
University of Bern (CH)
Corresponding author
Ulrich, Daniel
Venue
The Journal of Neuroscience
Published
2005-10-12
Volume
25
Issue
41
Pages
9398-9405
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2003326720
Cited by
413
References
6
Citations by year
2026: 4 · 2025: 13 · 2024: 21 · 2023: 15 · 2022: 20 · 2021: 16 · 2020: 27 · 2019: 42 · 2018: 25 · 2017: 28 · 2016: 32 · 2015: 22 · 2014: 26 · 2013: 28 · 2012: 14
FWCI
3.27
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • Canadian Institutes of Health Research
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
sleep spindles, long-term potentiation, short-term potentiation, slow oscillations, synaptic plasticity, NMDA receptor, L-type calcium channels, Hebbian learning, spike trains, memory consolidation, somatosensory cortex, pyramidal neurons, NREM sleep
MeSH terms
Action Potentials, Animals, Cats, Male, Sleep, Somatosensory Cortex, Rats, Wistar, Long-Term Potentiation, Rats

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