Cited by 197Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Activity-dependent dendritic spine neck changes are correlated with synaptic strength

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Araya, Roberto, Vogels, Tim P., Yuste, Rafael·2014·Proceedings of the National Academy of Sciences

Abstract

Significance: Dendritic spines are the main recipients of excitatory information in the brain, and though it is accepted that they must serve an essential function in neural circuits, their precise role remains ill-defined. Here, using minimal synaptic stimulation, we show that spine neck length correlates inversely with synaptic efficacy. In addition, we discovered a previously unidentified form of spine plasticity following a spike timing-dependent plasticity protocol, characterized by rapid shortening of spine neck length and concomitant increases in synaptic strength. These results provide new insights for our understanding of synaptic plasticity, and could provide an explanation for the presence of thousands of long-necked spines in the dendrites of pyramidal neurons, whose somatic synaptic contribution would otherwise be small or negligible.

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Crossref · 10.1073/pnas.1321869111

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  • Reduction of spine neck length after synaptic potentiation mediates enhanced electric coupling of spine and dendrite, thereby increasing the influence of the potentiated spine on the dendritic and somatic membrane potential.

    “It was shown that reduction of spine neck length after synaptic potentiation mediates enhanced electric coupling of spine and dendrite, thereby increasing the influence of the potentiated spine on the dendritic and somatic membrane potential (Araya et al., 2014; Tønnesen et al., 2014).”

    From Barriers in the brain: resolving dendritic spine morphology and compartmentalization (2014) · cites this paper as Araya et al., 2014

    The STDP results report spine-neck shortening alongside increased evoked potentials, and the Discussion says shortened spines become functionally connected to the soma. But the Biophysical Simulations and Discussion do not establish that enhanced electrical coupling mediates the increase: changes in synaptic conductance could also explain it. The copy does not directly demonstrate the claimed increase in dendritic membrane potential. (LLM, conf=0.88)

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1 of the 66 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Malenka RC, Bear MF (2004) LTP and LTD: An embarrassment of riches. Neuron 44(1): 5-21.

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Authors
Araya, R., Vogels, T. P., & Yuste, R.
Affiliations
  • Université de Montréal (CA)
  • University of Oxford (GB)
  • Columbia University (US)
Corresponding author
Araya, Roberto
Venue
Proceedings of the National Academy of Sciences
Published
2014-06-30
Volume
111
Issue
28
Pages
E2895-904
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2164811687
Cited by
197
References
66
Citations by year
2026: 10 · 2025: 7 · 2024: 13 · 2023: 24 · 2022: 20 · 2021: 21 · 2020: 25 · 2019: 10 · 2018: 13 · 2017: 18 · 2016: 18 · 2015: 12 · 2014: 6
FWCI
8.23
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust (100000, 090309/Z/09/Z, 090309)
  • European Commission (268436)
  • Multidisciplinary University Research Initiative (W911NF1210594)
  • National Institute on Drug Abuse (R21DA034195)
  • National Eye Institute (R01EY011787)
  • National Institute of Neurological Disorders and Stroke (R21NS081393)
  • Army Research Office (W911NF-12-1-0594, W911NF)
  • Army Research Laboratory (W911NF-12-1-0594, W911NF)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
dendritic spines, synaptic plasticity, excitatory postsynaptic potentials, spike-timing-dependent plasticity, calcium imaging, glutamate uncaging, pyramidal neurons, neocortex, dendritic spine morphology, synaptic efficacy
MeSH terms
Animals, Dendrites, Female, Humans, Male, Neck, Synaptic Transmission, Spine, Synapses, Pyramidal Cells, Mice

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