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

Complex Events Initiated by Individual Spikes in the Human Cerebral Cortex

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Molnár, Gábor, Oláh, Szabolcs, Komlósi, Gergely, Füle, Miklós, Szabadics, János, Varga, Csaba, Barzó, Pál, Tamás, Gábor·2008·PLoS Biology

Abstract

Synaptic interactions between neurons of the human cerebral cortex were not directly studied to date. We recorded the first dataset, to our knowledge, on the synaptic effect of identified human pyramidal cells on various types of postsynaptic neurons and reveal complex events triggered by individual action potentials in the human neocortical network. Brain slices were prepared from nonpathological samples of cortex that had to be removed for the surgical treatment of brain areas beneath association cortices of 58 patients aged 18 to 73 y. Simultaneous triple and quadruple whole-cell patch clamp recordings were performed testing mono- and polysynaptic potentials in target neurons following a single action potential fired by layer 2/3 pyramidal cells, and the temporal structure of events and underlying mechanisms were analyzed. In addition to monosynaptic postsynaptic potentials, individual action potentials in presynaptic pyramidal cells initiated long-lasting (37 +/- 17 ms) sequences of events in the network lasting an order of magnitude longer than detected previously in other species. These event series were composed of specifically alternating glutamatergic and GABAergic postsynaptic potentials and required selective spike-to-spike coupling from pyramidal cells to GABAergic interneurons producing concomitant inhibitory as well as excitatory feed-forward action of GABA. Single action potentials of human neurons are sufficient to recruit Hebbian-like neuronal assemblies that are proposed to participate in cognitive processes.

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Crossref · 10.1371/journal.pbio.0060222

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Research works printed but not linked: 3

  1. Markram H Lubke J Frotscher M Sakmann B 1997 Regulation of synaptic efficacy by coincidence of postsynaptic APs and EPSPs Science 275 213 215 8985014
  2. Somogyi P Tamas G Lujan R Buhl EH 1998 Salient features of synaptic organisation in the cerebral cortex Brain Res Rev 26 113 135 9651498
  3. Abeles M 1991 Corticonics: neural circuits of the cerebral cortex Cambridge Cambridge University Press 208 227

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Authors
Molnár, G., Oláh, S., Komlósi, G., Füle, M., Szabadics, J., Varga, C., Barzó, P., & Tamás, G.
Affiliations
University of Szeged (HU)
Corresponding author
Tamás, Gábor
Venue
PLoS Biology
Published
2008-09-02
Volume
6
Issue
9
Pages
e222
ISSN
  • 1544-9173 (ISSN-L)
  • 1545-7885
OpenAlex
W2110519400
Cited by
197
References
43
Citations by year
2026: 12 · 2025: 9 · 2024: 12 · 2023: 22 · 2022: 17 · 2021: 9 · 2020: 13 · 2019: 7 · 2018: 9 · 2017: 9 · 2016: 10 · 2015: 9 · 2014: 10 · 2013: 6 · 2012: 9
FWCI
5.05
Type
journal article
Language
en
Open access
Locations
  • PLoS Biology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Howard Hughes Medical Institute
  • Boehringer Ingelheim Fonds
  • Hungarian Scientific Research Fund
  • Magyar Tudományos Akadémia
  • Nemzeti Kutatási és Technológiai Hivatal
  • National Institutes of Health
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
human cerebral cortex, layer 2/3 pyramidal cells, synaptic interactions, GABAergic interneurons, glutamatergic synapses, feedforward inhibition
MeSH terms
Action Potentials, Adolescent, Adult, Aged, Cerebral Cortex, gamma-Aminobutyric Acid, Humans, Middle Aged, Nerve Net, Synapses, Pyramidal Cells, Patch-Clamp Techniques, Glutamic Acid, Excitatory Postsynaptic Potentials

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