Cited by 100Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Differential Effects of Excitatory and Inhibitory Plasticity on Synaptically Driven Neuronal Input-Output Functions

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Carvalho, Tiago P., Buonomano, Dean V.·2009·Neuron

Abstract

Ultimately, whether or not a neuron produces a spike determines its contribution to local computations. In response to brief stimuli the probability a neuron will fire can be described by its input-output function, which depends on the net balance and timing of excitatory and inhibitory currents. While excitatory and inhibitory synapses are plastic, most studies examine plasticity of subthreshold events. Thus, the effects of concerted regulation of excitatory and inhibitory synaptic strength on neuronal input-output functions are not well understood. Here, theoretical analyses reveal that excitatory synaptic strength controls the threshold of the neuronal input-output function, while inhibitory plasticity alters the threshold and gain. Experimentally, changes in the balance of excitation and inhibition in CA1 pyramidal neurons also altered their input-output function as predicted by the model. These results support the existence of two functional modes of plasticity that can be used to optimize information processing: threshold and gain plasticity.

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Crossref · 10.1016/j.neuron.2009.01.013

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  • Balanced changes in excitatory and inhibitory synaptic plasticity may enhance the amplitude of membrane fluctuations to regulate the I/O gain of individual neurons.

    “Balanced changes in excitatory and inhibitory synaptic plasticity may further enhance the amplitude of membrane fluctuations to regulate the I/O gain of individual neurons76.”

    From Mechanisms underlying gain modulation in the cortex (2020) · cites this paper as [76]

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  1. Rumelhart DE McClelland JL University of California San Diego. PDP Research Group 1986 Parallel distributed processing: explorations in the microstructure of cognition Cambridge, Mass. MIT Press

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Authors
Carvalho, T. P., & Buonomano, D. V.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Buonomano, Dean V.
Venue
Neuron
Publisher
Elsevier BV
Published
2009-03
Volume
61
Issue
5
Pages
774-785
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2098864351
Cited by
100
References
84
Citations by year
2026: 3 · 2025: 3 · 2024: 3 · 2023: 7 · 2022: 7 · 2021: 5 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 6 · 2016: 4 · 2015: 6 · 2014: 8 · 2013: 5 · 2012: 4
FWCI
3.59
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH-60163, R01MH060163)
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
synaptic plasticity, inhibitory plasticity, excitation-inhibition balance, CA1 pyramidal neurons, action potential generation, information processing
MeSH terms
Animals, Animals, Newborn, Computer Simulation, Electric Stimulation, Hippocampus, Models, Neurological, Neuronal Plasticity, Neurons, Synapses, Rats, Sprague-Dawley, Patch-Clamp Techniques, Excitatory Postsynaptic Potentials, Rats, Inhibitory Postsynaptic Potentials, Biophysical Phenomena, In Vitro Techniques

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