Cited by 75Neural dynamics and brain functionNeuroscience and Neuropharmacology ResearchAdvanced Memory and Neural Computing

Somato-dendritic synaptic plasticity and error-backpropagation in active dendrites

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Schiess, Mathieu, Urbanczik, Robert, Senn, Walter·2016·PLoS Computational Biology

Abstract

In the last decade dendrites of cortical neurons have been shown to nonlinearly combine synaptic inputs by evoking local dendritic spikes. It has been suggested that these nonlinearities raise the computational power of a single neuron, making it comparable to a 2-layer network of point neurons. But how these nonlinearities can be incorporated into the synaptic plasticity to optimally support learning remains unclear. We present a theoretically derived synaptic plasticity rule for supervised and reinforcement learning that depends on the timing of the presynaptic, the dendritic and the postsynaptic spikes. For supervised learning, the rule can be seen as a biological version of the classical error-backpropagation algorithm applied to the dendritic case. When modulated by a delayed reward signal, the same plasticity is shown to maximize the expected reward in reinforcement learning for various coding scenarios. Our framework makes specific experimental predictions and highlights the unique advantage of active dendrites for implementing powerful synaptic plasticity rules that have access to downstream information via backpropagation of action potentials.

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  • Biological implementations of backpropagation based on the principle of neurons storing multiple variables have been proposed.

    “Thus, there is the possibility for a neuron to store both its activation itself, and the error derivative of a cost function with respect to its activation, as required in backpropagation, and biological implementations of backpropagation based on this principle have been proposed (Körding and König, 2001; Schiess et al., 2016)20.”

    From Toward an integration of deep learning and neuroscience (2016) · cites this paper as Schiess et al., 2016

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Authors
Schiess, M., Urbanczik, R., & Senn, W.
Affiliations
University of Bern (CH)
Corresponding author
  • Schiess, Mathieu
  • Urbanczik, Robert
  • Senn, Walter
Venue
PLoS Computational Biology
Published
2016-02-03
Volume
12
Issue
2
Pages
e1004638
ISSN
  • 1553-734X (ISSN-L)
  • 1553-7358
OpenAlex
W2265299158
Cited by
75
References
48
Citations by year
2026: 1 · 2025: 6 · 2024: 6 · 2023: 6 · 2022: 9 · 2021: 9 · 2020: 7 · 2019: 13 · 2018: 5 · 2017: 9 · 2016: 4
FWCI
6.58
Type
journal article
Language
en
Open access
Locations
  • PLoS Computational Biology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • BORIS (University Library Bern) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Open Access CRIS of the University of Bern
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Memory and Neural Computing
Keywords
dendritic spikes, active dendrites, synaptic plasticity, backpropagation, supervised learning, reinforcement learning, spike timing, delayed rewards, cortical neurons, dendritic computation, spike-timing-dependent plasticity
MeSH terms
Action Potentials, Algorithms, Dendrites, Models, Neurological, Neuronal Plasticity, Computational Biology

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