Cited by 1,092Neural dynamics and brain functionNeural Networks and ApplicationsMemory and Neural Mechanisms

Generating Coherent Patterns of Activity from Chaotic Neural Networks

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Sussillo, David, Abbott, L.F.·2009·Neuron

Abstract

Neural circuits display complex activity patterns both spontaneously and when responding to a stimulus or generating a motor output. How are these two forms of activity related? We develop a procedure called FORCE learning for modifying synaptic strengths either external to or within a model neural network to change chaotic spontaneous activity into a wide variety of desired activity patterns. FORCE learning works even though the networks we train are spontaneously chaotic and we leave feedback loops intact and unclamped during learning. Using this approach, we construct networks that produce a wide variety of complex output patterns, input-output transformations that require memory, multiple outputs that can be switched by control inputs, and motor patterns matching human motion capture data. Our results reproduce data on premovement activity in motor and premotor cortex, and suggest that synaptic plasticity may be a more rapid and powerful modulator of network activity than generally appreciated.

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Crossref · 10.1016/j.neuron.2009.07.018

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  • A recurrent neural network is difficult to train and control because it may exhibit chaotic behavior.

    “A recurrent neural network is also known to be difficult to train and control because it may exhibit chaotic behavior (Sompolinsky et al., 1988; Sussillo and Abbott, 2009; Laje and Buonomano, 2013; Ben-Shushan and Tsodyks, 2017).”

    From The Cerebro-Cerebellum as a Locus of Forward Model: A Review (2020) · cites this paper as Sussillo and Abbott, 2009

  • The FORCE learning algorithm generates stable patterns of activity in a recurrent neural network by adding feedback connections from the output unit to recurrent units.

    “In line with our proposal, the FORCE learning algorithm generates stable patterns of activity in a recurrent neural network by adding feedback connections from the output unit to recurrent units (Sussillo and Abbott, 2009).”

    From The Cerebro-Cerebellum as a Locus of Forward Model: A Review (2020) · cites this paper as Sussillo and Abbott, 2009

  • The search for biologically plausible forms of backpropagation has already led to insights such as random feedback weights (feedback alignment) and the unexpected power of internal FORCE learning in chaotic, spontaneously active recurrent networks.

    “Moreover, the search for biologically plausible forms of backpropagation has already led to interesting insights, such as the possibility of using random feedback weights (feedback alignment) in backpropagation (Lillicrap et al., 2014), or the unexpected power of internal FORCE learning in chaotic, spontaneously active recurrent networks (Sussillo and Abbott, 2009).”

    From Toward an integration of deep learning and neuroscience (2016) · cites this paper as Sussillo and Abbott, 2009

  • A randomly connected circuit model, akin to a 'reservoir' network, can reproduce the observed distribution of timescales, provided that the network operates at the critical point (or 'edge of chaos').

    “Finally, we show that a randomly connected circuit model, akin to a “reservoir” network13-15, can reproduce the observed distribution of timescales, provided that the network operates at the critical point (or “edge of chaos”)16-18.”

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Research works printed but not linked: 2

  1. Rumelhart DE McClelland JL Parallel Distributed Processing: Explorations in the Microstructure of Cognition. Vol. 1, Foundations 1986 MIT Press Cambridge MA
  2. Sussillo D Learning in chaotic recurrent networks Columbia University Ph.D. Thesis 2009 93 102

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Authors
Sussillo, D., & Abbott, L. F.
Affiliations
Columbia University Irving Medical Center (US)
Corresponding author
  • Sussillo, David
  • Abbott, L.F.
Venue
Neuron
Publisher
Elsevier BV
Published
2009-08
Volume
63
Issue
4
Pages
544-557
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2099231026
Cited by
1,092
References
35
Citations by year
2026: 76 · 2025: 81 · 2024: 104 · 2023: 89 · 2022: 74 · 2021: 111 · 2020: 92 · 2019: 99 · 2018: 64 · 2017: 64 · 2016: 66 · 2015: 47 · 2014: 33 · 2013: 29 · 2012: 28
FWCI
10.05
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5-DP1-OD114-02)
  • National Institute of Mental Health (MH-58754)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
chaotic neural networks, spontaneous neuronal activity, synaptic plasticity, motor patterns, premotor cortex, motor cortex, feedback loops
MeSH terms
Action Potentials, Humans, Neuronal Plasticity, Neural Networks, Computer, Nonlinear Dynamics, Feedback, Physiological

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