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Synaptic and Temporal Ensemble Interpretation of Spike Timing Dependent Plasticity

Synaptic and Temporal Ensemble Interpretation of Spike Timing Dependent Plasticity
Synaptic and Temporal Ensemble Interpretation of Spike Timing Dependent Plasticity
We postulate that a simple, three-state synaptic switch governs changes in synaptic strength at individual synapses. Under this switch rule, we show that a variety of experimental results on timing-dependent plasticity can emerge from temporal and spatial averaging over multiple synapses and multiple spike pairings. In particular, we show that a critical window for the interaction of pre- and postsynaptic spikes emerges as an ensemble property of the collective system, with individual synapses exhibiting only a minimal form of spike coincidence detection. In addition, we show that a Bienenstock-Cooper-Munro-like, rate-based plasticity rule emerges directly from such a model. This demonstrates that two, apparently separate, forms of neuronal plasticity can emerge from a much simpler rule governing the plasticity of individual synapses.
2316-2336
Appleby, Peter
98b8b676-f0a6-4451-ab48-c0358730b529
Elliott, Terry
b4262f0d-c295-4ea4-b5d8-3931470952f9
Appleby, Peter
98b8b676-f0a6-4451-ab48-c0358730b529
Elliott, Terry
b4262f0d-c295-4ea4-b5d8-3931470952f9

Appleby, Peter and Elliott, Terry (2005) Synaptic and Temporal Ensemble Interpretation of Spike Timing Dependent Plasticity. Neural Computation, 2005, 2316-2336.

Record type: Article

Abstract

We postulate that a simple, three-state synaptic switch governs changes in synaptic strength at individual synapses. Under this switch rule, we show that a variety of experimental results on timing-dependent plasticity can emerge from temporal and spatial averaging over multiple synapses and multiple spike pairings. In particular, we show that a critical window for the interaction of pre- and postsynaptic spikes emerges as an ensemble property of the collective system, with individual synapses exhibiting only a minimal form of spike coincidence detection. In addition, we show that a Bienenstock-Cooper-Munro-like, rate-based plasticity rule emerges directly from such a model. This demonstrates that two, apparently separate, forms of neuronal plasticity can emerge from a much simpler rule governing the plasticity of individual synapses.

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Published date: 2005
Organisations: Web & Internet Science

Identifiers

Local EPrints ID: 262115
URI: https://eprints.soton.ac.uk/id/eprint/262115
PURE UUID: ab3667ec-b3ea-483e-a052-817d541d1aa0

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Date deposited: 23 Mar 2006
Last modified: 25 Nov 2019 21:05

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Contributors

Author: Peter Appleby
Author: Terry Elliott

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