Emergence of Slow Collective Oscillations in Neural Networks with Spike-Timing Dependent Plasticity

Kaare Mikkelsen, Alberto Imparato, and Alessandro Torcini
Phys. Rev. Lett. 110, 208101 – Published 13 May 2013
PDFHTMLExport Citation

Abstract

The collective dynamics of excitatory pulse coupled neurons with spike-timing dependent plasticity is studied. The introduction of spike-timing dependent plasticity induces persistent irregular oscillations between strongly and weakly synchronized states, reminiscent of brain activity during slow-wave sleep. We explain the oscillations by a mechanism, the Sisyphus Effect, caused by a continuous feedback between the synaptic adjustments and the coherence in the neural firing. Due to this effect, the synaptic weights have oscillating equilibrium values, and this prevents the system from relaxing into a stationary macroscopic state.

  • Received 1 February 2013

DOI:https://doi.org/10.1103/PhysRevLett.110.208101

© 2013 American Physical Society

Authors & Affiliations

Kaare Mikkelsen1,*, Alberto Imparato1,†, and Alessandro Torcini2,3,1,‡

  • 1Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, Building 1520, DK-8000 Aarhus C, Denmark
  • 2CNR-Consiglio Nazionale delle Ricerche-Istituto dei Sistemi Complessi, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
  • 3INFN Sezione di Firenze, via Sansone, 1-I-50019 Sesto Fiorentino, Italy

  • *kbm05@phys.au.dk
  • imparato@phys.au.dk
  • alessandro.torcini@cnr.it

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 110, Iss. 20 — 17 May 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×