Encyclopedia of Computational Neuroscience

Living Edition
| Editors: Dieter Jaeger, Ranu Jung

Delay-Induced Transient Oscillation (DITO) and Metastable Behavior

  • Clodoaldo Grotta-Ragazzo
  • Coraci P. MaltaEmail author
  • Khashayar Pakdaman
Living reference work entry
DOI: https://doi.org/10.1007/978-1-4614-7320-6_100678-1

Definition

Delay-induced transient oscillations (DITOs) are oscillations that occur in bi- or multi-stable system of delayed differential equations as it converges to one of its stable equilibria, oscillations that do not exist when the delay vanishes.

Metastable oscillations are transient oscillatory patterns (or states) that attract neighboring initial conditions and last for a “long time” almost without change. These oscillatory patterns seem to be stable: to detect their instability, it is necessary to observe the system over a seemingly endless time window. Such long-lasting transients would be undistinguishable from (nearly) periodic solutions. A mathematical definition of metastability needs a quantification of “long time”. The most common approach is to consider a one-parameter family of systems and to compare the transient time duration for different values of the parameter. For instance, if ε >0 is a real parameter, then an oscillatory pattern is said to be metastable if...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Clodoaldo Grotta-Ragazzo
    • 1
  • Coraci P. Malta
    • 2
    Email author
  • Khashayar Pakdaman
    • 3
  1. 1.Instituto de Matemática e Estatística, Universidade de São PauloSão PauloBrazil
  2. 2.Instituto de Física, Universidade de São PauloSão PauloBrazil
  3. 3.Institut Jacques Monod, Univ Paris DiderotParisFrance

Section editors and affiliations

  • John Milton
    • 1
  1. 1.W.M. Keck Science CenterThe Claremont CollegesClaremontUSA