Modeling Active Non-Markovian Oscillations

G. Tucci, E. Roldán, A. Gambassi, R. Belousov, F. Berger, R. G. Alonso, A. J. Hudspeth

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Modeling noisy oscillations of active systems is one of the current challenges in physics and biology. Because the physical mechanisms of such processes are often difficult to identify, we propose a linear stochastic model driven by a non-Markovian bistable noise that is capable of generating self-sustained periodic oscillation. We derive analytical predictions for most relevant dynamical and thermodynamic properties of the model. This minimal model turns out to describe accurately bistablelike oscillatory motion of hair bundles in bullfrog sacculus, extracted from experimental data. Based on and in agreement with these data, we estimate the power required to sustain such active oscillations to be of the order of 100 kBT per oscillation cycle.

Original languageEnglish
Article number030603
Pages (from-to)1-7
Number of pages7
JournalPhysical Review Letters
Volume129
Issue number3
DOIs
Publication statusPublished - 15 Jul 2022

Bibliographical note

Funding Information:
R. G. A. was supported by Howard Hughes Medical Institute, of which A. J. H. is an Investigator. A. G. acknowledges support from MIUR PRIN project “Coarse-grained description for nonequilibrium systems and transport phenomena (CO-NEST)” Grant No. 201798CZL.

Publisher Copyright:
© 2022 American Physical Society.

Funding

R. G. A. was supported by Howard Hughes Medical Institute, of which A. J. H. is an Investigator. A. G. acknowledges support from MIUR PRIN project “Coarse-grained description for nonequilibrium systems and transport phenomena (CO-NEST)” Grant No. 201798CZL.

Keywords

  • Adaptation
  • Dynamics
  • Hair-cells
  • Telegraph noise
  • Transduction

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