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New Burst-Oscillation Mode in Paced One-Dimensional Excitable Systems.
Zhao Lei1,2, Jiajing Liu1,2, Yaru Zhao1,2
1College of Physics and Optoelectronic Technology, Baoji University of Arts and Sciences, Baoji, China.
Frontiers in Physiology
|April 11, 2022
Summary
A novel burst-oscillation mode (BOM) was discovered in a 1D system. BOM transitions between spiking and long intervals, with its stability depending on initial conditions and system parameters.
Area of Science:
- Complex Systems Dynamics
- Nonlinear Physics
- Theoretical Neuroscience
Background:
- Excitable systems exhibit complex behaviors like oscillations and bursts.
- Understanding the dynamics of these systems is crucial for various scientific fields.
Purpose of the Study:
- To report the discovery of a new burst-oscillation mode (BOM).
- To investigate the dynamics, conditions, and mechanisms governing BOM in a 1D paced excitable system.
Main Methods:
- Extensive investigation of response dynamics in a 1D paced excitable system with unidirectional coupling.
- Identification of realizable and unrealizable regions for BOM evolution based on initial conditions.
- Theoretical prediction and numerical verification of dynamical features for BOM and spike-oscillation mode (SOM).
Main Results:
- A new burst-oscillation mode (BOM) characterized by alternating short spikes and long intervals was identified.
- The evolution of BOM depends on the initial pulse number, with distinct behaviors in realizable and unrealizable regions.
- BOM can evolve to homogeneous spike-oscillation mode (SOM) or be maintained, depending on system parameters.
- Key factors influencing BOM include linking time, system length, and local dynamics.
- Suitable external pacing parameters (A, f) for generating BOM were determined.
Conclusions:
- The study introduces and characterizes a novel burst-oscillation mode (BOM).
- The findings elucidate the conditions and mechanisms controlling BOM and its transition to SOM.
- This research provides insights into burst phenomena and has implications for related scientific fields.
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