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Sealable Femtoliter Chamber Arrays for Cell-free Biology

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Published on: March 11, 2015

Interaction of noise with excitable dynamics.

Gerardo J Escalera Santos¹, M Rivera, J Escalona

¹Facultad de Ciencias, UAEM, Avenida Universidad 1001, Colonia Chamilpa, C.P. 62209 Cuernavaca, Morelos, México.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences

|August 8, 2007

Summary

This study explores how noise affects electrochemical cell dynamics. Internal and external noise sources can both induce regular spiking behavior in excitable systems.

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Area of Science:

Electrochemistry
Nonlinear Dynamics
Stochastic Processes

Background:

Excitable dynamics in electrochemical systems are sensitive to noise.
Understanding noise interactions is crucial for controlling system behavior.
Electrochemical noise can arise from both external and internal sources.

Purpose of the Study:

To investigate the influence of external and internal noise on the dynamics of a three-electrode electrochemical cell.
To analyze stochastic resonance and noise-induced spiking behavior.
To examine the role of intrinsic electrochemical noise in autonomous nonlinear dynamics.

Main Methods:

Modeling a three-electrode electrochemical cell.
Introducing external noise sources and analyzing their effects.
Investigating internal electrochemical noise, modulated by chloride ion concentration.
Analyzing system responses to varying noise amplitudes.

Main Results:

External noise can lead to aperiodic stochastic resonance and regulated spiking.
Internal electrochemical noise, influenced by chloride ion concentration, also impacts system dynamics.
Increasing internal noise amplitude can induce regularity in the system's response.
Both external and internal noise exhibit similar capabilities in regularizing system output.

Conclusions:

Internal electrochemical noise plays a significant role in system dynamics, comparable to external noise.
Noise, both internal and external, can be harnessed to regularize the response of excitable electrochemical systems.
The concentration of chloride ions is a key factor in modulating intrinsic electrochemical noise and its effects.