scholarly journals Unbalanced clustering and solitary states in coupled excitable systems

2022 ◽  
Vol 32 (1) ◽  
pp. 011104
Author(s):  
Igor Franović ◽  
Sebastian Eydam ◽  
Nadezhda Semenova ◽  
Anna Zakharova
Keyword(s):  
Excitable Systems

Fluorescent potentiometric dyes for membrane-potential imaging

1994 ◽  
Vol 52 ◽  
pp. 166-167
Author(s):  
Leslie M. Loew
Keyword(s):  
Membrane Potential ◽  
Single Cells ◽  
Quantitative Imaging ◽  
Optical Recording ◽  
Biological Processes ◽  
Major Focus ◽  
The Past ◽  
Excitable Systems ◽  
Major Application ◽  
The Impact

A major application of potentiometric dyes has been the multisite optical recording of electrical activity in excitable systems. After being championed by L.B. Cohen and his colleagues for the past 20 years, the impact of this technology is rapidly being felt and is spreading to an increasing number of neuroscience laboratories. A second class of experiments involves using dyes to image membrane potential distributions in single cells by digital imaging microscopy - a major focus of this lab. These studies usually do not require the temporal resolution of multisite optical recording, being primarily focussed on slow cell biological processes, and therefore can achieve much higher spatial resolution. We have developed 2 methods for quantitative imaging of membrane potential. One method uses dual wavelength imaging of membrane-staining dyes and the other uses quantitative 3D imaging of a fluorescent lipophilic cation; the dyes used in each case were synthesized for this purpose in this laboratory.

An analytical scheme on complete integrability of 2D biophysical excitable systems

2021 ◽  
pp. 125924
Author(s):  
Argha Mondal ◽  
Kshitish Ch. Mistri ◽  
M.A. Aziz-Alaoui ◽  
Ranjit Kumar Upadhyay
Keyword(s):  
Complete Integrability ◽  
Analytical Scheme ◽  
Excitable Systems

scholarly journals Optimal control of excitable systems near criticality

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Kathleen Finlinson ◽  
Woodrow L. Shew ◽  
Daniel B. Larremore ◽  
Juan G. Restrepo
Keyword(s):  
Optimal Control ◽  
Excitable Systems

scholarly journals Dynamics of FitzHugh-Nagumo excitable systems with delayed coupling

2003 ◽  
Vol 67 (6) ◽  
Author(s):  
Nikola Burić ◽  
Dragana Todorović
Keyword(s):  
Delayed Coupling ◽  
Excitable Systems

Type I vs. type II excitable systems with delayed coupling

2005 ◽  
Vol 23 (4) ◽  
pp. 1221-1233 ◽  
Author(s):  
Nikola Burić ◽  
Ines Grozdanović ◽  
Nebojša Vasović
Keyword(s):  
Type I ◽  
Type Ii ◽  
Delayed Coupling ◽  
Excitable Systems

SUPPRESSION OF JAMMING IN EXCITABLE SYSTEMS BY APERIODIC STOCHASTIC RESONANCE

2004 ◽  
Vol 14 (10) ◽  
pp. 3519-3539 ◽  
Author(s):  
YING-CHENG LAI ◽  
ZONGHUA LIU ◽  
ARJE NACHMAN ◽  
LIQIANG ZHU
Keyword(s):  
Dynamical Systems ◽  
Stochastic Resonance ◽  
Narrow Band ◽  
Broad Band ◽  
Effective Mechanism ◽  
Strong Broad Band ◽  
Chaotic Signals ◽  
Input Signals ◽  
Excitable Systems ◽  
Processing Information

To suppress undesirable noise (jamming) associated with signals is important for many applications. Here we explore the idea of jamming suppression with realistic, aperiodic signals by stochastic resonance. In particular, we consider weak amplitude-modulated (AM), frequency-modulated (FM), and chaotic signals with strong, broad-band or narrow-band jamming, and show that aperiodic stochastic resonance occurring in an array of excitable dynamical systems can be effective to counter jamming. We provide formulas for quantitative measures characterizing the resonance. As excitability is ubiquitous in biological systems, our work suggests that aperiodic stochastic resonance may be a universal and effective mechanism for reducing noise associated with input signals for transmitting and processing information.

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