Chirped modulated wave excitations in an electrical model of microtubules

Emmanuel Kengne and Ahmed Lakhssassi

Chaos, Solitons & Fractals, 2023, vol. 167, issue C

Abstract: Inspired by standard electrophysiological models of microtubules (MTs), we consider a relatively large one-dimensional spatial array of nonlinear electrical transmission network with a negative nonlinear resistance. Employing the reductive perturbation approach in the semi-discrete approximation, we show that the evolution of ionic waves in this electrical circuit model of microtubules is described by a nonlinear Schrödinger (NLS) equation with a dissipative/amplification term in the presence of an external linear potential. The modulational instability analysis of the amplitude equation shows that the derived NLS equation suitably describes the dynamics of our lattice of biochemical units as an excitable medium. Based on exact and approximate solutions of the amplitude equation, we investigate analytically the existence of modulated chirped solitonic waves along microtubules. We suggest possible biological implications of these nonlinear modulated waves. Our system is found to amplify significantly the amplitude of the input signal, confirming thus known experimental results on MTs. Nevertheless, a proper choice of various parameters of the negative nonlinear resistance is required for further validation of our theoretical results.

Keywords: Microtubules; Modulational instability; Chirped soliton; Approximate soliton solution; Nonlinear Schrödinger equation (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960077922012735
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:167:y:2023:i:c:s0960077922012735

DOI: 10.1016/j.chaos.2022.113094

Access Statistics for this article

Chaos, Solitons & Fractals is currently edited by Stefano Boccaletti and Stelios Bekiros

More articles in Chaos, Solitons & Fractals from Elsevier
Bibliographic data for series maintained by Thayer, Thomas R. ().