Rashid Saima, Ali Ilyas, Sultana Sobia, Zia Zeemal, Elagan S K
Department of Mathematics, Government College University, Faisalabad 38000, Pakistan.
Department of Computer Science and Mathematics, Lebanese American University, 11022801, Beirut, Lebanon.
Heliyon. 2024 Nov 26;10(23):e40659. doi: 10.1016/j.heliyon.2024.e40659. eCollection 2024 Dec 15.
Using discrete fractional calculus, a wide variety of physiological phenomena with various time scales have been productively investigated. In order to comprehend the intricate dynamics and activity of neuronal processing, we investigate the behavior of a slow-fast FitzHugh-Rinzel (FH-R) simulation neuron that is driven by physiological considerations via the Caputo fractional difference scheme. Taking into account the discrete fractional commensurate and incommensurate mechanisms, we speculate on the numerical representations of various excitabilities and persistent activation reactions brought about by the administered stimulation. Furthermore, the outcomes concentrate on the variability of several time scales, encompassing mixed-mode oscillations and mixed-mode bursting oscillations formed by the canard occurrence. It is confirmed that the fast-analyzing component, which was isolated within this framework with the slow-fast evaluation process, is bistable, and the criterion for bistability is added as well. The architecture appears to be bistable based on this. The pertinent factors for examining time evolution, Poincaré maps, the bifurcation configuration of the system and chaos illustrations involve the inserted power stimulation using commensurate and incommensurate fractional-order values. We investigate the canards adjacent to the folded platforms using the folded node hypothesis. Additionally, we are employing mixed-mode oscillations to illustrate the homoclinic bifurcation and the resulting chaotic trajectory. Also, we determine our research results by computing the Lyapunov spectra as an expression of time in conjunction with the dominating factor ℑ to demonstrate the chaotic behavior in a particular domain. Besides that, we estimate intricacy employing the sample entropy (Sp-En) approach and complexity. The emergence of chaos within the hypothesized discrete fractional FH-R system is verified using the criterion. Ultimately, we examine the prospective implications of mixed-mode oscillations in neuroscience and draw the inference that our observed outcomes could potentially be of great relevance. As a result, the predicted intricacy decreases while applying it to non-horizontal significant models. Finally, the simulation's characteristic phases, canards and mixed model oscillations are achieved statistically with the assistance of varying fractional orders.
利用离散分数阶微积分,已经对各种时间尺度下的多种生理现象进行了富有成效的研究。为了理解神经元处理的复杂动力学和活动,我们通过卡普托分数阶差分格式研究了一个受生理因素驱动的快慢型菲茨休 - 林泽尔(FH - R)模拟神经元的行为。考虑到离散分数阶的 commensurate 和 incommensurate 机制,我们推测了由所施加刺激引起的各种兴奋性和持续激活反应的数值表示。此外,结果集中在几个时间尺度的变异性上,包括由鸭解发生形成的混合模式振荡和混合模式爆发振荡。证实了在这个框架内通过快慢评估过程分离出的快速分析组件是双稳的,并且还添加了双稳性的标准。基于此,该结构似乎是双稳的。用于检查时间演化、庞加莱映射、系统的分岔配置和混沌图示的相关因素涉及使用 commensurate 和 incommensurate 分数阶值插入的功率刺激。我们使用折叠节点假设研究与折叠平台相邻的鸭解。此外,我们利用混合模式振荡来说明同宿分岔和由此产生的混沌轨迹。而且,我们通过结合主导因子ℑ计算李雅普诺夫谱作为时间的表达式来确定我们的研究结果,以证明特定域中的混沌行为。除此之外,我们使用样本熵(Sp - En)方法估计复杂性。使用该标准验证了假设的离散分数阶 FH - R 系统内混沌的出现。最终,我们研究了混合模式振荡在神经科学中的潜在意义,并推断我们观察到的结果可能具有很大的相关性。结果,在将其应用于非水平显著模型时预测的复杂性降低。最后,借助不同的分数阶在统计上实现了模拟的特征阶段、鸭解和混合模型振荡。