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Analogy circuit synthesis and dynamics confirmation of a bipolar pulse current-forced 2D Wilson neuron model
The European Physical Journal Special Topics ( IF 2.6 ) Pub Date : 2021-06-05 , DOI: 10.1140/epjs/s11734-021-00183-0
Quan Xu , Zhutao Ju , Chengtao Feng , Huagan Wu , Mo Chen

Neurons can exhibit abundant electrical activities in response to various externally applied stimuli, which can lay the groundwork for widening their use in neuron-based engineering applications. This paper presents the dynamical behaviors and analogy circuit-based confirmations in a bipolar pulse (BP) current-forced two-dimensional (2D) Wilson neuron model. Due to the existence of BP current, the proposed 2D neuron model has periodically switchable equilibrium states. The BP current-associated dynamical behaviors, including subthreshold oscillation (STO), periodic limit cycle, chaos, and antimonotonicity phenomenon, are numerically revealed by common dynamical analyses. Note that the electrical activity behaves a close dependence on the frequency of the externally applied BP current. Thereafter, an analog circuit is optimally synthesized to implement the 2D Wilson neuron model by utilizing the off-the-shelf discrete components, upon which the Multisim 12.0-based circuit simulations and hardware experiments are executed. It is revealed that the circuit-simulated and experimentally captured results well confirm the numerically simulated ones.



中文翻译:

双极脉冲电流强制二维威尔逊神经元模型的类比电路合成和动力学确认

神经元可以响应各种外部施加的刺激而表现出丰富的电活动,这可以为扩大它们在基于神经元的工程应用中的应用奠定基础。本文介绍了双极脉冲 (BP) 电流强制二维 (2D) 威尔逊神经元模型中的动力学行为和基于模拟电路的确认。由于BP电流的存在,所提出的二维神经元模型具有周期性可切换的平衡状态。BP 电流相关的动力学行为,包括亚阈值振荡 (STO)、周期性极限循环、混沌和反单调现象,通过常见的动力学分析在数值上得到揭示。请注意,电活动的行为与外部施加的 BP 电流的频率密切相关。此后,通过利用现成的分立元件优化合成模拟电路以实现 2D 威尔逊神经元模型,在此基础上执行基于 Multisim 12.0 的电路模拟和硬件实验。结果表明,电路模拟和实验捕获的结果很好地证实了数值模拟的结果。

更新日期:2021-06-05
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