Next Article in Journal
Method for Determining Starting Point of Rolling Bearing Life Prediction Based on Linear Regression
Previous Article in Journal
Extreme Learning Machines to Combat Phase Noise in RoF-OFDM Schemes
Previous Article in Special Issue
Remote-Controlled Fully Implantable Neural Stimulator for Freely Moving Small Animal
Open AccessArticle

Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators

Institute of Physics and Technology, Petrozavodsk State University, 31 Lenina str., Petrozavodsk 185910, Russia
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(9), 922; https://doi.org/10.3390/electronics8090922
Received: 8 July 2019 / Revised: 16 August 2019 / Accepted: 17 August 2019 / Published: 22 August 2019
(This article belongs to the Special Issue Smart Electrical Circuits and Systems for Neural Interface)
In this paper, we present circuit solutions based on a switch element with the S-type I–V characteristic implemented using the classic FitzHugh–Nagumo and FitzHugh–Rinzel models. Using the proposed simplified electrical circuits allows the modeling of the integrate-and-fire neuron and burst oscillation modes with the emulation of the mammalian cold receptor patterns. The circuits were studied using the experimental I–V characteristic of an NbO2 switch with a stable section of negative differential resistance (NDR) and a VO2 switch with an unstable NDR, considering the temperature dependences of the threshold characteristics. The results are relevant for modern neuroelectronics and have practical significance for the introduction of the neurodynamic models in circuit design and the brain–machine interface. The proposed systems of differential equations with the piecewise linear approximation of the S-type I–V characteristic may be of scientific interest for further analytical and numerical research and development of neural networks with artificial intelligence. View Full-Text
Keywords: neurocomputing; neural interface; FitzHugh–Nagumo model; FitzHugh–Rinzel model; bursting; S-type negative resistance; switching; vanadium dioxide neurocomputing; neural interface; FitzHugh–Nagumo model; FitzHugh–Rinzel model; bursting; S-type negative resistance; switching; vanadium dioxide
Show Figures

Graphical abstract

MDPI and ACS Style

Boriskov, P.; Velichko, A. Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators. Electronics 2019, 8, 922.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop