A Conformal Fractional Derivative-based Leaky Integrate-and-Fire Neuron Model

Year 2022, Volume: 26 Issue: 3, 568 - 578, 30.06.2022

İsmail Devecioğlu , Reşat Mutlu

https://doi.org/10.16984/saufenbilder.1041088

Cited By: 1

Abstract

Neuron model have been extensively studied and different models have been proposed. Nobel laureate Hodgkin-Huxley model is physiologically relevant and can demonstrate different neural behaviors, but it is mathematically complex. For this reason, simplified neuron models such as integrate-and-fire model and its derivatives are more popular in the literature to study neural populations. Lapicque’s integrate-and-fire model is proposed in 1907 and its leaky integrate-and-fire version is very popular due to its simplicity. In order to improve this simple model and capture different aspects of neurons, a variety of it have been proposed. Fractional order derivative-based neuron models are one of those varieties, which can show adaptation without necessitating additional differential equations. However, fractional-order derivatives could be computationally costly. Recently, a conformal fractional derivative (CFD) is suggested in literature. It is easy to understand and implement compared to the other methods. In this study, a CFD-based leaky integrate-and-fire neuron model is proposed. The model captures the adaptation in firing rate under sustained current injection. Results suggest that it could be used to easily and efficiently implement network models as well as to model different sensory afferents.

Keywords

fractional order derivatives, conformal fractional derivative, leaky integrate-and-fire, neuron model

Thanks

We thank to editors and reviewers for their time and effort to evaluate our manuscript and for their valuable feedbacks.

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