AUTHOR=Feng Peihua , Wu Ying , Zhang Jiazhong TITLE=A Route to Chaotic Behavior of Single Neuron Exposed to External Electromagnetic Radiation JOURNAL=Frontiers in Computational Neuroscience VOLUME=11 YEAR=2017 URL=https://www.frontiersin.org/journals/computational-neuroscience/articles/10.3389/fncom.2017.00094 DOI=10.3389/fncom.2017.00094 ISSN=1662-5188 ABSTRACT=

Non-linear behaviors of a single neuron described by Fitzhugh-Nagumo (FHN) neuron model, with external electromagnetic radiation considered, is investigated. It is discovered that with external electromagnetic radiation in form of a cosine function, the mode selection of membrane potential occurs among periodic, quasi-periodic, and chaotic motions as increasing the frequency of external transmembrane current, which is selected as a sinusoidal function. When the frequency is small or large enough, periodic, and quasi-periodic motions are captured alternatively. Otherwise, when frequency is in interval 0.778 < ω < 2.208, chaotic motion characterizes the main behavior type. The mechanism of mode transition from quasi-periodic to chaotic motion is also observed when varying the amplitude of external electromagnetic radiation. The frequency apparently plays a more important role in determining the system behavior.