Scientific Results

Spiking control by means of “phase feedback” in FitzHugh-Nagumo circuits

Year: 2012

Authors: Meucci R., Euzzor S., Geltrude, A., Al-Naimee K., De Nicola S., Arecchi F.T.

Autors Affiliation: Istituto Nazionale di Ottica, CNR, Largo E. Fermi 6, 50125 Firenze, Italy;
Dept. of Physics, College of Science, University of Baghdad, Baghdad, Iraq;
INFN, Sezione di Napoli, Napoli, Italy;
Dipartimento di Fisica, Università di Firenze, 50019 Sesto Fiorentino, Italy

Abstract: We investigate the feedback control of a periodically driven FitzHugh-Nagumo circuit (FHN), which displays both spiking and non-spiking behaviors in chaotic or periodic regimes. The simple high pass filter (washout filter) is compared with an all pass filter which only affects the phase characteristics of the input signal. Experimental measurements performed on the electronic implementation of the FHN are in good agreement with numerical simulations. Apart a small difference in their amplitude corrections that remain in both cases within a few percent with respect to the unperturbed spiking signal, we prove the key role of the phase characteristics of the two filters in achieving control. (C) 2012 Elsevier B.V. All rights reserved.

Journal/Review: PHYSICS LETTERS A

Volume: 376 (6-7)      Pages from: 834  to: 838

More Information: The authors acknowledge Ente Cassa di Risparmio di Firenze for financial support.
KeyWords: Mixed-mode oscillations; Chaos; Bifurcation; Dynamics; System
DOI: 10.1016/j.physleta.2012.01.011

Citations: 5
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