Regensburg 2016 – scientific programme

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DS: Fachverband Dünne Schichten

DS 3: Phase Change / Resistive Switching

DS 3.3: Talk

Monday, March 7, 2016, 10:00–10:15, H8

Memristive circuits for the emulation of neuronal dynamics — •Marina Ignatov, Martin Ziegler, Mirko Hansen, Adrian Petraru, and Hermann Kohlstedt — AG Nanoelektronik, Christian-Albrechts-Universität zu Kiel, Germany

We discuss the capabilities of memristive devices for the emulation of neural dynamics in electronic circuits. Therefore, a memristive spiking neuron model is presented [1] which has been experimentally implemented in a compact electronic circuit comprising memristive and memcapacitive devices. In more detail, the strongly correlated electron material vanadium dioxide (VO₂) and a chemical electromigration cell Ag/TiO_2−x/Al have been employed to emulate neural spike coding, including firing frequency adaptation. The latter was first observed by E. D. Adrian in 1926 and is nowadays believed to be the basis of neural computing. Furthermore, the advantages of memristive oscillator systems for neural computing will be discussed. In this context, we present results on an electronic circuit which belongs to the class of van der Pol oscillators, which are considered as model systems to mimic higher brain functionalities.

Financial support by the German Research Foundation through FOR 2093 is gratefully acknowledged.

[1] M. Ignatov et al., Front. Neurosci. 9: 376 (2015)