Stochastic Memristive Interface for Neural Signal Processing.

Journal: Sensors (Basel, Switzerland)
Published Date: Aug 19, 2021

Abstract

We propose a memristive interface consisting of two FitzHugh-Nagumo electronic neurons connected via a metal-oxide (Au/Zr/ZrO(Y)/TiN/Ti) memristive synaptic device. We create a hardware-software complex based on a commercial data acquisition system, which records a signal generated by a presynaptic electronic neuron and transmits it to a postsynaptic neuron through the memristive device. We demonstrate, numerically and experimentally, complex dynamics, including chaos and different types of neural synchronization. The main advantages of our system over similar devices are its simplicity and real-time performance. A change in the amplitude of the presynaptic neurogenerator leads to the potentiation of the memristive device due to the self-tuning of its parameters. This provides an adaptive modulation of the postsynaptic neuron output. The developed memristive interface, due to its stochastic nature, simulates a real synaptic connection, which is very promising for neuroprosthetic applications.

Authors

  • Svetlana A Gerasimova
    Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Alexey I Belov
    Research Institute and Technology, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Dmitry S Korolev
    Research Institute and Technology, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Davud V Guseinov
    Research Institute and Technology, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Albina V Lebedeva
    Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Maria N Koryazhkina
    Research and Educational Center "Physics of Solid State Nanostructures", National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Alexey N Mikhaylov
    Research Institute and Technology, National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Victor B Kazantsev
    Neurotechnology Department, Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
  • Alexander N Pisarchik
    Artificial Intelligence Systems and Neurotechnologies, Yuri Gagarin State Technical University of Saratov, Politehnicheskaya, 77, Saratov 410054, Russia.

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