Configurable Neuronal Tuning Curves in NbOx Mott Memristors

Neuronal tuning curves are the important characteristics of sensory neurons for encoding stimulus variables. However, it is challenging to achieve configurable neuronal tuning curves with nanoscale neuron devices. In this brief, we successfully demonstrate biomimetic neuronal tuning curves with NbO_x Mott memristor by virtue of its electrically configurable spiking behaviors. The NbO_x Mott neuron not only realizes probabilistic spiking but also exhibits configurable Gaussian spiking distribution. This enables the emulation of the key features of biological tuning curves, feasible for hardware implementation of artificial sensory neural network with high biological fidelity.