Fig. 4: Artificial spiking afferent nerve (ASAN) with an external capacitor.
From: An artificial spiking afferent nerve based on Mott memristors for neurorobotics
a Schematic of the ASAN with an external parallel capacitor (4.7 nF). b Frequency response with different input voltages. c The frequency–voltage curve with two stages: excitatory spiking stage under low input voltages and protective inhibition stage under high voltages. d–f The frequency response with a sinusoidal signal as input. d, f The input signals only with positive voltage, protective inhibition can be observed in f which has a higher amplitude. e An input sinusoidal signal without bias, where the oscillation behavior can be obtained upon applications of both positive and negative voltage.
