Fig. 6: Noise-induced activity.
From: Unravelling the operation of organic artificial neurons for neuromorphic bioelectronics
White noise signal with amplitude \({V}_{{{{{{\rm{pp}}}}}}}\) is injected into the electrolyte. a, c, e Spiking current \({I}_{{{{{{\rm{spike}}}}}}}\) as a function of time at various amplitudes (\({V}_{{{{{{\rm{pp}}}}}}}\)) of noise signal injected into the electrolyte. b, d, f Impact of the noise on the current-voltage characteristics \({I}_{{{{{{\rm{OEND}}}}}}}\left({V}_{{{{{{\rm{OEND}}}}}}}\right)\) of the OEND (blue full line) and load-line (dashed line) calculated with numerical simulations. The noise modulates the position of the load line as a function of time (shade area) and elicits interrupted spikes. a, b \({V}_{{{{{{\rm{pp}}}}}}}\) = 25 mV, c, d \({V}_{{{{{{\rm{pp}}}}}}}\) = 50 mV, and e, f \({V}_{{{{{{\rm{pp}}}}}}}\) = 150 mV. Random packets of spikes are triggered by noise.
