Implantable Organic Artificial Synapses Exhibiting Crossover between Depressive and Facilitative Plasticity Response

Organic neuromorphic devices mimic signal processing features of biological synapses, with short-term plasticity, STP, modulated by the frequency input voltage pulses. Here, an artificial synapse, made intracortical microelectrodes, is demonstrated that exhibits either depressive or facilitative STP. The crossover between two STP regimes controlled voltage. are described equivalent circuit where inductance component introduced in parallel RC associated poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT/PSS)||electrolyte interface. proposed RLC explains physical origin observed and its timescales terms charge build up PEDOT/PSS.