From Event: SPIE Organic Photonics + Electronics, 2017
Recent studies have found that responses to electrical stimulations in organic semiconductors and/or electrolytes heterogeneous junctions possess features in common with neural synaptic plasticity. Thus, we explore spatial summation of short-term plasticity by using a pair of such junctions. A simple integration of parallel connection displayed frequency selectivity in the weight modification of charging peaks but not for discharging peaks. Significantly, the weight modification could be linearly summed from those of the two source devices though the absolute peak currents could not. Our system is feasible for synaptic computation including spatial summation and direction selectivity in artificial neural network.
Fei Zeng, "Spatial summation of pulse responses of a pair of organic heterogeneous junctions (Conference Presentation)," Proc. SPIE 10366, Hybrid Memory Devices and Printed Circuits 2017, 1036605 (Presented at SPIE Organic Photonics + Electronics: August 10, 2017; Published: 19 September 2017); https://doi.org/10.1117/12.2272847.5581151901001.
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