Back to Search Start Over

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

Authors :
Calandra Sebastianella, Gioacchino
Di Lauro, Michele
Murgia, Mauro
Bianchi, Michele
Carli, Stefano
Zoli, Michele
Fadiga, Luciano
Biscarini, Fabio
Source :
Advanced Electronic Materials; Dec2021, Vol. 7 Issue 12, p1-8, 8p
Publication Year :
2021

Abstract

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

Details

Language :
English
ISSN :
2199160X
Volume :
7
Issue :
12
Database :
Complementary Index
Journal :
Advanced Electronic Materials
Publication Type :
Academic Journal
Accession number :
154046352
Full Text :
https://doi.org/10.1002/aelm.202100755