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Vol. 248, Issue 1, January 2021, pp. 10-17




Modelling Spontaneous Ca2+ Oscillations Using a Digital Astrocyte System
Based on Single-Electron Transistors

1, * Beatriz O. CÂMARA and 2 Janaína G. GUIMARÃES

1 University of Brasilia, Electrical Engineering Department, P.O. Box 4368, Brasília, Brazil
2 Federal University of Santa Catarina, Department of Control Engineering, Automation and Computer Science,

Rua João Pessoa 2750, 89036-256, Velha, Blumenau, Brazil
E-mail: bia.camara@gmail.com


Received: 2 November 2020 /Accepted: 12 December 2020 /Published: 29 January 2021

Digital Sensors and Sensor Sysstems


Abstract: This work presents an improved version of a digital nanoelectronic astrocyte. This module simulates the spontaneous Ca2+ oscillations in the cytosol. Ca2+ oscillations are often initiated by stimuli from neighboring neurons, but they can also be triggered by small calcium ions flow from the external environment into the astrocyte’s cytosol. The hardware presented is a single-electron transistor-based model with a reduced footprint in relation to other digital astrocytes that implement the same model, and it generates the spontaneous oscillations without great loss of precision.


Keywords: Single-electron Transistor, Nanoelectronics, Neuromorphic Systems, Astrocyte, Neural Networks.


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