Analysis of passive charge balancing for safe current-mode neural stimulation

Charge balancing has been often considered as one of the most critical requirement for neural stimulation circuits. Over the years several solutions have been proposed to precisely balance the charge transferred to the tissue during anodic and cathodic phases. Elaborate dynamic current sources/sinks...

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Bibliographic Details
Published in2017 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 1 - 4
Main Authors Rueda, G. Luis E., Ballini, Marco, Van Hellepute, Nick, Mitra, Srinjoy
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2017
Subjects
Capacitors
charge balance
Discharges (electric)
Electrodes
Mathematical model
Neural stimulation
Probes
Radio frequency
Resistance
safety limits
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Summary:Charge balancing has been often considered as one of the most critical requirement for neural stimulation circuits. Over the years several solutions have been proposed to precisely balance the charge transferred to the tissue during anodic and cathodic phases. Elaborate dynamic current sources/sinks with improved matching, and feedback loops have been proposed with a penalty on circuit complexity, area or power consumption. Here we review the dominant assumptions in safe stimulation protocols, and derive mathematical models to determine the effectiveness of passive charge balancing in a typical application scenario.
ISSN:2379-447X
DOI:10.1109/ISCAS.2017.8050621