Title :
Electrode-gel-skin interface characterization and modeling for surface biopotential recording: Impedance measurements and noise
Author :
Saadi, Hyem ; Attari, Mokhtar
Author_Institution :
Lab. of Instrum. (LINS), USTHB, Algiers, Algeria
Abstract :
In this work, electrical impedance spectroscopy (EIS) has been used to characterize the electrical properties of the electrode-electrolyte interface and the electrode-skin interface. The impedance was measured from face to face Ag/AgCl electrode pairs, as well as the impedance of Ag/AgCl electrodes placed on the human body surface, in the frequency band from 0.05Hz to 1MHz. The obtained frequency responses of each interface were analyzed to determine their electrical models, with parameterization of the described impedance models using an optimization program written in Matlab source software. The thermal noises were also calculated for both interfaces.
Keywords :
bioelectric potentials; biomedical electrodes; biomedical measurement; electric impedance measurement; electrolytes; skin; surface potential; thermal noise; Matlab source software; electrical impedance spectroscopy; electrical models; electrical properties; electrode-electrolyte interface; electrode-gel-skin interface characterization; frequency 0.05 Hz to 1 MHz; human body surface; impedance measurements; optimization program; surface biopotential recording; thermal noise; Biomedical measurement; Electrodes; Face; Impedance; Impedance measurement; Integrated circuit modeling; Noise; Electrode modeling; Electrode noise; Impedance measurement; Impedance spectroscopy; Skin-Electrode interface;
Conference_Titel :
Advances in Biomedical Engineering (ICABME), 2013 2nd International Conference on
Conference_Location :
Tripoli
Print_ISBN :
978-1-4799-0249-1
DOI :
10.1109/ICABME.2013.6648844
