Skin impedance from 1 Hz to 1 MHz

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Título:	Skin impedance from 1 Hz to 1 MHz
Autor/a:	Rosell Ferrer, Francisco Javier; Colominas i Balagué, Josep; Riu Costa, Pere Joan; Pallàs Areny, Ramon; Webster, John G.
Otros autores:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. IEB - Instrumentació Electrònica i Biomèdica
Abstract:	We measured the impedance of skin coated with gel, but otherwise unprepared from 1 Hz to 1 MHz at ten sites on the thorax, leg, and forehead of ten subjects. For a 1 cm2 area, the 1 Hz impedance varied from 10 kΩ to 1 MΩ, which suggests that biopotential amplifier input impedance should be very high to avoid common mode to differential mode voltage conversion. 1 MHz impedance was tightly clustered about 120 Ω. 100 kHz impedance was about 220 Ω,which suggests that the variation in skin impedance may cause errors in two electrode electrical impedance tomographs.
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica -Impedance, Bioelectric -Skin -Biolectric phenomena -Electric impedance -Skin impedance -Thorax -Forehead -Biopotential amplifier input impedance -Common-mode-to-differential-mode voltage conversion -Leg -Impedància (Electricitat) -Pell -- Fisiologia
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Tipo de documento:	Artículo
Editor:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Pallàs Areny, Ramon; Colominas i Balagué, Josep; Rosell Ferrer, Francisco Javier

Pallàs Areny, Ramon; Colominas i Balagué, Josep; Rosell Ferrer, Francisco Javier

Rosell Ferrer, Francisco Javier; Cohen, Kevin P.; Webster, John G.

Rosell Ferrer, Francisco Javier; Webster, John G.

Frangi Caregnato, Alejandro; Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Viergever, Max A.

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