Hi Sabari,

Bio-impedance measurement can be performed by 2 possible approach: either by passing current through human body with a measurement of the induced voltage response across it, or by applying voltage across the human body with a measurement of the induced current through it. Both approach gives an indirect indication of the overall bio-impedance, calculated by using Ohm's Law (R=V/I).

This is just basic concept for bio-impedance, for more information you can go through the book authored by Grimnes S. and Martinsen O.G. - "Bioimpedance & Bioelectricity Basics".

Dear Sabari Kumar,

while measuring bio-impedance you don't have an inner v/ an outer body value. In don't have any news about the possibility to separate them.

Hoi Leong Lee's answer is correct. Naturally you will obtain the system impedance, which includes the impedance of the electrode-skin, and skin surface responses convolved with the inside-body impedance characteristic. Can I ask you to provide some more information about what you are doing?

Dear Sabari,

It is only possible through simulations since it requires the calculation of the impedance sensitivity distribution. The impedance sensitivity distribution describes how effectively each region in your model is contributing to the measured impedance based on the current density fields generated using the current and voltage electrodes. You can find more information regarding the simulation setting here (eq.13 therein)

Article Recording characteristics of electrical impedance myography ...

Regards

Benjamin