A Practical Approach to Electrode-Skin Impedance Unbalance Measurement

Real-time measurement of electrode impedance during intracochlear electrode insertion.

OBJECTIVES/HYPOTHESIS This pilot study details the use of a software tool that uses continuous impedance measurement during electrode insertion, with the eventual potential to assess and optimize electrode position and reduce insertional trauma. STUDY DESIGN Software development and experimental study with human cadaveric cochleae and two live surgeries. METHODS A prototype program to measu...

Electrode-less measurement of cell layers impedance.

This paper is devoted to yet unpublished electrode-less methods (ELM) of cell layers impedance measurement based on transformer principle. The main advantage of ELM is elimination uncertainties caused by interface between electrodes and measured electrolyte. The method of avoiding distortion caused by non-ideal transformer transfer function ("deconvolution") and errors caused by residual voltag...

Determination of the Parameters of the Skin-Electrode Impedance Model for ECG Measurement

Medical practitioners rely heavily upon the information obtained from electrocardiography. Some seriously ill hospital patients have their ECG constantly monitored throughout their stay, where accuracy in monitoring is essential to maintaining a high level of patient care. Fidelity in the measurement of the electrical activity of the heart is of primary importance for accurate diagnosis and tre...

Signal Quality in Dry Electrode EEG and the Relation to Skin-electrode Contact Impedance Magnitude

Current EEG research approaches are focusing on developing new dry electrode EEG (electroencephalogram) systems providing a high enough signal quality for a wide range of applications. This study proposes several parameters for evaluating signal quality of dry electrodes and relates the results to skin-electrode contact impedance magnitude values. The EEG recordings of a Ag/AgCl pinned electrod...

Skin-electrode impedance and its effect on recording cardiac potentials.