Title :
System for making quantitative, in vivo measurements of inner ear tissue impedances
Author :
Suesserman, Michael F. ; Spelman, Francis A.
Author_Institution :
Dept. of Bioeng., Washington Univ., Seattle, WA, USA
Abstract :
An in vivo impedance measurement system capable of accurately and nondestructively measuring complex tissue impedances within a guinea pig cochlea is introduced. The measurement system is based on a four-electrode reflection coefficient technique, and the general technique can be readily applied to any tissue or aqueous system that can be theoretically modeled. Calibrations involving glass, which represents an ideal in vitro system, validate the accuracy of the proposed impedance measurement system
Keywords :
bioelectric phenomena; biological techniques and instruments; ear; electric impedance measurement; 4-electrode reflection coefficient technique; aqueous system; glass; guinea pig cochlea; in vitro system; in vivo measurements; inner ear tissue impedance; tissue; Current measurement; Ear; Electrodes; Impedance measurement; In vivo; Microelectrodes; Optical amplifiers; Optical reflection; Signal generators; Synchronous motors;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96084
