Title :
Electrical impedance of electrode encapsulation tissue
Author :
Grill, Warren M. ; Mortimer, J. Thomas
Author_Institution :
Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA
fDate :
Oct. 29 1992-Nov. 1 1992
Abstract :
The complex resistivity of the encapsulation tissue that surrounds chronically implanted electrodes was measured in vitro as a function of frequency. The value of resistivity and its frequency dependence were functions of the morphology of the tissue. The results indicate that the encapsulation tissue will offer a significant barrier to current flow, and suggest that the encapsulation should be included when calculating the electric field induced by chronically implanted neural prosthesis electrodes.
Keywords :
bioelectric phenomena; biological tissues; biomedical electrodes; neurophysiology; prosthetics; chronically implanted electrodes; complex resistivity; electrical impedance; encapsulation tissue; frequency dependence; neural prosthesis electrodes; Instruments; Neurosurgery; Training;
Conference_Titel :
Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE
Conference_Location :
Paris
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1992.5761837
