Title :
The conductivity of brain tissues: comparison of results in vivo and in vitro measurements
Author :
Latikka, J.A. ; Hyttinen, J.A. ; Kuurne, T.A. ; Eskola, H.J. ; Malmivuo, J.A.
Author_Institution :
Ragnar Granit Inst., Tampere Univ. of Technol., Finland
Abstract :
Electric properties of tissues depend on many factors, including measurement frequency and temperature. Properties differ also in vivo and in vitro situations. We have collected conductivity values from several studies and compared the values measured from living tissue and tissue samples. The results show that the resistivity ratio of grey and white matter increases 36% after death, and the resistivity values increase over 100%
Keywords :
bioelectric phenomena; biological tissues; biomembrane transport; brain; electrical conductivity; electrical resistivity; electroencephalography; brain tissue conductivity; cellular membrane; death; electric properties; grey matter; in vitro measurements; in vivo measurements; ionic diffusion processes; living tissue; measurement frequency; resistivity ratio; temperature; tissue samples; white matter; Biomedical measurements; Brain modeling; Conductivity measurement; Electrodes; Electroencephalography; Frequency measurement; In vitro; In vivo; Position measurement; Temperature measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Conference_Location :
Istanbul
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019092
