Title :
The electrical conductivity of human cerebrospinal fluid at body temperature
Author :
Baumann, Stephen B. ; Wozny, David R. ; Kelly, Shawn K. ; Meno, Frank M.
Author_Institution :
Dept. of Neurological Surg., Univ. of Pittsburgh Med. Center, PA, USA
fDate :
3/1/1997 12:00:00 AM
Abstract :
The electrical conductivity of human cerebrospinal fluid (CSF) from seven patients was measured at both room temperature (25°C) and body temperature (37°C). Across the frequency range of 10 Hz-10 kHz, room temperature conductivity was 1.45 S/m, but body temperature conductivity was 1.79 S/m, approximately 23% higher. Modelers of electrical sources in the human brain have underestimated human CSF conductivity by as much as 44% for nearly two decades, and this should be corrected to increase the accuracy of source localization models.
Keywords :
bioelectric phenomena; biothermics; brain; electrical conductivity; 10 Hz to 10 kHz; 25 C; 37 C; body temperature; electrical sources; human brain; human cerebrospinal fluid electrical conductivity; model accuracy; patients; room temperature; source localization models; Biological system modeling; Biomedical measurements; Brain modeling; Conductivity measurement; Frequency measurement; Humans; Magnetic heads; Plasma temperature; Platinum; Temperature distribution; Body Temperature; Cerebrospinal Fluid; Electric Conductivity; Humans; Models, Neurological;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
