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

Volume

44

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

220

Lastpage

223

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;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.554770

Filename

554770