Conductivity of living intracranial tissues.
Resistivity values were measured from living human brain tissue in nine patients. A monopolar needle electrode was used with a measurement frequency of 50 kHz. Mean values were 3.51 Ohms m for grey matter and 3.91 Ohms m for white matter. Cerebrospiral fluid had a mean value of 0.80 Ohms m. Values for tumour tissues were dependent on the type of tumour and ranged from 2.30 to 9.70 Ohms m.
Latikka
J
J
Ragnar Granit Institute, Tampere University of Technology, Finland. juha.latikka@tut.fi
Kuurne
T
T
Eskola
H
H
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000502:physiology*; D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D004553:Electric Conductivity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography