Title :
Quantification of sensibility to conductivity changes in bipolar rheoencephalography
Author :
Perez, Juan J. ; Guijarro, Enrique ; Barcia, Juan Antonio
Author_Institution :
Lab. Integrado de Bioingenieria, Univ. Politecnica de Valencia, Spain
Abstract :
The authors´ purpose is to quantify the rate of bipolar rheoencephalogram originated by changes in scalp and brain conductivities. They use a four-layer sphere model of the head, which is solved by numerical methods. Array of solutions obtained when brain and scalp conductivities change separately, shows that only 7% of the rheoencephalogram is caused by changes in brain conductivity
Keywords :
blood flow measurement; brain models; electrical conductivity measurement; electroencephalography; finite element analysis; bipolar rheoencephalography; brain conductivity; conductivity changes sensibility quantification; electrodiagnostics; four-layer sphere model; head model; numerical methods; rheoencephalogram; scalp conductivity; Blood flow; Conductivity; Current density; Electrodes; Electroencephalography; Finite element methods; Impedance measurement; Laboratories; Scalp; Skull;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802533
