scholarly journals Electric field distribution in a finite-volume head model of deep brain stimulation

2009 ◽  
Vol 31 (9) ◽  
pp. 1095-1103 ◽  
Author(s):  
Peadar F. Grant ◽  
Madeleine M. Lowery
Keyword(s):  
Deep Brain Stimulation ◽  
Electric Field ◽  
Finite Volume ◽  
Field Distribution ◽  
Brain Stimulation ◽  
Electric Field Distribution ◽  
Head Model ◽  
Deep Brain

Electric Field Distribution around the Deep Brain Stimulation Electrode Inferred from Dielectric Measurements

2012 ◽  
Vol 730-732 ◽  
pp. 26-31
Author(s):  
Bogdan Neagu ◽  
Eugen R. Neagu ◽  
Rui Igreja ◽  
C.J. Dias
Keyword(s):  
Deep Brain Stimulation ◽  
Electric Field ◽  
Uniform Distribution ◽  
Brain Stimulation ◽  
Electric Field Distribution ◽  
Electrode Impedance ◽  
Model Calculations ◽  
Deep Brain Stimulation Electrode ◽  
Stimulation Electrode ◽  
Deep Brain

Information about the spatial distribution of the electric field can be obtained by measuring the electrode impedance as a function of the diameter of the electrolyte surrounding the electrode. The non-uniform distribution of the electric field around the electrode is supported by the variation of the geometry factor (GF) with the electrical conductivity and geometry of the volume conductor. A comparison of the values obtained for the GF from experimental data, from model calculations and simulations help to understand the non-uniform distribution of the electric field. The GF calculated from four-electrode-measurements is significantly higher. GF should be used with caution in calculations of the deep brain stimulation (DBS) electrode impedance.

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