Title :
A Novel Array-Type Transcranial Direct Current Stimulation (tDCS) System for Accurate Focusing on Targeted Brain Areas
Author :
Park, Ji-Hye ; Hong, Seung Bong ; Kim, Do-Won ; Suh, Minah ; Im, Chang-Hwan
Author_Institution :
Dept. of Biomed. Eng., Hanyang Univ., Seoul, South Korea
fDate :
5/1/2011 12:00:00 AM
Abstract :
In this paper, we propose a new array-type transcranial direct current stimulation (tDCS) system, which can modulate cortical excitability of human brain in a more effective manner. Once a target location inside a brain is determined, optimal injection current/potential at each electrode is calculated automatically by solving a constrained optimization problem. Current density distribution in a realistic head model was evaluated using the 3-D finite element method (FEM) adopting the superposition principle. Simulation results demonstrated that the proposed tDCS system enables effective and accurate field concentration on targeted brain areas.
Keywords :
biomedical electrodes; brain models; current density; finite element analysis; optimisation; transcranial magnetic stimulation; 3-D finite element method; FEM; array-type transcranial direct current stimulation system; constrained optimization problem; cortical excitability; current density distribution; electrode; field concentration; optimal injection current; optimal injection potential; realistic head model; superposition principle; targeted brain area focusing; Brain modeling; Current density; Electrodes; Finite element methods; Head; Optimization; Electromagnetic brain stimulation; finite element method (FEM); transcranial direct current stimulation (tDCS);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2072987
