Title :
A novel array-type transcranial direct current stimulation (tDCS) system for accurate focusing on targeted brain regions
Author :
Park, Ji-Hye ; Kim, Do-Won ; Im, Chang-Hwan
Author_Institution :
Dept. of Biomed. Eng., Yonsei Univ., Wonju, South Korea
Abstract :
In this paper, we propose a new transcranial direct current stimulation (tDCS) system which uses multiple electrode arrays. Once a target location inside a human brain is selected, optimal injection current at each electrode is determined by solving a constrained optimization problem, of which the objective function is evaluated by 3D finite element method (FEM) adopting the superposition principle for enhanced computational efficiency. Simulation studies demonstrated that the proposed tDCS system enables more effective and accurate focusing on targeted brain areas than the conventional system.
Keywords :
bioelectric phenomena; biomedical electrodes; biomedical measurement; brain; finite element analysis; medical computing; neurophysiology; optimisation; 3D finite element method; FEM; accurate focusing; constrained optimization problem; enhanced computational efficiency; multiple electrode arrays; optimal injection current; superposition principle; tDCS system; targeted brain region; transcranial direct current stimulation system; Biomedical electrodes; Biomedical engineering; Brain modeling; Computer simulation; Constraint optimization; Current density; Finite element methods; Humans; Parkinson´s disease; Scalp;
Conference_Titel :
Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-7059-4
DOI :
10.1109/CEFC.2010.5481279
