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

Volume

47

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

882

Lastpage

885

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);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2072987

Filename

5754695