An image-guided transcranial direct current stimulation system: a pilot phantom study
- Authors
- Jung, Young-Jin; Kim, Jung-Hoon; Kim, Daejeong; Im, Chang-Hwan
- Issue Date
- Aug-2013
- Publisher
- IOP PUBLISHING LTD
- Keywords
- transcranial direct current stimulation (tDCS); finite element method (FEM); electrostatic field; image-guided tDCS (IG-tDCS); array-type electrode
- Citation
- PHYSIOLOGICAL MEASUREMENT, v.34, no.8, pp.937 - 950
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSIOLOGICAL MEASUREMENT
- Volume
- 34
- Number
- 8
- Start Page
- 937
- End Page
- 950
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26669
- DOI
- 10.1088/0967-3334/34/8/937
- ISSN
- 0967-3334
- Abstract
- In this study, an image-guided transcranial direct current stimulation (IG-tDCS) system that can deliver an increased stimulation current to a target brain area without the need to adjust the location of an active electrode was implemented. This IG-tDCS system was based on the array-type tDCS concept, which was validated through computer simulations in a previous study. Unlike a previous study, the present IG-tDCS system adopts a single reference electrode and an active electrode array consisting of 16 (4 x 4) sub-electrodes. The proposed IG-tDCS system is capable of shaping current flow inside the human head by controlling the input currents of the arrayed electrodes. Once a target brain area has been selected, the optimal injection current of each arrayed sub-electrode is evaluated automatically using a genetic algorithm in order to deliver the maximum available current to the target area. The operation of our pilot system was confirmed through a simple phantom experiment.
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