A new transcranial magnetic stimulation coil design to improve the focality

Author

Ai, Qingyao ; Li, Jiangtao ; Li, Meng ; Jiang, Wei ; Wang, Bo

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an, China

Volume

4

fYear

2010

fDate

16-18 Oct. 2010

Firstpage

1391

Lastpage

1395

Abstract

It is necessary to improve the focality of the transcranial magnetic stimulation (TMS) coil in order to minimize the undesired effects when the induced electric field exceeds the excitation threshold of the non-target tissues. In this paper, a new double-butterfly coil was proposed and its focality was compared with several other coil types such as butterfly coil and slinky coil. It is showed that the focality of the proposed coil has better focality than the butterfly and slinky coil. The effects of structural parameters on the HPR (Half Power Region, HPR) of the induced electrical field were carefully studied. Thus, suggestions on how to improve the focality of TMS coils are given.

Keywords

bioelectric phenomena; brain; coils; neurophysiology; transcranial magnetic stimulation; double-butterfly coil; excitation threshold; half power region; induced electric field; nontarget tissues; slinky coil; structural parameters; transcranial magnetic stimulation coil design; Coils; Electric fields; Electric potential; Magnetic fields; Magnetic stimulation; Structural engineering; Windings; Transcranial Magnetic Stimulation coil; focality;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on

Conference_Location

Yantai

Print_ISBN

978-1-4244-6495-1

Type

conf

DOI

10.1109/BMEI.2010.5639400

Filename

5639400