Review of transcranial magnetic stimulation coils

CHEN Fu-qian1，ZHOU Jun1，2，WANG Yong-bo1，LI Li-hong1

（1. Department of Mechanical Engineering，Shandong University，Jinan 250061，China；2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture，Ministry of Education，Shandong University，Jinan 250061，China）

Abstract：In order to optimize the coil design，improve the deficient focality of induced magnetic field，provide further support for the development of coil design and apply the transcranial magnetic stimulation（TMS） to clinical and scientific applications effectively，analysis and comparations of different types of coil designs as well as their induced magnetic and electric filed were made on the basis of reviewing the current literature. Their focality and applications were also discussed.The research results indicate that，even though scientists proposed different kinds of coil designs，complicated configuration and high energy consumption make these new designs possess poor practicability. Most of them fail to supply satisfied spatial resolution when precise stimulation is needed. There is still a long way to optimize the coil design.