Abstract：Transcranial magnetic stimulation (TMS) is a non-invasive nerve stimulation technique that has been widely used in clinical treatment in recent years. Compared with traditional single-channel magnetic stimulation coil, multi-channel coil array has shown more attractive capacities to achieve multi-point synchronous stimulation, scanning stimulation, and flexible switch of various stimulation patterns. However, the driving and controlling methods of the multi-channel TMS require further investigations due to the design complexity of the driving circuits and the electromagnetic coupling of multi-coils. A driving and controlling circuit was designed based on the 4×4 straight-wire array in this paper. The driving circuit was designed to generate the pulse current, mainly consisting of one capacitor charging segment and eight discharging segments. The stimulating pattern, amplitude and repetitive frequency of the stimulating current could be flexibly adjusted through the controlling circuit. By theoretical calculation and experimental measurement, the effect of electromagnetic coupling on current was analyzed. The experimental results also illustrated the ability for achieving the adjustment of the repetitive frequency and stimulating pattern. The stimulating strength below the coil array (3cm) was theoretically proved exceeding the excitation threshold of brain cells.
李江涛, 曹辉, 郑敏军, 赵政. 多通道经颅磁刺激线圈阵列的驱动与控制[J]. 电工技术学报, 2017, 32(22): 158-165.
Li Jiangtao, Cao Hui, Zheng Minjun, Zhao Zheng. The Drive and Control of Multi-Channel Transcranial Magnetic Stimulation Coil Array. Transactions of China Electrotechnical Society, 2017, 32(22): 158-165.
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2017, Vol. 32 
