动态脑电地形图调节的经穴磁刺激系统设计

摘要

针对现有电、磁刺激系统参数调节存在的不足，设计了一种利用动态脑电地形图反馈调节的经穴磁刺激系统。该系统磁刺激发生模块基于 DDS 技术，利用单片机编程产生刺激波形、幅度、频率可调的刺激信号，功率放大后，经喇叭状刺激线圈产生磁场，作用于人体穴位。脑电仪在线检测大脑的脑电信号，经计算机数据处理，实时显示大脑α波动态脑电地形图，并反馈调节磁刺激强度、刺激频率和刺激波形。结果表明，该系统可以优化经穴磁刺激的输入方式，改善大脑α波能量，促进脑瘫病人神经系统恢复和康复训练。%For the deficiencies of parameter adjustment in the existing electrical ,magnetic stimulation sys-tem ,a meridian magnetic stimulation system of feedback regulation using the dynamic brain electrical activity mapping (BEAM ) was designed .The magnetic stimulation module of this system generated adjustable elec -tromagnetic stimulation signals on waveform ,intensity ,frequency using DDS technology and programming by MCU .After these signals were amplified ,a magnetic field generated by a trumpet -shaped coil effected on the acupuncture point of human .The electroencephalograph detected the EEG signal online .EEG data was pro-cessed by computer .A dynamic BEAM of brain’s α-wave was displayed and used to adjust the magnetic stim -ulation intensity ,stimulation frequency and stimulation waveform .The results showed that this system can optimize the input of meridian magnetic stimulation ,improve the brain’s α-wave energy ,and promote the recovery of nervous system and the self -rehabilitation of paralyzed limbs for patients with cerebral palsy .