Design and clinical trials of magnetic stimulation instrument

At present, the magnetic stimulation system used in clinically research basically divided into two classes: high-frequency magnetic field of magnetic stimulation system and extremely low frequency magnetic stimulation system (ELF). The magnetic field strength of high-frequency magnetic field can reach 2.5T or higher. The magnetic field strength of extremely low frequency magnetic stimulation system is in commonly several mT, even smaller. Different from the existing magnetic stimulation system, the paper design a magnetic stimulation system is being controlled by SCM, the frequency and amplitude of magnetic stimulation system could be changed. In Bethune international peace hospital´s sleep disorders research center, we did research to compare the normal adults and sleepiness patients when they underwent stimulation. Tests show that, the magnetic stimulation inhibited certain parts of the brain cortex, sleepiness patient have stronger effect than normal adult.