Magnetic field generation coil

Patent Pending PROBLEM TO BE SOLVED: To provide a converging magnetic field generation coil for transcranial magnetic stimulation capable of magnetically stimulating a brain deep part by a relatively simple apparatus. ; SOLUTION: The converging magnetic field generation coil for the transcranial magnetic stimulation is characterized by that a pair of coils 1 and 2 are disposed facing each other, the coils 1 and 2 are excited respectively in opposite directions and a ring 3 of the conductor of a closed circuit is disposed between the coils.