Deep transcranial magnetic stimulation using deformed halo-circular assembly coil
Direct stimulation of deeper brain tissues by transcranial magnetic stimulation (dTMS) plays an important role in the study of reward and motivation mechanisms, which may be beneficial in the treatment of several neurological and psychiatric disorders. This paper presents numerical simulation of dTMS by considering the deformed Halo-circular assembly coil (dHCA coil). Three-dimensional distributions of the induced magnetic field and electric field in realistic head model by applying the dHCA coil were obtained by impedance method, and the results were compared with the normal Halo-circular assembly coil (HCA coil). The improved stimulation focality with reasonable stimulation depth can be achieved by employing the dHCA coil.