Assessment of the Electric field distribution induced by deep Transcranial Magnetic Stimulation for the treatment of depressive disorders

In the last few years, deep transcranial magnetic stimulation (dTMS) has been used for the treatment of depressive disorders. To facilitate its clinical application, particular shapes of coils (Hesed coils) were designed. Given their increasing demand and the lack of studies which accurately characterize their use, this paper aims to provide a picture of the distribution of the induced electric field in four realistic human models of different ages and gender. In detail, the electric field distributions were calculated by using numerical techniques in the brain structures potentially involved in the progression of the disease and were quantified both in terms of amplitude levels and focusing power of the distribution.