Transcranial magnetic stimulation (TMS) is a new noninvasive and painless technique for stimulation of central and peripheral neural systems. TMS uses faraday's induction low for depolarizing or hyperpolarizing underlying neurons. Parameters like, coil geometry, current, location and frequency of TMS, could cause changes in different brain areas. Regarding advantages, TMS is used for several medical therapeutic applications. Nevertheless wise usage of TMS, the mechanism and effect of this method is not exactly clear.
The purpose of this project is to determine the position and direction of TMS coil in order to optimize the magnetic stimulation of brain. For this purpose, coil position and orientation are changed to obtain maximum neuronal stimulation at target region. Studies on brain anatomy show that brain tissues are not isotropic in terms of electric and magnetic properties. Using MRI and DTI images, a more sophisticated model of head can be constructed and used for TMS simulation. In this case the results will be more realistic.

Research team: Ms. Fariba Kenarangi and Ms. Vajihe Farhadi