At TMS, a magnetic pulse is sent to the cerebral cortex by means of a coil through the skull. According to the law of Lenz-Faraday, the rapid change of the magnetic flux arouses an electric field that alters the neuronal activity in the area being treated. In clinical applications, repetitive TMS (rTMS), a type of TMS with a rhythmic and repetitive form, is mostly used for the treatment of neuropsychiatric disorders. This makes it possible to diagnose and propose treatment for neurological and psychiatric disorders. Moreover, TMS provides a better insight into the role that specific areas play in motor or cognitive activities in humans, and in this way also contributes to neuroscientific research.