Transcranial Magnetic Stimulation (TMS) is a non-invasive method of neurostimulation that has been used since 1985 to study the functionality of the brain. Through the principle of electromagnetic induction, TMS generates highly concentrated, focalized, pulsating magnetic fields which can pass easily through the skull unimpeded and into the brain. The result of the pulsating magnetic field when in contact with a conductive material – such as brain tissue – can induce a very small amount of electrical current within a targeted area. With an electrical current sufficient enough, neurons within the targeted area will begin communicating with other connected neurons, which would ultimately cause pathways in the brain to activate and strengthen.