Nice article on TMS, and other neuromodulation technologies,in the IEEE Spectrum. The article was originally written in 2006 but it has some good insight into the world of neuromodulation. Reza Jalinous was interviewed for the TMS portion of the article as well as Dr. Pascual-Leone, whom I learned TMS and tDCS techniques from.
"Assuming that all the new brain stimulation techniques prove effective in the many upcoming trials, the psychiatrist's toolbox will look very different a decade from now. Patients will probably first be offered the less invasive techniques, such as transcranial direct current and magnetic stimulation; then the more invasive ones, such as the seizure therapies; and finally such surgical technologies as deep-brain stimulation and vagus nerve stimulation."
Illustration from IEEE Spectrum, by Matt Mahurin
