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Transcranial Magnetic Stimulation.

I. Description Transcranial magnetic stimulation (TMS), including repetitive transcranial magnetic stimulation (rTMS) and deep transcranial magnetic stimulation (dTMS), is a noninvasive method of delivering electrical stimulation to the brain. It uses a specifically designed magnetic coil that is placed in contact with the scalp to generate rapidly alternating magnetic fields and produces electrical stimulation of cortical neurons. The procedure takes approximately 20-40 minutes and is generally administered daily over a four to seven week period. TMS can be performed in an office setting as it does not require anesthesia and does not induce a convulsion.