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How Does TMS Work?

Is TMS Safe?

TMS is a safe and effective treatment.

TMS uses non-invasive magnetic pulses to stimulate the prefrontal cortex of
the brain to activate positive mood pathways:

• When an electrical current passes through a TMS coil it generates a magnetic field that
passes into the brain without resistance

• This magnetic field acts via induction to produce electrical activity in the underlying
cortical neurons

• If the stimulation is provided above a certain threshold, these neurons will depolarise

• The repeated firing of local cortical neurons induces an effect similar to long-term
potentiation.

The magnetic field reaches 2–3 cm beneath the skull, stimulating the
dorsolateral prefrontal cortex and activating a circuit which goes into the
limbic system.