In TCM ( transcranial magnetic stimulation) therapy, an electromagnet is applied to the left side of the forehead. This induces currents in neurons in the left prefrontal cortex--where brain imaging studies have shown a deficit in activity in depressed patients.
It is thought that this can induce activity and blood flow to this area, but also causes changes in areas deeper in the brain (responsible for mood regulation) to which neurons in the cortex connect. Side effects of TCM tend to be mild, especially compared to antidepressants, and the most common complaint is a mild headache, Simpson said.
Transcranial Magnetic Stimulation
Neurostar
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