Transcranial magnetic stimulation
Transcranial magnetic stimulation (TMS) is a therapeutic procedure that helps modify brain activity using a magnetic field that comes from an external source, located near the scalp. Transcranial magnetic stimulation is safe, effective and non-invasive.
Following a session lasting about half an hour that requires no special preparation, patients can go about their business without restriction. The source of the magnetic stimulation is a device that generates a variable magnetic field that is then transmitted to the brain using a coil placed close to the scalp, vis-a-vis the area of the brain to be stimulated.
The device can generate a single stimulation at a time. In that case, we’re talking about simple transcranial magnetic stimulation. It can also generate multiple stimulations, which is referred to as repetitive transcranial magnetic stimulation (rTMS). It’s this latter that’s generally used in psychiatric treatments.
The magnetic field produced near the scalp easily passes through the different anatomical structures and reaches the intended brain structures. It modifies their activity to allow them to function better.
Depending on the stimulation parameters used, the effect on the brain structure will be either stimulating or inhibiting. We seek to produce a stimulating effect in the structures that are functioning too slowly. This is the case with the left dorsolateral prefrontal cortex (LDLPFC) in major depression. On the other hand, we seek to produce an inhibiting effect in the structures that are functioning excessively. This is the case with the temporoparietal cortex (TPC) in cases of tinnitus or auditory hallucinations.
Our specialists adjust the stimulation parameters according to each patient’s specific needs.