Final answer:
Both DBS and TMS treatments aim to alter the underlying pathway that causes tics in TS, but neither treatment has long-lasting effects.
Step-by-step explanation:
Both deep brain stimulation (DBS) and transcranial magnetic stimulation (TMS) treatments aim to alter the underlying pathway that causes tics in Tourette syndrome (TS). DBS involves the insertion of small electrodes in specific brain regions, targeting the thalamus and globus pallidus. TMS, on the other hand, uses a rapidly varying magnetic field placed close to certain sites in the brain. Both treatments have shown to reduce tic severity, but there is a lack of long-lasting effects.