BRAIN ELECTROSTIMULATION. BRAIN ELECTROSTIMULATION Photo essay from hospital. The operation is generally executed under local anesthesia, except in cases like this one, where the patient is under general anesthesia. Probes are linked to a terminal, communicating via currents, in order to determine the final zone of implantation. The probes are mobile and ´descend´ into the thalamus while emitting a weak electrical current. The neurologist follows the progress of each probe on a screen and