Transcranial Static Field Stimulation (tSMS) and Transcranial Direct Current Stimulation (tDCS) for the Treatment of Neurological Symptoms.

"* tSMS is a non-invasive brain stimulation (NIBS) technique that involves the application of a neodymium magnet to the scalp. Since the initial study introducing this method, numerous subsequent studies have confirmed that tSMS can lead to a reduction in corticospinal excitability.~* Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation (NIBS) technique that applies low-voltage electrical currents through surface electrodes on the scalp. Depending on the stimulation type (anodal or cathodal) tDCS can induce long-lasting increases or decreases in neuronal excitability and vascular-neuronal activity coupling. Cathodal stimulation leads to hyperpolarization and a reduction in excitability, whereas anodal stimulation induces depolarization and enhances excitability."