NeuroSigma is a life sciences company focused on developing bioelectronic products to treat patients suffering from major neurological and neuropsychiatric disorders such as epilepsy and depression. Our non-invasive eTNS system employs trigeminal nerve stimulation, or TNS, as adjunctive therapy for drug-resistant epilepsy and major depressive disorder. Adjunctive therapies, including adjunctive medications, are used in combination with one or more other therapies and are commonly used by patients who do not respond to first-line treatment with the desired stabilization or improvement of their condition. eTNS is a novel medical treatment that delivers low-intensity electrical current through a single-use patch to stimulate branches of the trigeminal nerve near the surface of the forehead, thereby non-invasively modulating activity in targeted brain regions.