Electrodes, multi-electrode patches, and electrodes for biomedical systems are provided. The electrode includes an adhesive film layer having a top surface and a bottom surface. A conductive element is substantially surrounded by the adhesive film layer. A conductive gel layer covers at least portion of a surface of the conductive element. The conducting gel comprises a material that does not result in significant skin irritation on a human subject after a period of at least about one week.
