Abstract: An electrode patch 100 for monitoring electrical activity generated by a subject is disclosed. The electrode patch comprises a plurality of spatially arranged electrodes 102 for contacting an outer surface of a skin of the subject to sense and measure electrical potentials at multiple electrodes 102. The electrode patch 100 further comprises at least one connector portion 104 for connecting to a connector of a connector device. The connector portion 104 is spaced apart from the electrodes 102 and is electrically connected with the electrodes 102. A connector device for connecting to such electrode patch is also disclosed.