Multi-layered sensor apparatus

A sensor array system (10, 30) can include a substrate layer (12, 14) that includes a stretchable and conformable material that is configured to allow spaced apart and interconnected portions thereof to stretch and conform commensurate with movement of the substrate layer (12, 14), such as when attached to a patient's body. A plurality of electrodes (16) are disposed on a contact surface of the substrate layer (12, 14). Electrically conductive paths are also disposed on the substrate layer (14) and extending from each of the electrodes to which it is connected and terminating in an end thereof. The substrate layer may itself include more than one layer, such as including a flexible substrate layer (12) that is affixed to a stretchable material layer (14).