A biomedical sensor system is disclosed that includes a plurality of electrodes (50) and a contiguous adhesive material (52) that is in contact with each of the plurality of electrodes. The adhesive material has a high impedance and is dielectric yet changes its dielectric properties in the presence of biomedical signals. The adhesive material may include a polymeric material and a polar material that is dispersed within the polymeric material. The system may be adapted for ECG analysis.