A method of correlating sonic activity with electric activity in an entity of interest includes interrogating, via a sonic sensor device, the physical structure, shape and/or form of an object in the entity of interest, interrogating, via an electric field sensor, the electric and/or magnetic potential associated with the object or the physical displacement of the geo-electric field by the object while avoiding resistive contact with other portions of the entity of interest, and linking results from the sonic sensor device to results from the electric field sensor.