Provided are artificial muscle patches, which are adapted to be implanted adjacent a patient’s heart, and artificial sphincter cuffs, which are adapted to be implanted around a body lumen, such as the urethra, the anal canal, or the lower esophagus. The first and second current collectors have a thickness in the range of from about 0. The signal splitter preferably encompasses two or more capacitors. The calculated evaluate value is visually displayed on at least a two-dimensional space specified by the evaluate parameters.