What does input impedance refer to in the context of biofeedback?

Input impedance in the context of biofeedback refers to the resistance to current flow from various body layers. This concept is crucial because biofeedback systems often work by detecting electrical signals from the body, primarily through electrodes placed on the skin. The body's tissues—such as skin, fat, muscle, and underlying structures—have different electrical properties, which collectively contribute to the overall input impedance.

High input impedance indicates that the device can accurately read the small electrical signals generated by the body while minimizing interference and noise. An understanding of input impedance is significant for ensuring the effectiveness of biofeedback techniques, as it affects the quality of the signals captured and how they can be interpreted for therapeutic purposes.

By effectively capturing these signals, practitioners can provide feedback to patients regarding physiological functions, helping them to develop better control over their bodies and improve overall outcomes of treatment.