There is what type of evidence that frontal sEMG recordings correlate highly with those from other muscle groups?

The evidence regarding the correlation between frontal surface electromyography (sEMG) recordings and those from other muscle groups is classified as weak. This classification is often based on studies that demonstrate only a limited relationship between the electrical activity recorded from the frontal area and the activity recorded from other muscle groups. This weak correlation suggests that while some relationship exists, it is not strong enough to imply that frontal sEMG activity can reliably predict or be directly related to the activity of other muscle groups.

Understanding the nuances of these correlations is important because they can affect the interpretation of biofeedback data, and practitioners must consider the limitations of sEMG findings when making clinical decisions. It highlights the need for comprehensive assessments that include multiple data sources rather than relying on isolated measurements from a single muscle group.