What is the accuracy of Electropalatography (EPG) for targeting labial sounds in treatment?

Electropalatography (EPG) is a diagnostic and treatment tool used primarily in speech therapy to visualize tongue-palate contact during speech production. When it comes to targeting labial sounds, which are produced with the lips (like /p/, /b/, and /m/), EPG is not as effective. This is because labial sounds do not involve contact with the palate, and thus the data collected through EPG is not relevant for these types of sounds. The system relies on measuring where the tongue contacts the palate, and since labials don't engage this area, the accuracy is inherently limited.

The statement that the accuracy of EPG for targeting labial sounds is false reflects the understanding that while EPG is beneficial for identifying tongue placement for other sounds (such as alveolars or velars), it does not provide useful information when assessing labial sound production. Therefore, this reasoning supports that the answer given indicates an understanding of the specific actions involved in speech production and the capabilities of EPG technology.