What is the advantage of facial EMG vis–vis functional MRI (fMRI)?
The study of the brain with imaging methods such as functional MRI (fMRI) is intriguing and potentially very informative. However its not yet understood what brain activation patterns are desirable, and current theory is too rudimentary to provide direction (Tierney, 2004). At this point fMRI studies are also prohibitively expensive and time consuming. In contrast facial EMG provides a simpler and probably more valid measure of emotional response.
