**1. Introduction**

"**The facial expressions of human beings fascinate me because they convey both the lowest, most bestial pleasures and the strongest and gentlest emotions of the spirit.**" This is how Sir Charles Bell described the facial mimic importance [1]. Facial palsy is a disease that reduces the facial symmetry, and as a consequence, it causes functional and esthetic alterations that affect the person mental health as well as the activities they perform on daily basis.

Facial palsy is a disorder that, in most cases, is evaluated qualitatively; therefore, it is essential to find an adequate method to use for diagnosis regardless of the evaluator perception. In this manner, a system capable to quantify the paralyzed hemiface was proposed and developed. Our proposal considers the healthy hemiface as the base

control one for the facial palsy and for a bilateral one, the system will use both to evaluate the paralysis degree and to provide an accurate and safer diagnosis in contrast with the nerve conduction diagnosis. Muscular information based on the current status as well as the muscular evolution movement will be gathered by the set of sensors array that would be able to measure the acceleration caused by the muscular movement at each hemiface. As a result of such analysis, it would be possible to deliver an optimal treatment as well as to execute it for each particular case.
