When I give a seminar on auriculotherapy, I always give big importance to the innervation of the ear. In fact, the innervation of the ear explains why the auriculotherapy is that successful. Jean Bossy, René Bourdiol, both well insisted on the triple innervation of the external ear : the vagus nerve, the maxillary branch of the trigeminus nerve and the plexus cervicalis superficialis. Today, this fact seems to be evident. Evident and normal.