Innervation of the Human Cavum Conchae and Auditory Canal: Anatomical Basis for Transcutaneous Auricular Nerve Stimulation

Figure 5

Sections of the external segment of the meatus acusticus externus cartilagineus (MAEC) showing nerve profiles out of the cartilage immunostained for S100 protein ((a), (d)) and neurofilaments ((b), (c)) stained with Masson’s trichome showing details of the canal skin. Arrows indicate nerve profiles. Scale bar is identical for (a)–(d).

(a)

(b)

(c)

(d)