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

Figure 1

(a) Section of the cavum conchae stained with Masson’s trichrome staining. (b) Small nerve trunks embedded in the subcutaneous connective tissue. (c) and (d) are enlargements of the rectangles in (a). (e) Nerve placed out of the cartilage of the cavum conchae immunostained for demonstration of S100 protein. A: anterior; E: external; CC: cavum conchae; C: auricular cartilage; S: skin. Arrows indicate nerve profiles. Scale bar is identical for (b), (c), (d), and (e).

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