Retro Auricular or Auricularis Posterior

Patient in supine position with head rotated to the side not under study. 

The auricle is pulled forward and several small creases will appear at the angle formed between the auricle and the scalp. These creases represent the stretching of the muscle underneath. The electrode is placed at that point to one-fourth to one-half inch in depth. 

The patient is asked to wiggle his ear. Even though the actual motion of the auricle may not be seen, however, electrical activity is generally seen. 

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