Abstract
That the auricles of both human beings and animals show involuntary movement on acoustic irritation has been established in the otologic literature since the beginning of the last century. Known as Preyer's reflex, since Preyer<sup>1</sup>revealed that the striking of tuning forks caused an involuntary jerking reflex of the auricle in new-born guinea-pigs and young rats, this phenomenon has been noted time and again, and is constantly employed in physiologic experimentation on animals as a proof that the animal hears. This reflex movement has also been discerned in man, and is described in the older as well as in the newer handbooks on otology. Lincke<sup>2</sup>and Politzer<sup>3</sup>frequently found patients having pathologic conditions in the ear who showed unconscious movements of the auricle either in a single circumscribed sector or in toto. Similar observations were mentioned by Urbantschitsch<sup>4</sup>and Lucae.<sup>5</sup>Schaefer and Giesswein
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