INTRODUCTION The most common mechanisms of traumatic ear injury are bites, motor vehicle accidents, and assault with knives or firearms. Repair of traumatic auricle avulsion is technically and aesthetically challenging, primarily because of the irregular and unique cartilaginous anatomy of the ear. Classic replantation of a nonvascularized composite graft may succeed if the amputated portion of...

we report five cases of duplicated external ear canal with especial attention to its histology and surgical care of facial nerve for their complete resection. these five patients were selected from 50 cases of first bronchial cleft anomalies including atretic external ear canals, preauricular fistula, cyst and sinuses. the characteristic histopathology and clinical features such as external ope...

Introduction: A 76-year-old male presented to our department with a neoplastic growth on his left auricle. Case Presentation: The patient was referred from another hospital because he very concerned about the cosmetic outcome. He had been refused an extensive plastic intervention due age and comorbidities. Clinical examination revealed 1.3 × 1.4 cm ulcerative upper ear helix. After total excisi...

According to Helmholtz's Square illusion, a square appears wider when it is filled with vertical lines and higher when filled with horizontal lines (Helmholtz von, 1866). Recently, Pinna (2010a) demonstrated that the grouping of small squares on the basis of the similarity principle influences also perception of their shape and of the whole emerging shapes. The direction imparted by grouping is...

Traumatic ear amputations are relatively rare. Whenever possible, ear re-implantation should be attempted; however the choice of the surgical procedure must be judicious. In the current report, a case of complete non-microsurgical salvage of a partially amputated ear treated by the pocket technique described by Mladick was presented. The surgical technique is described in detail by serial photo...

Introduction: Nodular fasciitis is described as a benign reactive proliferation of myofibroblasts. Due to its rapid-growing nature, a precise clinical diagnosis is difficult and the condition is frequently misdiagnosed as malignant lesions.   Case Report: In this study, we present the case of a young woman with an auricular nodular fasciitis as an example of one of the rarest sites of this tumo...

It has been suggested that the first spectral peak and the first two spectral notches of head-related transfer functions (HRTFs) are cues for sound localization in the median plane. Therefore, to examine the mechanism for generating spectral peaks and notches, HRTFs were calculated from four head shapes using the finite-difference time-domain method. The comparison between HRTFs calculated from...

We measured the movements of the external ear, or pinna, using the magnetic search coil technique in cats trained to look at auditory and visual targets for a food reward. No behavioral contingencies were placed on pinna movements. Prominent pinna movements accompany eye movements when the animal orients to either auditory or visual stimuli. In visual trials the pinna movements are coordinated ...

This paper addresses the fundamental problem of relating the anthropometry of the pinna to the localization cues it creates. The HRTFs for isolated pinnae (which are called PRTFs) are analyzed and modeled for sound sources directly in front of the listener. It is shown that a low-order filter model, with parameters suggested by or derived from pinna anthropometry, provides a good fit to the dat...