A case of nevus comedonicus syndrome with atypical cutaneous presentation (widespread involvement without any particular pattern, midline lesions involving lower abdomen and involvement of bilateral pinna), and some unusual skeletal (adduction deformity involving bilateral metatarsal along with medial deviation at the level of tarsometatarsal joint), central nervous system (agenesis of corpus c...

Pityriasis lichenoides et varioliformis acuta (PLEVA), also known as Mucha-Habermann disease, is well known to dermatopathologists but might be unfamiliar to many primary care physicians. This brief report describes a case of PLEVA subsequent to cellulitis of the ear pinna, offers a brief review of the disease, and illustrates the importance of the family physician continuing an aggressive work...

The use of Head-Related Transfer Functions (HRTFs) in creating 3D sounds is gaining wide acceptance in multimedia applications. This paper presents a new method of modeling HRTFs based on the shape and size of the outer ear. Using signal processing tools, such as Prony’s signal modeling method, an appropriate set of time delays and a resonant frequency were used to approximate the measured Head...

IMPORTANCE For optimal aesthetic construction of the auricle in patients with severe microtia, it is important to construct an exquisite framework and place it in the correct natural position. In addition to its accurate vertical and sagittal positioning, normal elevation is of utmost importance because this determines the auricular width from the common anterior view in interpersonal communica...

In a two-microphone approach, interaural differences in time (ITD) and interaural differences in sound intensity (IID) have generally been used for sound source localization. But those cues are not effective for vertical localization in the median plane (direct front). For that purpose, spectral cues based on features of head-related transfer functions (HRTF) have been investigated, but they ar...

Monaurally deaf people lack the binaural acoustic difference cues in sound level and timing that are needed to encode sound location in the horizontal plane (azimuth). It has been proposed that these people therefore rely on spectral pinna cues of their normal ear to localize sounds. However, the acoustic head-shadow effect (HSE) might also serve as an azimuth cue, despite its ambiguity when ab...

The scattering around the human pinna that is captured by the Head-Related Transfer Functions (HRTFs) is a complex problem that creates uncertainties in both acoustical measurements and simulations. Within the simulation framework of Finite Difference Time Domain (FDTD) with axis-aligned staircase boundaries resulting from a voxelization process, the voxelization-based uncertainty propagating i...

The presence of heterotopic cartilage under the skin in the head and neck region constitutes a cartilaginous choristoma. Theoretically the choristomas can be of different types such as heterotopic presence of thyroid gland, bone, glial tissue and salivary gland, etc. The common theme shared by different choristomas is that these are very slow growing and benign. The excision is generally done e...