The data for the present investigation were collected between August, 1951, and August, 1956, in the Butterley Company's works at Codnor Park. In some of the shops of these works the noise is so intense that outsiders experience it as unpleasant and in some spots even as unbearable. During the period mentioned no protective devices were in use, largely because the workers found many of the exis...

BACKGROUND Little information is available about the pattern of ear diseases in the elderly population. Therefore, the present study aims to determine the pattern of ear diseases among elderly Nigerians, so as to provide an objective basis for cost-effective health care planning for the emerging geriatric population. METHODS A retrospective study of 320 patients aged 60 years or older present...

Idiopathic sudden sensorineural hearing loss (SSNHL) is defined as hearing loss of at least 30 dB in 3 sequential frequencies occurring within 72 hours . Its estimated incidence ranges from 5 to 20 cases per 100,000 population , lowest in individuals aged 2030 years (4.7 per 100,000), and highest in those aged 50-60 years (15.8 per 100,000) . Both sexes are equally affected and about 95% of the...

Presbycusis, or sensorineural hearing loss in the elderly population, affects approximately 40% to 50% of people over the age of 75. A variety of devices are available to those with hearing loss. Cochlear implants, for example, are especially useful for those with severe-to-profound hearing loss. The population is aging, so the demand for cochlear implantation in ambulatory surgery centers will...

The hallmark of age-related (presbycusis) and noise-induced hearing loss is high-frequency (> 20 kHz) hearing loss. Through a collaborative study with TMGC (Tennessee Mouse Genome Consortium), seventeen ENU-induced mouse mutation strains with high-frequency hearing loss have been identified, but affected genes are yet identified. As a first step in identifying the gene/s underlying the ENU muta...

This article presents a new method for analyzing Automatic Speech Recognition (ASR) results at the phonological feature level. To this end the Levenshtein distance algorithm is refined in order to take into account the distinctive features opposing substituted phonemes. This method allows to survey features additions or deletions, providing microscopic qualitative information as a complement to...