OBJECTIVE The objective of this study is to evaluate the auditory functions in chronic asthma patients with the use of pure tone high frequency audiometry. PATIENTS AND METHODS Twenty-two healthy controls and 42 adult patients were included as a prospective, randomized, and controlled study. Pulmonary function tests and blood gas studies were completed on all subjects. Asthma patients have di...

introduction: even though modern technology progresses so rapidly, annals of otology are replete with so many challenging article, which often compare various types of prosthesis. since there has not been a prospective randomized clinical trial study which compares the hearing result of total ossicular replacement prosthesis made of titanium with omega connector and polycel in the literature, w...

Draft ANSI S12.13 1991 Standard Evaluating the Effectiveness of Hearing Conservation Programs presents statistical protocols purportedly sensitive to temporary threshold shift (TTS) in occupational hearing conservation program (HCP) audiometric databases. Because it is well established that less TTS is found in humans with hearing loss than in those with essentially normal hearing, one might pr...

Loudness recruitment is a symptom of sensorineural hearing loss affecting the inner ear when the threshold of hearing is raised. The increase of the hearing threshold is often nonuniform across the range of audible frequencies and loudness perceptions are distorted. One method used to compensate for this type of hearing disorder is amplitude compression followed by equalization. In the present ...

background: there always has been a question about the best age for cochlear implantation (ci) in prelingual deaf children. the age factor in the outcome of cochlear implantation in prelingual deaf children has been the subject of many studies. the aim of the present study was to find the effect of age at the time of implantation on hearing threshold of these children.   methods: one hundred an...

The conditioned change in hearing sensitivity during a warning sound preceding a loud sound was investigated in the bottlenose dolphin. Hearing sensitivity was measured using pip-train test stimuli and auditory evoked potential recording. When the test/warning stimulus with a frequency of 22.5 or 32 kHz preceded the loud sound with a frequency of 22.5 kHz and a sound pressure level of 165 dB re...

Misalignment of interaural cortical response maps in asymmetric hearing loss evolves from initial gross divergence to near convergence over a 6 month recovery period. The evolution of left primary auditory cortex (AI) interaural frequency map changes is chronicled in squirrel monkeys with asymmetric hearing loss induced by overstimulating the right ear with a 1 kHz tone at 136 dB for 3 h. AI fr...

OBJECTIVE The aim of this study is to determine the feasibility of an Apple iOS-based automated hearing testing application and to compare its accuracy with conventional audiometry. STUDY DESIGN Prospective diagnostic study. Setting Academic medical center. SUBJECTS AND METHODS An iOS-based software application was developed to perform automated pure-tone hearing testing on the iPhone, iPod...

The higher field strength magnetic resonance imaging (MRI) such as 3 Tesla (T) and above generates noise that has potential detrimental effects on the hearing. Temporary threshold shifts following MRI examination have been reported for MRI with lower field strength. Such effect, however, have not been reported so far for a 3T MRI. We report a case that exemplifies the possible detrimental effec...

Human activities have changed the acoustic environment of many terrestrial and aquatic ecosystems around the globe. Mounting evidence indicates that the resulting anthropogenic noise can impact the behaviour and physiology of at least some species in a range of taxa. However, the majority of experimental studies have considered only immediate responses to single, relatively short-term noise eve...