AIM OF THE STUDY To evaluate the influence of high frequency hearing loss (> 8000 Hz) on distortion product otoacoustic emissions registered in the frequency range from 0,5 to 8 kHz. MATERIAL AND METHODS 280 ears with tinnitus and normal hearing (0.25-8 kHz) divided into 3 groups depending on the degree of high frequency hearing loss: group A--hearing threshold up to 20 dB for 10, 12.5, 14 an...

OBJECTIVES/HYPOTHESIS To evaluate the relationships among measures of stroke risk and hearing in an African American cardiovascular study cohort. STUDY DESIGN Prospective cohort study. METHODS The relationships between stroke risk profiles and hearing of 1,107 individuals from a cohort of African Americans were assessed. Several different hearing pure-tone averages (PTAs) were constructed r...

Hypoacusis is the most prevalent sensory disability in the world and consequently, it can lead to impede speech in human beings. One best approach to tackle this issue is to conduct early and effective hearing screening test using Electroencephalogram (EEG). EEG based hearing threshold level determination is most suitable for persons who lack verbal communication and behavioral response to soun...

INTRODUCTION  In the dentistry practice, dentists are exposed to harmful effects caused by several factors, such as the noise produced by their work instruments. In 1959, the American Dental Association recommended periodical hearing assessments and the use of ear protectors. Aquiring more information regarding dentists', dental nurses', and prosthodontists' hearing abilities is necessary to pr...

Ontogenetic development of hearing sensitivity has been verified in many groups vertebrates, but not turtles. Turtles exhibit sexual dimorphism hearing. To examine the female turtles, auditory brainstem responses (ABR) were compared by assessing hearing-sensitivity bandwidth, ABR threshold, and latency Trachemys scripta elegans aged 1 week, month, yr, 5 yr. The bandwidths 0.2–1.1, 0.2–1.3, 0.2–...

the aim of the current study is to investigate hearing function in patients with allergic rhinitis. fifty-eight patients with positive skin prick test (group 1) (116 ears) and    31 subjects with negative skin prick test (62 ears) as group 2 were included. pure tone audiometry at 250,500, 1000, 2000, 4000 and 8000 hz and immittance measures, including tympanometry and acoustic reflex tests, wer...

The classic view of sensorineural hearing loss (SNHL) is that the "primary" targets are hair cells, and that cochlear-nerve loss is "secondary" to hair cell degeneration. Our recent work in mouse and guinea pig has challenged that view. In noise-induced hearing loss, exposures causing only reversible threshold shifts (and no hair cell loss) nevertheless cause permanent loss of >50% of cochlear-...

OBJECTIVE To further examine the reliability of categorical loudness scaling (CLS) for individual loudness categories and for the slope of the CLS functions. And, to evaluate the relationship between CLS and audiometric threshold. DESIGN CLS functions were obtained in 74 subjects, 58 with hearing loss and 16 with normal hearing. CLS functions were measured at three frequencies (1, 2, and 4 kH...

background: our hearing ability in space is critical for hearing speech in noisy environment and localization. the spatial hearing questionnaire (shq) has been devised to focus only on spatial haring tasks (e.g., lateralization, distance detection and binaural detection). the aim of the present study was to determine the reliability and validity of the persian translation of the shq (spatial he...

Frequency difference limens were determined as a function of stimulus duration in five normal-hearing and seven hearing-impaired subjects. The frequency DL duration functions obtained from normal-hearing subjects were similar to those reported by Liang and Chistovich [Sov. Phys. Acoust. 6, 75-80 (1961)]. As duration increased, the DL's improved rapidly over a range of short durations, improved ...