Search Results
Results 51 - 100 of 1320
1 2 3 4 5 6 7 8 9 10 >
O'Brien Anna - - 2010
Audiometric measurements through a hearing aid ('in-situ') may facilitate provision of hearing services where these are limited. This study investigated the validity and reliability of in-situ air conduction hearing thresholds measured with closed and open domes relative to thresholds measured with insert earphones, and explored sources of variability in the ...
Röhl Markus - - 2011
Auditory functional magnetic resonance imaging (fMRI) was used to assess neural activation in the human auditory brainstem (AB) and cortex (AC) as a function of bandwidth (BW). We recorded brain activation of 22 normal hearing listeners induced by band pass filtered pink noise stimuli with equal sound pressure level of ...
Komazec Zoran - - 2010
BACKGROUND/AIM: A more recent method, the auditory steady-state response (ASSR), has become more and more important test method due to difference that was found in previous investigations between hearing thresholds determined by the ASSR and the pure-tone audiometry (PTA). The aim of this study was to evaluate the reliability of ...
Mangham Charles A CA - - 2010
To determine if nitinol-Teflon shape-memory stapes prostheses offer a hearing result advantage compared with platinum-Teflon pistons that must be manually crimped. Retrospective chart review. One hundred eighty-eight consecutive ears with either a platinum or a nitinol piston and primary stapes surgery between 1998 and 2009. Subspecialty private practice. One hundred ...
Mohammadi Saber - - 2010
Exposure of workers to mixtures of organic solvents and to occupational noise is frequent in a number of industries. Recent studies suggest that exposure to both can cause a more severe hearing loss than exposure to noise alone. Our cross-sectional study included 411 workers of a large automobile plant divided ...
Oeding Kristi K Program in Audiology and Communication Sciences, Washington University School of Medicine in St. Louis, USA. - - 2010
Patients with unilateral sensorineural hearing loss (USNHL) experience great difficulty listening to speech in noisy environments. A directional microphone (DM) could potentially improve speech recognition in this difficult listening environment. It is well known that DMs in behind-the-ear (BTE) and custom hearing aids can provide a greater signal-to-noise ratio (SNR) ...
Coleman Mark N - - 2010
In recent years it has become possible to investigate the hearing capabilities in fossils by analogy with studies in living taxa that correlate the bony morphology of the auditory system with hearing sensitivity. In this analysis, we used a jack-knife procedure to test the accuracy of one such study that ...
Goerlitz Holger R - - 2010
Ears evolved in many nocturnal insects, including some moths, to detect bat echolocation calls and evade capture [1, 2]. Although there is evidence that some bats emit echolocation calls that are inconspicuous to eared moths, it is difficult to determine whether this was an adaptation to moth hearing or originally ...
McCullagh Marjorie C - - 2011
Farm operators experience exposure to high noise and high prevalence of noise-induced hearing loss, but use of hearing protection in this worker group is low. The purpose of this study was to test a brief intervention to increase farm operators' use of hearing protection. In this one-group pre- and post-test ...
Scheidt Ryan E RE School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, - - 2010
Auditory-nerve fibers demonstrate dynamic response properties in that they adapt to rapid changes in sound level, both at the onset and offset of a sound. These dynamic response properties affect temporal coding of stimulus modulations that are perceptually relevant for many sounds such as speech and music. Temporal dynamics have ...
Healy Eric W - - 2010
The purpose of the present study was to assess whether diminished tolerance for disruptions to across-frequency timing in listeners with hearing impairment can be attributed to broad auditory tuning. In 2 experiments in which random assignment was used, sentences were represented as 3 noise bands centered at 530, 1500, and ...
Jin Su-Hyun - - 2010
Jin & Nelson (2006) found that although amplified speech recognition performance of hearing-impaired (HI) listeners was equal to that of normal-hearing (NH) listeners in quiet and in steady noise, nevertheless HI listeners' performance was significantly poorer in modulated noise. As a follow-up, the current study investigated whether three factors, auditory ...
Quddusi Taeed - - 2010
This study compares the effects of sodium thiosulphate (STS) and normal saline on the prevention of hearing loss. Animal research laboratory. Sixteen mice were randomized to receive intraperitoneal injections of either normal saline or STS. Auditory brainstem response testing was used to determine baseline and posttreatment hearing thresholds over the ...
Park HongJu - - 2010
OBJECTIVES: The function of outer hair cells can be measured objectively and noninvasively by distortion product otoacoustic emission (DPOAE). The aims of the study were to investigate the changes of DPOAE in the recovery course and to pursue the relationship between the changes of DPOAE and hearing improvement in patients ...
Al-Salim Sarah C SC Department of Special Education and Communication Disorders, University of Nebraska, Lincoln, Nebraska, - - 2010
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. CLS functions were obtained in 74 subjects, 58 with hearing loss and 16 with normal hearing. CLS functions ...
Brittan-Powell Elizabeth F - - 2010
Although lizards have highly sensitive ears, it is difficult to condition them to sound, making standard psychophysical assays of hearing sensitivity impractical. This paper describes non-invasive measurements of the auditory brainstem response (ABR) in both Tokay geckos (Gekko gecko; nocturnal animals, known for their loud vocalizations) and the green anole ...
Kumar Kaushlendra - - 2010
Noise affects one's hearing as well as balance mechanism. The hearing mechanism of the noise-exposed individuals has been extensively studied. However, in view of the poor research focus on the sacculo-collic reflexes, especially in this study area, the present study was undertaken to examine the vestibular evoked myogenic potentials (VEMP) ...
Moore Brian C J - - 2010
The benefit for speech intelligibility of extending the bandwidth of hearing aids was assessed when the target speech (sentences) and background (two talkers) were co-located or spatially separated. Also, the relative benefits of slow and fast compression were assessed. Sixteen hearing-impaired (HI) subjects with mild-to-moderate high-frequency hearing loss and eight ...
Riga Maria - - 2010
Although occupational noise-induced hearing loss (NIHL) has become a major problem in industrialized societies, there is a notable lack of effective screening protocols to ensure its early diagnosis. The aim of this study was to detect a potential role of extended high frequency (EHF) audiometry in industrial hearing screening protocols. ...
Elberling Claus C William Demant Holding A/S, Kongebakken 9, DK-2765 Smørum, Denmark. - - 2010
Auditory brainstem responses (ABRs) are recorded in ten normal-hearing adults (20 ears) in response to a standard 100 micros click and five chirps having different durations (sweeping rates). The chirps are constructed from five versions of a power function model of the cochlear-neural delay that is based on derived-band ABR ...
Cebulla Mario - - 2010
BACKGROUND: A cochlear delay model has previously been proposed for the construction of a chirp stimulus in order to compensate for the temporal dispersion in the auditory periphery. The large intersubject variability in the model data suggests that a chirp constructed from the average model data will not be able ...
Desloge Joseph G JG Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts - - 2010
The effects of audibility and age on masking for sentences in continuous and interrupted noise were examined in listeners with real and simulated hearing loss. The absolute thresholds of each of ten listeners with sensorineural hearing loss were simulated in normal-hearing listeners through a combination of spectrally-shaped threshold noise and ...
Idota Nozomi - - 2010
To assess the risk of hearing loss among workers using earphones as communication devices at noisy worksites, we compared temporary threshold shifts (TTS) between ears on which workers wore earphones and ears on which no earphones were worn. We measured ambient noise and personal noise exposure as well as noise ...
Arioz Umut - - 2011
In this study, a software program was developed for high-frequency hearing loss subjects that includes a detailed audiogram and novel enhancement methods. The software performs enhancements of the audibility of high-frequency sounds according to the subject's detailed 31-point audiogram. This provides subject-specific gains in the entire frequency spectrum, and especially ...
Shaw Paul - - 2010
Audiologists typically verify hearing instrument fitting using real-ear measurements (REM). Recently the modified pressure with stored equalization method (MPSE) has been recommended for use when verifying open non-occluding hearing instruments. The MPSE method does not use a reference microphone to maintain loudspeaker output during real-ear measurements and is therefore susceptible ...
McDermott Hugh - - 2010
BACKGROUND: The number of cochlear implant (CI) recipients who have usable acoustic hearing in at least one ear is continuing to grow. Many such CI users gain perceptual benefits from the simultaneous use of acoustic and electric hearing. In particular, it has been shown previously that use of an acoustic ...
Brimijoin W Owen WO MRC Institute of Hearing, Research Scottish Section, Glasgow Royal Infirmary, Glasgow G31 2ER, United Kingdom. - - 2010
Head movements are intimately involved in sound localization and may provide information that could aid an impaired auditory system. Using an infrared camera system, head position and orientation was measured for 17 normal-hearing and 14 hearing-impaired listeners seated at the center of a ring of loudspeakers. Listeners were asked to ...
Vater Marianne - - 2011
This review addresses the functional organization of the mammalian cochlea under a comparative and evolutionary perspective. A comparison of the monotreme cochlea with that of marsupial and placental mammals highlights important evolutionary steps towards a hearing organ dedicated to process higher frequencies and a larger frequency range than found in ...
Lee A - - 2010
OBJECTIVE: To evaluate the hearing preservation rate and speech perception scores in patients with profound high frequency hearing loss and acoustically aidable low frequency hearing, managed with the MED-EL electric acoustic stimulation system referenced to the insertion depth of the electrode array. STUDY DESIGN: Retrospective data analysis. PARTICIPANTS AND SETTING: ...
Perez Ronen - - 2010
CONCLUSION: A hole in the vestibule of the inner ear leads to augmentation of the hearing loss following noise exposure. Further research is needed to ascertain the mechanism. OBJECTIVES: The possible effects of a hole in the wall of the inner ear at the vestibule on noise-induced hearing loss were ...
Manley Geoffrey A - - 2010
We describe exceptional high-frequency hearing and vocalizations in a genus of pygopod lizards (Delma) that is endemic to Australia. Pygopods are a legless subfamily of geckos and share their highly specialized hearing organ. Hearing and vocalizations of amniote vertebrates were previously thought to differ clearly in their frequency ranges according ...
Kates James M - - 2010
The purpose of this paper is to study the effects of dynamic-range compression and linear amplification on speech intelligibility and quality for hearing-impaired listeners. The paper focuses on the relative benefit of compression compared to linear amplification and the effect of varying the number of compression channels and the compression ...
Arehart Kathryn H - - 2010
OBJECTIVES: The purpose of this study was to measure subjective quality ratings in listeners with normal hearing and listeners with hearing loss for speech subjected to a wide range of processing conditions that are representative of real hearing aids. DESIGN: Speech quality was assessed using a rating scale in a ...
Manley Geoffrey A - - 2011
The evolutionary processes that modified the structure and function of lizard auditory papillae during the separation of the familial lineages during the Jurassic have resulted in a remarkable variety of family-typical papillae. These papillae vary structurally in their size, in the patterns of the distribution of hair-cell types, in the ...
Coleman Mark N - - 2010
Primates show distinctions in hearing sensitivity and auditory morphology that generally follow phylogenetic patterns. However, few previous studies have attempted to investigate how differences in primate hearing are directly related to differences in ear morphology. This research helps fill this void by exploring the form-to-function relationships of the auditory system ...
Schulz-Mirbach Tanja - - 2010
Cave fish have rarely been investigated with regard to their inner ear morphology, hearing abilities, and acoustic communication. Based on a previous study that revealed morphological differences in the saccular otolith between a cave and two surface populations of Poecilia mexicana, we checked for additional differences in utricular and lagenar ...
D'haenens Wendy - - 2010
OBJECTIVE: The present study aimed at establishing clinically efficient stopping criteria for a multiple 80-Hz auditory steady-state response (ASSR) system. METHODS: In Experiment 1, data of 31 normal-hearing subjects were analyzed off-line to propose stopping rules. Consequently, ASSR recordings will be stopped when (1) all 8 responses reach significance and ...
Nelson Jeffrey J - - 2011
Patient and equipment safety has become increasingly scrutinized in today's medical care. Routine otolaryngologic evaluation often involves suctioning with Frazier-type suction devices in the ear canal for improved visualization, but data are limited on the potential acoustic trauma from ear canal suction devices. This study intends to document the objective ...
Oishi Naoki - - 2010
OBJECTIVES: To determine the long-term prognosis of low-frequency hearing loss and predictive factors for the 10-year outcome of low-frequency hearing loss. STUDY DESIGN: Case series with chart review. SETTING: Tertiary referral center. SUBJECTS AND METHODS: From 1979 to 1998, 466 consecutive patients with low-frequency hearing loss received initial treatment at ...
Popelka Gerald R GR Audiology, Otolaryngology-Head and Neck Surgery, Stanford University, 801 Welch Road, Stanford, CA 94305-5739, USA. - - 2010
A new intraoral bone-conduction device has advantages over existing bone-conduction devices for reducing the auditory deficits associated with single-sided deafness (SSD). Existing bone-conduction devices effectively mitigate auditory deficits from single-sided deafness but have suboptimal microphone locations, limited frequency range, and/or require invasive surgery. A new device has been designed to ...
Mulsow Jason - - 2010
A within-subject comparison of auditory steady-state response (ASSR) and psychophysical measurements of aerial hearing sensitivity was conducted with an individual of the largest otariid species, the Steller sea lion. Psychophysical methods were used to obtain an unmasked aerial audiogram at 13 frequencies, spanning a range of 0.125-34 kHz. The subject ...
Boeheim Klaus - - 2010
OBJECTIVE: To compare 2 open-ear hearing solutions for sloping high-frequency sensorineural hearing loss: open-fit hearing aid (HA) and active middle ear implant (AMEI). STUDY DESIGN: Within-subjects prospective design. SETTING: Tertiary referral hospital. PATIENTS AND DEVICES: Fourteen patients with sloping, high-frequency sensorineural hearing loss were recruited from 39 patients previously implanted ...
Swanepoel De Wet de W Department of Communication Pathology, University of Pretoria and Callier Center for Communication Disorders, University of Texas at Dallas, USA. - - 2010
To determine (i) noise exposure levels of spectators at a FIFA 2010 designated training stadium during a premier soccer league match; and (ii) changes in auditory functioning after the match. This was a one-group pretest-post-test design of football spectators attending a premier soccer league match at a designated FIFA 2010 ...
Dooling Robert J - - 2010
The auditory world of animals is, in many cases, quite different from our own due to evolutionary pressures that have created anatomical and physiological differences in auditory structures. However, there are a number of commonalities of function and mechanisms across many species that point to general concepts of auditory perception. ...
Bowles Ann E - - 2010
Author Shane tracked cultured white seabass (Atractoscion nobilis) instrumented with 69-kHz ultrasonic coded transmitters (UCTs) in the vicinity of harbor seals (Phoca vitulina), later finding the bones of fish associated with UCTs. This led the authors to suspect that seals had targeted and eaten instrumented fish. To determine whether seals ...
Tan Chin-Tuan - - 2010
The goals of this study were to characterize and model the perception of nonlinearly distorted speech and music by hearing-impaired listeners. Hearing-impaired listeners were asked to rate the perceived quality of speech and music that had been subjected to various forms of nonlinear distortion, some of which are inherent to ...
Vernon Julia A - - 2010
Exploding balloons are popular demonstrations in introductory chemistry and physical science classes and as part of outreach programs. However, as impulsive noise sources, these demonstrations constitute a possible hearing damage risk to both the demonstrator and the audience. Measurements of various hydrogen, hydrogen-oxygen, and acetylene-oxygen balloons were made in both ...
Agrawal Yuri - - 2010
Noise exposure is a significant risk factor for hearing loss; recent analyses from a national sample of US adults have shown that occupational and firearm noise exposure increase the risk of hearing loss by 60% and 90%, respectively. Noise trauma typically produces a high-frequency pattern of hearing loss due to ...
Summers Van - - 2010
Suprathreshold distortions in auditory processing contribute to speech recognition deficits for hearing-impaired (HI) listeners in noise. Outer hair cell damage and attendant reductions in frequency selectivity and peripheral compression may contribute to these deficits. Reduced sensitivity to spectral or temporal modulations or temporal fine structure (TFS) information may also play ...
Phatak Sandeep A - - 2010
Normal-hearing (NH) listeners show better speech recognition in fluctuating maskers than in steady-state (SS) maskers. Hearing-impaired (HI) listeners do not show such benefit due to elevated thresholds. With amplification, HI listeners show some benefit, but significantly less than that for NH listeners. To investigate the reduced benefit in HI listeners ...
1 2 3 4 5 6 7 8 9 10 >