Abstract:
BACKGROUND:Sentence understanding scores for patients with cochlear implants (CIs) when tested in quiet are relatively high. However, sentence understanding scores for patients with CIs plummet with the addition of noise. PURPOSE:To assess, for patients with CIs (MED-EL), (1) the value to speech understanding of two new, noise-reducing microphone settings and (2) the effect of the microphone settings on sound source localization. RESEARCH DESIGN:Single-subject, repeated measures design. For tests of speech understanding, repeated measures on (1) number of CIs (one, two), (2) microphone type (omni, natural, adaptive beamformer), and (3) type of noise (restaurant, cocktail party). For sound source localization, repeated measures on type of signal (low-pass [LP], high-pass [HP], broadband noise). STUDY SAMPLE:Ten listeners, ranging in age from 48 to 83 yr (mean = 57 yr), participated in this prospective study. INTERVENTION:Speech understanding was assessed in two noise environments using monaural and bilateral CIs fit with three microphone types. Sound source localization was assessed using three microphone types. DATA COLLECTION AND ANALYSIS:In Experiment 1, sentence understanding scores (in terms of percent words correct) were obtained in quiet and in noise. For each patient, noise was first added to the signal to drive performance off of the ceiling in the bilateral CI-omni microphone condition. The other conditions were then administered at that signal-to-noise ratio in quasi-random order. In Experiment 2, sound source localization accuracy was assessed for three signal types using a 13-loudspeaker array over a 180° arc. The dependent measure was root-mean-score error. RESULTS:Both the natural and adaptive microphone settings significantly improved speech understanding in the two noise environments. The magnitude of the improvement varied between 16 and 19 percentage points for tests conducted in the restaurant environment and between 19 and 36 percentage points for tests conducted in the cocktail party environment. In the restaurant and cocktail party environments, both the natural and adaptive settings, when implemented on a single CI, allowed scores that were as good as, or better, than scores in the bilateral omni test condition. Sound source localization accuracy was unaltered by either the natural or adaptive settings for LP, HP, or wideband noise stimuli. CONCLUSION:The data support the use of the natural microphone setting as a default setting. The natural setting (1) provides better speech understanding in noise than the omni setting, (2) does not impair sound source localization, and (3) retains low-frequency sensitivity to signals from the rear. Moreover, bilateral CIs equipped with adaptive beamforming technology can engender speech understanding scores in noise that fall only a little short of scores for a single CI in quiet.
journal_name
J Am Acad Audioljournal_title
Journal of the American Academy of Audiologyauthors
Dorman MF,Natale S,Loiselle Ldoi
10.3766/jaaa.16126subject
Has Abstractpub_date
2018-03-01 00:00:00pages
197-205issue
3eissn
1050-0545issn
2157-3107journal_volume
29pub_type
杂志文章abstract::Loudness discomfort levels (LDLs) were measured in dB HL and SPL at discrete frequencies between 500 to 4000 Hz on 31 hearing-impaired ears using TDH-50P and ER-3A earphones. The results revealed no significant differences in the measured sound pressure level (SPL) between the two earphones at all test frequencies. Ho...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1997-02-01 00:00:00
abstract::Auditory brainstem responses were measured in response to 1000-Hz tone bursts from 115 patients with sensorineural hearing loss, presumably of cochlear origin. Mean wave V latencies and variability were comparable to those observed in normal hearing subjects for similar stimuli. The range of interaural differences in ...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1992-05-01 00:00:00
abstract::This study examined the influence of technology, demographic factors, and prefitting expectations, attitudes, and adjustment to hearing loss on hearing aid outcome. Clients obtaining new hearing aids completed questionnaires measuring personal adjustment to hearing loss, expectations of and attitudes toward hearing ai...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:2001-02-01 00:00:00
abstract::This study describes audiologic methodology and results for evaluating potential ototoxicity in a phase I clinical trial of a new glycopeptide. This study was conducted under good clinical practices, which are regulated by the US Food and Drug Administration (FDA) (21 Code of Federal Regulations), and input from the F...
journal_title:Journal of the American Academy of Audiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND:Although audiologists have been using support personnel for over 45 yr, controversy and variability continue with respect to the entry-level education, training methods, and scope of practice. PURPOSE:As part of a larger clinical practices survey, this report focuses on use of audiology assistants (AAs) for...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,多中心研究
doi:10.3766/jaaa.17004
更新日期:2018-05-01 00:00:00
abstract::This report reviews research from the 1930s to the present that has extended our understanding by investigating the characteristics of tinnitus that can be studied using psychoacoustic techniques. Studies of tinnitus masking and residual inhibition began in the 1970s, leading to the therapeutic use of tinnitus masking...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,评审
doi:
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:Motivational interviewing (MI) has been used in consultation settings to motivate hearing aid users to increase hearing aid usage. However, the effect of MI on those who use their hearing aids only rarely or not at all has not been explored. PURPOSE:The aims of this pilot study were to evaluate the effect o...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.16184
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Electrocochleography (ECochG) is the measurement of stimulus-related cochlear potentials and the compound action potential (AP). Its primary clinical application is with the assessment of inner ear disorders. There are few studies examining the variability of ECochG measures. PURPOSE:The objective of the st...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.17081
更新日期:2019-01-01 00:00:00
abstract::Probe-microphone measurements are typically made with behind-the-ear (BTE) and in-the-ear (ITE) hearing aids with the loudspeaker located at 0-degrees or 45-degrees azimuth at head level and the reference microphone positioned on the head near the hearing aid microphone. With body-worn instruments, these conditions ma...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1994-03-01 00:00:00
abstract::Wideband middle ear power (WMEP) measurement is a method of middle ear analysis that may provide improved diagnostic capability over single-frequency tympanometry. However, normative data, information about test-retest reliability, and results in clinical disorders are needed for clinical application. Normative and re...
journal_title:Journal of the American Academy of Audiology
pub_type: 临床试验,杂志文章
doi:10.3766/jaaa.19.4.4
更新日期:2008-04-01 00:00:00
abstract:BACKGROUND:Wideband reflectance (WBR) provides important information about middle ear function and can explain variations in how the middle ear receives, absorbs, and transmits sound energy across a wide range of frequencies. However, as of yet, few normative studies have been published to guide clinicians in the pract...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.19.5.4
更新日期:2008-05-01 00:00:00
abstract::Tympanometric measures were obtained in 1240 adults (2147 ears) ranging in age from 48 to 90 years. All subjects reported a negative history of otic disease, passed an otoscopic examination, and did not present a significant air-bone gap based on pure-tone audiometry. Relative to findings for younger adults, tympanome...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1996-08-01 00:00:00
abstract:PURPOSE:To study the effect of noise on speech rate judgment and signal-to-noise ratio threshold (SNR50) at different speech rates (slow, preferred, and fast). RESEARCH DESIGN:Speech rate judgment and SNR50 tasks were completed in a normal-hearing condition and a simulated hearing-loss condition. STUDY SAMPLE:Twenty-...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.20.1.3
更新日期:2009-01-01 00:00:00
abstract::A 48-item questionnaire was administered to 100 older adults to determine their expectations regarding hearing aid use. The sample consisted of volunteers from a variety of senior citizen organizations and ranged in age from 55 to 92 years. Only individuals who reported no prior hearing aid usage were included in the ...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1991-07-01 00:00:00
abstract::Recent advances in endoscopic optics and miniature video camera technology have made video otoscopy (VO) accessible to audiologists in a practical way. Seven categories of VO applications are presented with clinical examples: (1) general examination of the earcanal and tympanic membrane, (2) physician communication/te...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND:Prior to undergoing vestibular function testing, it is not uncommon for clinicians to request that patients abstain from caffeine 24 hr prior to the administration of the tests. However, there is little evidence that caffeine affects vestibular function. PURPOSE:To evaluate whether the results from two test...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.25.3.5
更新日期:2014-03-01 00:00:00
abstract::The aim of this research was to study the effects of several stimulus parameters on adaptation characteristics of the auditory brainstem response (ABR). Recordings were obtained from normal hearing adults to separate trains of 5 rarefaction and 5 condensation clicks with interclick intervals of 10 msec and intertrain ...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
abstract::The masking-level difference (MLD) was investigated in children aged 3.9 to 9.5 years and in an adult control group in order to examine the development of the MLD with age. A three-alternative forced-choice adaptive tracking procedure was used for all listeners. MLDs were determined for a 500-Hz pure-tone signal prese...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1990-04-01 00:00:00
abstract::Previous research has reported reduced otoacoustic emission amplitude as a function of age. In each study, however, interpretation of findings was confounded by age-related hearing loss. The present study was designed to re-evaluate the contribution of age and peripheral hearing loss on the prevalence and amplitude of...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract:PURPOSE:To determine if one-octave multitone (MT) stimuli increase the amplitude of cortical auditory-evoked potentials (CAEPs) in individuals with a hearing loss when compared to standard pure-tone (PT) stimuli and narrow-band noise (NBN). RESEARCH DESIGN:CAEPs were obtained from 16 hearing-impaired adults in respons...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.15068
更新日期:2016-05-01 00:00:00
abstract:BACKGROUND:Although cochlear implant patients are achieving increasingly higher levels of performance, speech perception in noise continues to be problematic. The newest generations of implant speech processors are equipped with preprocessing and/or external accessories that are purported to improve listening in noise....
journal_title:Journal of the American Academy of Audiology
pub_type: 临床试验,杂志文章
doi:10.3766/jaaa.21.7.3
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:Production effect (PE) is a memory phenomenon referring to better memory for produced (vocalized) than for non-produced (silently read) items. Reading aloud was found to improve verbal memory for normal-hearing individuals, as well as for cochlear implant users, studying visually and aurally presented materi...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.17030
更新日期:2018-11-01 00:00:00
abstract::This is the second in a series of two papers on masking. The objective of these papers is to develop a masking protocol that provides valid measures of threshold and is, in general, faster than the plateau method. In the first paper, a masking method was presented that can replace the traditional plateau method in mos...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.15.1.5
更新日期:2004-01-01 00:00:00
abstract::This multisite investigation assessed subjective, behavioral, and objective balance function in 30 blast survivors. Subjects with vertigo, dizziness, or imbalance were screened (n = 6) or evaluated (n = 27) during 1 year. Tests included a questionnaire, electronystagmography (ENG), and computerized dynamic posturograp...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1999-10-01 00:00:00
abstract::Crystal Device Integrity Testing System (CITS), the first commercially available testing system of its type, allows rapid assessment of cochlear implant function by measuring averaged electrode voltages-the scalp-recorded fields generated by electrode currents. We describe our experience performing routine integrity t...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.17.10.4
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND:Hearing aids today often provide both directional (DIR) and omnidirectional (OMNI) processing options with the currently active mode selected automatically by the device. The most common approach to automatic switching involves "acoustic scene analysis" where estimates of various acoustic properties of the l...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.19.9.6
更新日期:2008-10-01 00:00:00
abstract::Often ABR threshold testing employs clicks to assess high-frequency hearing, and low-frequency tone bursts to assess low-frequency sensitivity. While a maturation effect has been shown for click stimuli, similar data are lacking for low-frequency toneburst stimuli. Thus, 305 infants ranging in conceptional age (CA) fr...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.3766/jaaa.16.2.6
更新日期:2005-02-01 00:00:00
abstract:BACKGROUND: Ecological momentary assessment (EMA) is a methodology involving repeated surveys to collect in-situ self-reports that describe respondents' current or recent experiences. Audiology literature comparing in-situ and retrospective self-reports is scarce. PURPOSE: To compare the sensitivity of in-situ and ret...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:10.1055/s-0040-1719133
更新日期:2020-12-15 00:00:00
abstract::In a clinical experiment, it was found that there is a high correlation between the compliance measured by tympanometry and the minimum size of the earmold vent, which just solves the client's occlusion problem related to his/her own voice when using a hearing aid. For ears with sensorineural hearing losses, complianc...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Draft American National Standard "Evaluating the Effectiveness of Hearing Conservation Programs" identifies potentially important links between audiometric threshold variability outcomes and occupational hearing conservation program (HCP) practices. Unacceptable threshold variability in annual audiograms may identify ...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1995-11-01 00:00:00