Abstract:
BACKGROUND:Current fitting guidelines from the American Academy of Audiology (Academy) support the use of objective electroacoustic measures and behavioral testing when fitting frequency modulation (FM) systems to hearing aids. However, only behavioral testing is recommended when fitting FM systems to individuals with cochlear implants (CIs) because a protocol for conducting electroacoustic measures has yet to be developed for this population. PURPOSE:The purpose of this study was to propose and examine the validity of a newly developed, objective, electroacoustic test protocol for fitting electrically and electromagnetically coupled FM systems to CI sound processors. RESEARCH DESIGN:Electroacoustic measures were conducted and replicated in the laboratory with three contemporary CI sound processors and several FM system combinations. A repeated measures design was used with four participants to examine the validity of the proposed electroacoustic test protocol. STUDY SAMPLE:Three contemporary CI sound processors were tested electroacoustically in the laboratory while coupled to combinations of five FM receivers and four FM transmitters. Two adolescents using Cochlear Nucleus 5 sound processors and two adult participants using MED-EL OPUS 2 sound processors completed behavioral and subjective measures. DATA COLLECTION AND ANALYSIS:Using current hearing aid practice guidelines from the Academy, electroacoustic measurements were conducted in the laboratory with the CIs and FM systems to determine transparency, where equivalent inputs to the CI and FM microphones result in equivalent outputs. Using a hearing aid analyzer, acoustic output from the CI sound processor was measured via monitor earphones and specialized equipment from CI manufacturers with 65 dB SPL speech inputs (1) to the sound processor and (2) to the FM transmitter microphones. The FM gain or volume was adjusted to attempt to achieve transparency for outputs from the two input devices. The four participants completed some or all of the following measures: speech recognition in noise without and with two FM systems in a classroom, loudness ratings without and with two FM systems measures in a quiet condition in a classroom, and questionnaires. RESULTS:Transparency was achieved for most CI and FM combinations, but most systems required adjustments to FM gain or volume relative to the manufacturer default setting. Despite adjustments to the systems, transparency was not attainable for some FM receiver and transmitter combinations. Behavioral testing in four participants provided preliminary support to the proposed electroacoustic test protocol. CONCLUSIONS:Valid and reliable electroacoustic test measures may be feasible with CIs coupled to FM systems with specialized equipment from the CI manufacturer. Advances in equipment available for electroacoustic testing with these devices as well as additional research will lend further support to this objective approach to fitting FM systems to CIs.
journal_name
J Am Acad Audioljournal_title
Journal of the American Academy of Audiologyauthors
Schafer EC,Musgrave E,Momin S,Sandrock C,Romine Ddoi
10.3766/jaaa.24.10.6subject
Has Abstractpub_date
2013-11-01 00:00:00pages
941-54issue
10eissn
1050-0545issn
2157-3107journal_volume
24pub_type
杂志文章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
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更新日期:2009-01-01 00:00:00
abstract::In studies to date, the effectiveness of the directional microphone has been investigated independently of the signal processing scheme used in the hearing aid. In addition, the number and placement of the background noise speakers can create an advantage for a particular polar pattern (i.e., cardioid, supercardioid, ...
journal_title:Journal of the American Academy of Audiology
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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
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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
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更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:The acceptable noise level (ANL) serves to accurately predict the listener's likelihood of success with amplification. It has been proposed as a pre-hearing aid fitting protocol for hearing aid selection and counseling purposes. The ANL is a subjective measure of the listener's ability to accept background n...
journal_title:Journal of the American Academy of Audiology
pub_type: 临床试验,杂志文章
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更新日期:2012-07-01 00:00:00
abstract::A 52-year-old male was evaluated by the authors after initially reporting fullness in his left ear while traveling on an airplane. A unique feature of the patient's complaint was the development of severe bilateral hyperacusis (loudness discomfort levels of between 20-34 dB HL) in spite of the fact that the hearing lo...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:A deficit in the processing of auditory information may underlie problems in understanding speech in the presence of background noise, degraded speech, and in following spoken instructions. Children with auditory processing disorders are challenged in the classroom because of ambient noise levels and maybe a...
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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
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更新日期:2008-04-01 00:00:00
abstract:BACKGROUND:The scalp-recorded frequency-following response (FFR) has been widely accepted in assessing the brain's processing of speech stimuli for people who speak tonal and nontonal languages. Characteristics of scalp-recorded FFRs with increasing number of sweeps have been delineated through the use of an exponentia...
journal_title:Journal of the American Academy of Audiology
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journal_title:Journal of the American Academy of Audiology
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journal_title:Journal of the American Academy of Audiology
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doi:
更新日期:2002-06-01 00:00:00
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doi:10.3766/jaaa.25.10.6
更新日期:2014-11-01 00:00:00
abstract::This paper discusses trends and issues in selecting amplification for new, mainly nonlinear, types of hearing aids. Some-concerns are that nonvalidated prescription formulae may proliferate; that, through concentration on loudness normalization, alternative rationales are not being evaluated; and that most new fitting...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,评审
doi:
更新日期:1996-12-01 00:00:00
abstract::The auditory brainstem response (ABR) recorded while wearing a hearing aid may supply supplemental information about the benefit and appropriateness of the hearing aid for certain infants. The purposes of this study were (1) to determine the effects of different output limiting circuits on the acoustics of tone-pip st...
journal_title:Journal of the American Academy of Audiology
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doi:
更新日期:1999-04-01 00:00:00
abstract:BACKGROUND:Patients with cochlear malformations were long considered poor candidates for cochlear implantation (CI), and surgical approaches different than the standard facial recess approach were used to access the inner ear. There is no previous long-term follow-up of a patient with significantly malformed inner ear ...
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更新日期:2016-11-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
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更新日期:2017-06-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,评审
doi:10.3766/jaaa.21.3.4
更新日期:2010-03-01 00:00:00
abstract::The present investigation was conducted to help determine whether source activity of the direct recorded N1 response differed from that of the gamma band response (GBR). Auditory evoked cortical potential data from two patients with intractable epilepsy undergoing prolonged video EEG monitoring after implantation of s...
journal_title:Journal of the American Academy of Audiology
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doi:
更新日期:1998-04-01 00:00:00
abstract::Turner syndrome is among the more common but less familiar syndromes that include sensorineural hearing loss and middle ear disease. This article provides a review of the syndrome, an illustrative case, and a review of specific issues relevant to audiologic management of patients with Turner syndrome. ...
journal_title:Journal of the American Academy of Audiology
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doi:
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journal_title:Journal of the American Academy of Audiology
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journal_title:Journal of the American Academy of Audiology
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doi:
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:2010-02-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:1994-09-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:2001-07-01 00:00:00
abstract::The case reported here, a 26-year-old woman, has a bilaterally symmetric, severe-to-profound, sensorineural hearing loss, acquired early in life. Phoneme recognition scores were essentially symmetric at the onset of the investigation. She was basically monaurally aided from age 4 to age 24, at which time a loss of fun...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:1993-09-01 00:00:00
abstract::Stickler's syndrome is an autosomal dominant hereditary condition that presents with pathognomonic facial features, dysplasia, myopia and auditory deficits. This paper describes the auditory history of a family with Stickler's syndrome. Given the expressive variability, a complete audiologic and otologic evaluation is...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::The effects of stimulus rate and gender on the auditory middle latency response (AMLR) waveforms were examined in 20 young adult male and female subjects. Four different repetition rates were presented to subjects (1.1/sec, 4.1/sec, 7.7/ sec, and 11.3/sec). Stimulus repetition rate had a significant effect on Pa laten...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:2002-03-01 00:00:00
abstract:BACKGROUND:Both wide dynamic range compression (WDRC) and ChannelFree (CF) processing strategies in hearing aids were designed to improve listener comfort and consonant identification, yet few studies have actually compared them. PURPOSE:To determine whether CF processing provides equal or better consonant identificat...
journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,随机对照试验
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更新日期:2015-07-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章,多中心研究
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更新日期:2006-03-01 00:00:00
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journal_title:Journal of the American Academy of Audiology
pub_type: 杂志文章
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更新日期:2020-02-01 00:00:00