A Note on Acoustic Hearing Aids

1977 ◽  
Vol 11 (3) ◽  
pp. 75-76 ◽  
Author(s):  
B. C. Grover
Keyword(s):  
Hearing Aids ◽  
Acoustic Hearing

scholarly journals Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dong Ho Shin ◽  
Jong Hoon Kim ◽  
Peter Gottlieb ◽  
Yona Vaisbuch ◽  
Sunil Puria ◽  
...  
Keyword(s):  
Middle Ear ◽  
Hearing Aids ◽  
Round Window ◽  
Standard Of Care ◽  
Acoustic Hearing ◽  
Middle Ear Implants ◽  
Human Cadavers ◽  
Limited Frequency ◽  
Output Characteristics ◽  
Temporal Bones

AbstractAcoustic hearing aids generate amplified sound in the ear canal, and they are the standard of care for patients with mild to moderate sensorineural hearing loss. However, because of their limited frequency bandwidth, gain, and feedback, there is substantial room for improvement. Active middle ear implants, which directly vibrate the middle ear and cochlea, are an alternative approach to conventional acoustic hearing aids. They provide an opportunity to improve sound quality and speech understanding with amplification rehabilitation. For floating-mass type and direct-rod type (DRT) middle ear transducers, a differential floating-mass transducer (DFMT) and a tri-coil bellows transducer (TCBT), respectively, were fabricated to measure the output characteristics in four human temporal bones. Both were fabricated to have similar output forces per unit input and were placed in four human temporal bones to measure their output performances. The TCBT resulted in higher output than did the DFMT throughout the audible frequency range, and the output was more prominent at lower frequency ranges. In this study, we showed that DRT was a more effective method for round window stimulation. Because of its frequency characteristics and vibration efficiency, this implantation method can be utilized as a driving solution for middle ear implants.

Audiological Results Using Single-channel Intracochlear Implant, Vibrotactile Aid or Acoustic Hearing Aids

1989 ◽  
Vol 108 (3-4) ◽  
pp. 184-189 ◽  
Author(s):  
Heikki Rihkanen ◽  
Tapani Jauhiainen ◽  
Helena Linkola ◽  
Tauno Palva
Keyword(s):  
Hearing Aids ◽  
Single Channel ◽  
Acoustic Hearing

The Use of Frequency Compression by Cochlear Implant Recipients with Postoperative Acoustic Hearing

2010 ◽  
Vol 21 (06) ◽  
pp. 380-389 ◽  
Author(s):  
Hugh McDermott ◽  
Katherine Henshall
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Hearing Aids ◽  
Repeated Measures ◽  
Signal To Noise Ratio ◽  
Speech Understanding ◽  
Closed Set ◽  
Frequency Compression ◽  
Acoustic Hearing ◽  
Perceptual Performance

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 hearing aid (HA) with a CI can often improve speech understanding in noise. Purpose: To determine whether the application of frequency compression in an HA would provide perceptual benefits to CI recipients with usable acoustic hearing, either when used in combination with the CI or when the HA was used by itself. Research Design: A repeated-measures experimental design was used to evaluate the effects on speech perception of using a CI either alone or simultaneously with an HA that had frequency compression either enabled or disabled. Study Sample: Eight adult CI recipients who were successful users of acoustic hearing aids in their nonimplanted ears participated as subjects. Intervention: The speech perception of each subject was assessed in seven conditions. These required each subject to listen with (1) their own HA alone; (2) the Phonak Naida HA with frequency compression (SoundRecover) enabled; (3) the Naida with SoundRecover disabled; (4) their CI alone; (5) their CI and their own HA; (6) their CI and the Naida with SoundRecover enabled; and (7) their CI and the Naida with SoundRecover disabled. Test sessions were scheduled over a period of about 10 wk. During part of that time, the subjects were asked to use the Phonak Naida HA with their CIs in place of their own HAs. Data Collection and Analysis: The speech perception tests included measures of consonant identification from a closed set of 12 items presented in quiet, and measures of sentence understanding in babble noise. The speech materials were presented at an average level of 60 dB SPL from a loudspeaker. Results: Speech perception was better, on average, in all conditions that included use of the CI in comparison with any condition in which only an HA was used. For example, consonant recognition improved by approximately 50 percentage points, on average, between the HA-alone listening conditions and the CI-alone condition. There were no statistically significant score differences between conditions with SoundRecover enabled and disabled. There was a small but significant improvement in the average signal-to-noise ratio (SNR) required to understand 50% of the words in the sentences presented in noise when an HA was used simultaneously with the CI. Conclusions: Although each of these CI users readily accepted the Phonak Naida HA with SoundRecover frequency compression, no benefits related specifically to the use of SoundRecover were found in the particular tests of speech understanding applied in this study. The relatively high levels of perceptual performance attained by these subjects with use of a CI by itself are consistent with the finding that the addition of an HA provided little further benefit. However, the use of an HA with the CI did provide better performance than the CI alone for understanding sentences in noise.

Comparing Light-Driven Contact Hearing Aids with Acoustic Hearing Aids: Data and Clinical Tips

2020 ◽  
Vol 25 (5) ◽  
pp. 283-290
Author(s):  
Jack Shohet ◽  
Jacqueline Bibee ◽  
Joni Doherty ◽  
Cheryl Tanita ◽  
Gina Patzkowski ◽  
...  
Keyword(s):  
Hearing Aids ◽  
High Frequency ◽  
Sound Quality ◽  
Outcome Data ◽  
Care Practice ◽  
Health Care Practice ◽  
Return Rates ◽  
Group Data ◽  
Acoustic Hearing

Introduction: Contact hearing aids (CHA) offer potential advantages over conventional acoustic hearing aids (AHA) in terms of sound quality, reduced occlusion, and increased high-frequency gain. This study evaluates objective and subjective outcome data for CHA compared to AHA. Methods: Clinical outcome data were retrospectively reviewed for patients wearing CHA. Individual and group data were analyzed and then compared to unaided and AHA data. Adverse effects, device complaints, and clinical utility were documented throughout the device fitting and follow-up process. Results: CHA outcomes were better than unaided hearing and AHA for all patients completing the 3-month CHA trial period (45%). However, CHA return rate was high (55%), most often due to device repair and fit issues. Two patients returned the devices due to poor hearing benefit, though both were off-label audiometric candidates. Significantly more clinical time was required from both audiologists and otolaryngologists to successfully fit and maintain maximum device benefit. Conclusions: For proper audiometric and otologic candidates, this light-driven CHA can offer significant improvements in high-frequency sound fidelity, word recognition, and sound quality compared to AHA technology. Administering questionnaires was helpful in illuminating real-world improvements. Device fit, alignment, and quality control issues are improving, though still contributing to high device return rates at this time. Operational factors should be considered when incorporating CHA into a hearing health care practice.

scholarly journals Towards Decoding Selective Attention Through Cochlear Implant Electrodes as Sensors in Subjects with Contralateral Acoustic Hearing

2021 ◽  
Author(s):  
Nina Aldag ◽  
Andreas Büchner ◽  
Thomas Lenarz ◽  
Waldo Nogueira
Keyword(s):  
Selective Attention ◽  
Hearing Aids ◽  
Auditory Evoked Potentials ◽  
Single Channel ◽  
Chance Level ◽  
Auditory Selective Attention ◽  
Scalp Eeg ◽  
Acoustic Hearing ◽  
Study Population ◽  
Cortical Auditory Evoked Potentials

Objectives: Focusing attention on one speaker in a situation with multiple background speakers or noise is referred to as auditory selective attention. Decoding selective attention is an interesting line of research with respect to future brain-guided hearing aids or cochlear implants (CIs) that are designed to adaptively adjust sound processing through cortical feedback loops. This study investigates the feasibility of using the electrodes and backward telemetry of a CI to record electroencephalography (EEG). Approach: The study population included 6 normal-hearing (NH) listeners and 5 CI users with contralateral acoustic hearing. Cortical auditory evoked potentials (CAEP) and selective attention were recorded using a state-of-the-art high-density scalp EEG and, in the case of CI users, also using two CI electrodes as sensors in combination with the backward telemetry system of these devices (iEEG). Main results: The peak amplitudes of the CAEPs recorded with iEEG were lower and the latencies were higher than those recorded with scalp EEG. In the selective attention paradigm with multi-channel scalp EEG the mean decoding accuracy across subjects was 92.0 and 92.5% for NH listeners and CI users, respectively. With single-channel scalp EEG the accuracy decreased to 65.6 and to 75.8% for NH listeners and CI users, respectively, and was above chance level in 9 out of 11 subjects. With the single-channel iEEG, the accuracy for CI users decreased to 70% and was above chance level in 3 out of 5 subjects. Significance: This study shows that single-channel EEG is suitable for auditory selective attention decoding, even though it reduces the decoding quality compared to a multi-channel approach. CI-based iEEG can be used for the purpose of recording CAEPs and decoding selective attention. However, the study also points out the need for further technical development for the CI backward telemetry regarding long-term recordings and the optimal sensor positions.

Teachers' Stereotypes of Children Who Wear Hearing Aids

1981 ◽  
Vol 12 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Cletus G. Fisher ◽  
Kenneth Brooks
Keyword(s):  
Elementary School ◽  
School Child ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Social Implications ◽  
Elementary School Child ◽  
Classroom Teachers ◽  
Frequency Of Occurrence ◽  
Service Training

Classroom teachers were asked to list the traits they felt were characteristic of the elementary school child who wears a hearing aid. These listings were evaluated according to the desirability of the traits and were studied regarding frequency of occurrence, desirability, and educational, emotional, and social implications. The results of the groupings are discussed in terms of pre-service and in-service training.

The Hearing Aid Effect in African American and Caucasian Males as Perceived by Female Judges of the Same Race

1999 ◽  
Vol 30 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Mary Davis ◽  
Rhonda Jackson ◽  
Tina Smith ◽  
William Cooper
Keyword(s):  
African American ◽  
Hearing Aids ◽  
Undergraduate Education ◽  
Hearing Aid ◽  
Semantic Differential ◽  
Semantic Differential Scale ◽  
Education Majors ◽  
Female Undergraduate ◽  
Lay Persons ◽  
Males And Females

Prior studies have proven the existence of the "hearing aid effect" when photographs of Caucasian males and females wearing a body aid, a post-auricular aid (behind-the-ear), or no hearing aid were judged by lay persons and professionals. This study was performed to determine if African American and Caucasian males, judged by female members of their own race, were likely to be judged in a similar manner on the basis of appearance, personality, assertiveness, and achievement. Sixty female undergraduate education majors (30 African American; 30 Caucasian) used a semantic differential scale to rate slides of preteen African American and Caucasian males, with and without hearing aids. The results of this study showed that female African American and Caucasian judges rated males of their respective races differently. The hearing aid effect was predominant among the Caucasian judges across the dimensions of appearance, personality, assertiveness, and achievement. In contrast, the African American judges only exhibited a hearing aid effect on the appearance dimension.

A Support Program

1994 ◽  
Vol 25 (2) ◽  
pp. 112-114 ◽  
Author(s):  
Henna Grunblatt ◽  
Lisa Daar
Keyword(s):  
Hearing Aids ◽  
School Counselor ◽  
Support Program ◽  
Educational Audiology ◽  
Part Program ◽  
One To One

A program for providing information to children who are deaf about their deafness and addressing common concerns about deafness is detailed. Developed by a school audiologist and the school counselor, this two-part program is geared for children from 3 years to 15 years of age. The first part is an educational audiology program consisting of varied informational classes conducted by the audiologist. Five topics are addressed in this part of the program, including basic audiology, hearing aids, FM systems, audiograms, and student concerns. The second part of the program consists of individualized counseling. This involves both one-to-one counseling sessions between a student and the school counselor, as well as conjoint sessions conducted—with the student’s permission—by both the audiologist and the school counselor.

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