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Hearing Disorders: HELP
Articles by Danielle Glista
Based on 6 articles published since 2010
(Why 6 articles?)
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Between 2010 and 2020, Danielle Glista wrote the following 6 articles about Hearing Disorders.
 
+ Citations + Abstracts
1 Article The Effect of Adaptive Nonlinear Frequency Compression on Phoneme Perception. 2017

Glista, Danielle / Hawkins, Marianne / Bohnert, Andrea / Rehmann, Julia / Wolfe, Jace / Scollie, Susan. ·Child Amplification Laboratory, National Centre for Audiology, University of Western Ontario, London, Canada. · Department of Otorhinolaryngology, Division of Communication Disorders, University Medicine of the Johannes Gutenberg University, Mainz, Germany. · Phonak AG, Staefa, Switzerland. · Hearts for Hearing, Oklahoma City. ·Am J Audiol · Pubmed #29121162.

ABSTRACT: Purpose: This study implemented a fitting method, developed for use with frequency lowering hearing aids, across multiple testing sites, participants, and hearing aid conditions to evaluate speech perception with a novel type of frequency lowering. Method: A total of 8 participants, including children and young adults, participated in real-world hearing aid trials. A blinded crossover design, including posttrial withdrawal testing, was used to assess aided phoneme perception. The hearing aid conditions included adaptive nonlinear frequency compression (NFC), static NFC, and conventional processing. Results: Enabling either adaptive NFC or static NFC improved group-level detection and recognition results for some high-frequency phonemes, when compared with conventional processing. Mean results for the distinction component of the Phoneme Perception Test (Schmitt, Winkler, Boretzki, & Holube, 2016) were similar to those obtained with conventional processing. Conclusions: Findings suggest that both types of NFC tested in this study provided a similar amount of speech perception benefit, when compared with group-level performance with conventional hearing aid technology. Individual-level results are presented with discussion around patterns of results that differ from the group average.

2 Article Fitting Frequency-Lowering Signal Processing Applying the American Academy of Audiology Pediatric Amplification Guideline: Updates and Protocols. 2016

Scollie, Susan / Glista, Danielle / Seto, Julie / Dunn, Andrea / Schuett, Brittany / Hawkins, Marianne / Pourmand, Nazanin / Parsa, Vijay. ·National Centre for Audiology, Faculty of Health Sciences, Western University, London, Ontario, Canada. · Microsoft Corporation, Redmond, WA. · Dunn Audiology, London, Ontario, Canada. · Cambridge Audiology, Cambridge, Ontario, Canada. · Knowles Electronics, Valencia, CA. ·J Am Acad Audiol · Pubmed #26967363.

ABSTRACT: BACKGROUND: Although guidelines for fitting hearing aids for children are well developed and have strong basis in evidence, specific protocols for fitting and verifying technologies can supplement such guidelines. One such technology is frequency-lowering signal processing. Children require access to a broad bandwidth of speech to detect and use all phonemes including female /s/. When access through conventional amplification is not possible, the use of frequency-lowering signal processing may be considered as a means to overcome limitations. Fitting and verification protocols are needed to better define candidacy determination and options for assessing and fine tuning frequency-lowering signal processing for individuals. PURPOSE: This work aims to (1) describe a set of calibrated phonemes that can be used to characterize the variation in different brands of frequency-lowering processors in hearing aids and the verification with these signals and (2) determine whether verification with these signal are predictive of perceptual changes associated with changes in the strength of frequency-lowering signal processing. Finally, we aimed to develop a fitting protocol for use in pediatric clinical practice. STUDY SAMPLE: Study 1 used a sample of six hearing aids spanning four types of frequency lowering algorithms for an electroacoustic evaluation. Study 2 included 21 adults who had hearing loss (mean age 66 yr). DATA COLLECTION AND ANALYSIS: Simulated fricatives were designed to mimic the level and frequency shape of female fricatives extracted from two sources of speech. These signals were used to verify the frequency-lowering effects of four distinct types of frequency-lowering signal processors available in commercial hearing aids, and verification measures were compared to extracted fricatives made in a reference system. In a second study, the simulated fricatives were used within a probe microphone measurement system to verify a wide range of frequency compression settings in a commercial hearing aid, and 27 adult listeners were tested at each setting. The relation between the hearing aid verification measures and the listener's ability to detect and discriminate between fricatives was examined. RESULTS: Verification measures made with the simulated fricatives agreed to within 4 dB, on average, and tended to mimic the frequency response shape of fricatives presented in a running speech context. Some processors showed a greater aided response level for fricatives in running speech than fricatives presented in isolation. Results with listeners indicated that verified settings that provided a positive sensation level of /s/ and that maximized the frequency difference between /s/ and /∫/ tended to have the best performance. CONCLUSIONS: Frequency-lowering signal processors have measureable effects on the high-frequency fricative content of speech, particularly female /s/. It is possible to measure these effects either with a simple strategy that presents an isolated simulated fricative and measures the aided frequency response or with a more complex system that extracts fricatives from running speech. For some processors, a more accurate result may be achieved with a running speech system. In listeners, the aided frequency location and sensation level of fricatives may be helpful in predicting whether a specific hearing aid fitting, with or without frequency-lowering, will support access to the fricatives of speech.

3 Article The Ling 6(HL) test: typical pediatric performance data and clinical use evaluation. 2014

Glista, Danielle / Scollie, Susan / Moodie, Sheila / Easwar, Vijayalakshmi / Anonymous431178. ·National Centre for Audiology and School of Communications Sciences and Disorders, Western University, London, ON Canada. · National Centre for Audiology and School of Health and Rehabilitation Sciences, Western University, London, ON Canada. ·J Am Acad Audiol · Pubmed #25514453.

ABSTRACT: BACKGROUND: The Ling 6(HL) test offers a calibrated version of naturally produced speech sounds in dB HL for evaluation of detection thresholds. Aided performance has been previously characterized in adults. PURPOSE: The purpose of this work was to evaluate and refine the Ling 6(HL) test for use in pediatric hearing aid outcome measurement. RESEARCH DESIGN: This work is presented across two studies incorporating an integrated knowledge translation approach in the characterization of normative and typical performance, and in the evaluation of clinical feasibility, utility, acceptability, and implementation. STUDY SAMPLE: A total of 57 children, 28 normally hearing and 29 with binaural sensorineural hearing loss, were included in Study 1. Children wore their own hearing aids fitted using Desired Sensation Level v5.0. Nine clinicians from The Network of Pediatric Audiologists participated in Study 2. DATA COLLECTION AND ANALYSIS: A CD-based test format was used in the collection of unaided and aided detection thresholds in laboratory and clinical settings; thresholds were measured clinically as part of routine clinical care. Confidence intervals were derived to characterize normal performance and typical aided performance according to hearing loss severity. Unaided-aided performance was analyzed using a repeated-measures analysis of variance. The audiologists completed an online questionnaire evaluating the quality, feasibility/executability, utility/comparative value/relative advantage, acceptability/applicability, and interpretability, in addition to recommendation and general comments sections. RESULTS: Ling 6(HL) thresholds were reliably measured with children 3-18 yr old. Normative and typical performance ranges were translated into a scoring tool for use in pediatric outcome measurement. In general, questionnaire respondents generally agreed that the Ling 6(HL) test was a high-quality outcome evaluation tool that can be implemented successfully in clinical settings. CONCLUSIONS: By actively collaborating with pediatric audiologists and using an integrated knowledge translation framework, this work supported the creation of an evidence-based clinical tool that has the potential to be implemented in, and useful to, clinical practice. More research is needed to characterize performance in alternative listening conditions to facilitate use with infants, for example. Future efforts focused on monitoring the use of the Ling 6(HL) test in daily clinical practice may help describe whether clinical use has been maintained across time and if any additional adaptations are necessary to facilitate clinical uptake.

4 Article Stimuli and normative data for detection of Ling-6 sounds in hearing level. 2012

Scollie, Susan / Glista, Danielle / Tenhaaf, Julianne / Dunn, Andrea / Malandrino, April / Keene, Kelley / Folkeard, Paula. ·University of Western Ontario, London, Ontario, Canada. scollie@nca.uwo.ca ·Am J Audiol · Pubmed #22846636.

ABSTRACT: PURPOSE: The purpose of this work was to develop and evaluate a calibrated version of the Ling-6 sounds for evaluation of aided detection thresholds. Stimuli were recorded, and data from calibration values in dB HL were developed. Aided performance was characterized in adults and children. METHOD: Stimuli were recorded, prepared, and transferred to a CD for testing. Initial testing was completed on 29 normally hearing young adults to determine typical responses in dB SPL and reliability. Corrections to dB HL were determined for each stimulus. Twenty-seven adults and 5 children with hearing losses were tested. RESULTS: Average normal sound field thresholds were 1 dB HL. Aided thresholds for adults varied with unaided hearing level and were better for low-frequency sounds. Adults and children performed differently, possibly because of greater hearing aid gain for children. CONCLUSIONS: Stimulus preparation and shaping resulted in a recorded, calibrated set of Ling-6 stimuli that provide flat normal thresholds in hearing level for normally hearing listeners. Typical performance ranges may vary with hearing level and prescription. More data are required to fully characterize this trend in the pediatric population.

5 Article Perceptual acclimatization post nonlinear frequency compression hearing aid fitting in older children. 2012

Glista, Danielle / Scollie, Susan / Sulkers, Jacob. ·National Centre for Audiology, University of Western Ontario, London, Ontario, Canada. daglista@nca.uwo.ca ·J Speech Lang Hear Res · Pubmed #22615475.

ABSTRACT: PURPOSE: In this study, the authors evaluated the effect of frequency compression hearing aids on speech perception ability and the time course and magnitude of acclimatization-related changes. METHOD: Participants included children ages 11-18 years. Speech perception ability was evaluated over well-controlled baseline, treatment, and withdrawal study phases. Study-worn hearing aids were individually fitted to all participants. The authors evaluated speech perception ability using outcomes of speech detection (/s/ and /[symbol in text]/ sounds), /s-[symbol in text]/ discrimination, and plural and consonant recognition. RESULTS: Indices of change were discussed on a case-by-case basis across all study phases. Significant treatment effects were measured for all cases, on at least one measure, with some listeners displaying significant acclimatization trends following a trial of frequency compression. CONCLUSION: Findings suggest that frequency compression provided varying outcomes, both in benefit and acclimatization, across listeners. For some, a period of acclimatization was necessary before change could be measured. For others, performance remained stable over the time course under evaluation, suggesting that some but not all children will experience improved speech recognition ability after a period of frequency compression hearing aid use.

6 Article Development and evaluation of an English language measure of detection of word-final plurality markers: the University of Western Ontario Plurals Test. 2012

Glista, Danielle / Scollie, Susan. ·The University of Western Ontario, Canada. daglista@nca.uwo.ca ·Am J Audiol · Pubmed #22411713.

ABSTRACT: PURPOSE: This article describes the development and evaluation of The University of Western Ontario (UWO) Plurals Test, which is an English language measure of detection of the word-final fricative cue for plurality. METHOD: Normative data are provided for 26 listeners with normal hearing and 24 listeners with hearing impairment (children and adults), as are evaluations of the acoustical properties of the stimuli, the test's test-retest reliability, and the test's sensitivity to changes in hearing aid signal processing (e.g., nonlinear frequency compression). RESULTS: Results indicate reliable, repeated outcome measurement at the level of the individual. When compared to a global measure of real-world listening preference, the UWO Plurals Test was found to be somewhat sensitive to the effects of changes in hearing aid signal processing. CONCLUSION: Findings suggest potential use of the UWO Plurals Test to evaluate aided and unaided ability of listeners between the ages of 6 and 81 years to detect the word-final fricatives /s/ and /z/ as they occur in English plural nouns.