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Auteur Kim S. Schairer |
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trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Faire une suggestion Affiner la rechercheAutomated Adaptive Wideband Acoustic Reflex Threshold Estimation in Normal-hearing Adults / Kim S. Schairer in Ear and hearing, Vol.43, n°2 (Mars-avril 2022)
Titre : Automated Adaptive Wideband Acoustic Reflex Threshold Estimation in Normal-hearing Adults Type de document : Article Auteurs : Kim S. Schairer ; Daniel B. Putterman ; Douglas H. Keefe ; Dennis F. Fitzpatrick ; Angela C. Garinis ; Elizabeth R. Kolberg ; M. Patrick Feeney Année de publication : 2022 Article en page(s) : p. 370-378 Langues : Anglais (eng) Descripteurs : HE Vinci
Acoustique
Autres descripteurs
Immitance acoustique ; Reflexe de l'oreille moyenne ; Reflexion a large bandeRésumé : Objectives: Acoustic stapedius reflex threshold (ART) tests are included in a standard clinical acoustic immittance test battery as an objective cross-check with behavioral results and to help identify site of lesion. In traditional clinical test batteries, middle-ear admittance of a 226 Hz probe is estimated using ear-canal measurements in the presence of a reflex-activating stimulus. In the wideband (WB) acoustic immittance ART test used in this study, the pure-tone probe is replaced by a WB probe stimulus and changes in absorbed power are estimated using ear-canal measurements in the presence of the activator. The ART is defined as the lowest level at which a criterion change in admittance (clinical) or absorbed power (WB) is observed in the presence of the activator. In the present study, ARTs were obtained in adults with normal hearing using the clinical, manual method and with a new WB automated adaptive threshold detection method. It was hypothesized that the WB test would result in lower ARTs than the clinical test because reflex-related changes in power absorbance could be observed across multiple frequency bands in the WB test compared with a single frequency in the traditional test.
Design: Data were collected in a prospective research design. ARTs were obtained in ipsilateral and contralateral conditions using 500, 1000, 2000 Hz, and broadband noise (BBN) activators on a clinical system and on an experimental WB system. The bandwidth of the BBN activator was 125 to 4000 Hz on the clinical system and 200 to 8000 Hz on the wideband system. ARTs were estimated at both tympanometric peak pressure (TPP) and ambient pressure on the WB system. Data were collected in both ears of 39 adults (21 males) of mean age 47.7 years (range 23-72 years). Differences in ARTs among the three threshold estimation methods (clinical, WB at TPP, WB at ambient) were examined using the general linear model repeated measures test in SPSS. Post-hoc pairwise comparisons were completed with Bonferroni correction for multiple comparisons. Statistical significance was defined as p
Results: ARTs obtained on the WB system at TPP and ambient pressure were significantly lower than obtained on the clinical system. ARTs obtained on the WB system at TPP were significantly higher than at ambient pressure in the 500 and 2000 Hz ipsilateral conditions.
Conclusions: WB automated adaptive ARTs in normal-hearing adults were lower than for clinical methods when measured at TPP and ambient pressure. Lower presentation levels required to estimate ART in the WB test may be more tolerable to patients. Patients with ARTs that are not present at the maximum level of a traditional reflex test may have present ARTs with a WB ART test, which may reduce the need to refer for additional testing for possible retrocochlear involvement. Automation of the test may allow clinicians more time to attend to the other requisite tasks of a hearing evaluation and make the system useful for telehealth applications.Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://ovidsp.ovid.com/ovidweb.cgi?T=J [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=292896
in Ear and hearing > Vol.43, n°2 (Mars-avril 2022) . - p. 370-378[article]
Titre : Automated Adaptive Wideband Acoustic Stapedius Reflex Thresholds in Adults With Normal Hearing and Sensorineural Hearing Loss Type de document : Article Auteurs : M. Patrick Feeney ; Kim S. Schairer ; Daniel B. Putterman ; Angela C. Garinis ; Jay J. Vachhani ; Douglas H. Keefe ; Dennis F. Fitzpatrick ; Elizabeth R. Kolberg Année de publication : 2023 Article en page(s) : p. 740-750 Note générale : DOI: 10.1097/AUD.0000000000001321 Langues : Anglais (eng) Descripteurs : Autres descripteurs
Immitance acoustique ; Reflexe de l'oreille moyenne
HE Vinci
Réflexe stapédien ; Surdité neurosensorielle (SNHL)Résumé : Objectives: This study compared the measurement of the acoustic stapedius reflex threshold (ART) obtained using a traditional method with that obtained using an automated adaptive wideband (AAW) method. Participants included three groups of adults with normal hearing (NH), mild sensorineural hearing loss (SNHL), or moderate SNHL. The purpose of the study was to compare ARTs for the three groups and to determine which method had the best performance in detecting SNHL.
Design: Ipsilateral and contralateral ARTs were obtained using 0.5, 1, and 2 kHz tonal activators, and broadband noise (BBN) activators on a traditional admittance system (Clinical) at tympanometric peak pressures (TPP) and on an experimental wideband system using an AAW method at both ambient pressure and TPP. ART data previously reported for 39 NH adults with a mean age of 47.7 years were compared with data for 25 participants with mild SNHL with a mean age of 63.8 years, and 20 participants with moderate SNHL with a mean age of 65.7 years. Differences in ARTs between the normal-hearing and SNHL groups for the three methods were examined using a General Linear Model Repeated-Measures test. A receiver operating characteristic curve (ROC) analysis was also used to determine the ability of an ART test to detect SNHL.
Results: For the 0.5 kHz activator condition, there were no significant group mean differences in ART between NH and SNHL groups for either ipsilateral or contralateral activator presentation modes for the Clinical or AAW methods. There were significant group mean differences for the 1 and 2 kHz tonal activators and BBN activator for both ipsilateral and contralateral modes with greater differences in ART between groups for the AAW method than the Clinical method. In these conditions, the mean ART was lower for the AAW tests relative to the Clinical test. The greatest difference between groups was for the ipsilateral AAW tests for the comparison of NH with moderate SNHL for the BBN activator. This difference was approximately 20 dB for the AAW tests and 8 dB for the Clinical test. The ROC analysis showed that the area under the ROC curve (AUC) increased with the frequency of the activator stimulus and with the degree of hearing loss and was maximal for the BBN activator for both the AAW and Clinical methods for both ipsilateral and contralateral presentations.
Conclusions: For ipsilateral and contralateral ART tests for activator frequencies above 0.5 kHz and BBN, listeners with SNHL generally had elevated ARTs compared with those with NH. The AAW method resulted in greater differences between SNHL groups and NH than the Clinical method. The AUC for detecting SNHL also increased with activator frequency and degree of hearing loss and was greatest for the BBN activator for the AAW method in both the ambient and TPP conditions. The results are encouraging for the use of an AAW ART method for the assessment of individuals with SNHL.Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://ovidsp.ovid.com/ovidweb.cgi?T=J [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=309030
in Ear and hearing > Vol. 44, n°4 (July-August 2023) . - p. 740-750[article]
Titre : Impact of Effortful Word Recognition on Supportive Neural Systems Measured by Alpha and Theta Power Type de document : Article Auteurs : David B. Ryan ; Mark A. Eckert ; Eric W. Sellers ; Kim S. Schairer ; Matthew McBee ; Marissa Jones ; Sherri L. Smith Année de publication : 2022 Article en page(s) : p. 1549-1562 Note générale : DOI: 10.1097/AUD.0000000000001211 Langues : Anglais (eng) Descripteurs : HE Vinci
Effort d'écoute ; Electroencéphalographie (EEG) ; Rapport signal-bruit (SNRs) (RSB) ; Reconnaissance auditive du motRésumé : Objectives: The goal of this study was to use theta and alpha electroencephalography (EEG) frequency power and self-report measures to examine performance monitoring, cognitive inhibition, and perceived effort required for speech understanding in noise. It was hypothesized that with a linear increase in word recognition task difficulty, there would be a linear increase in listening effort and word recognition performance would decrease in the challenging conditions. In addition, theta and alpha power would have an inverted U-shape across easy to challenging listening conditions. The inverted U-shape would reflect the neural underpinnings of listening effort that cannot be measured by task performance alone.
Design: EEG data were collected in 34 normal-hearing adults (18 to 33 years old) during the Words-In-Noise (WIN) test, which was presented in sound field. EEG frequency data were averaged and analyzed at three frontal channels for theta power (4 to 8 Hz), which is thought to reflect performance monitoring, and three parietal channels for alpha power (8 to 12 Hz), which is thought to reflect cognitive inhibition. A ten-point visual analog scale was administered after each WIN signal-to-noise ratio (SNR) condition to capture self-reported required and invested listening effort (RLE and ILE, respectively). The WIN SNR conditions were presented in descending and random order.
Results: The SNR presentation (descending or random SNR) had a null effect on word recognition performance; however, presentation did have an effect on theta power, alpha power, and ILE. When controlling for presentation, there were significant effects of SNR and presentation on both theta and alpha frequency power. Theta and alpha power had an inverted U-shape as a function of SNR from easy to challenging, with peak power in the moderate SNR conditions. RLE and ILE both significantly increased as task difficulty increased as expected; however, RLE showed a stronger relation to task performance than ILE. Alpha power was a significant predictor of RLE, ILE, and WIN performance when controlling for SNR.
Conclusions: The elevated theta and alpha power in the easy to moderate SNRs and alpha power predicting self-reported listening effort suggest the activation of supportive neural systems during word recognition that could be considered a marker of listening effort. Moreover, the measures of neural support systems and listening effort were independent from task performance, which is a key element to further understanding the neural bases for listening effort. In the context of the broader literature, these results are consistent with (1) a parietal alpha role in supporting inhibitory control to suppress irrelevant information and (2) a frontal theta role in supporting performance monitoring in difficult listening conditions where speech recognition is feasible.Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://ovidsp.ovid.com/ovidweb.cgi?T=J [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=297894
in Ear and hearing > Vol. 43, n°5 (septembre-octobre 2022) . - p. 1549-1562[article]
Titre : Performance Monitoring and Cognitive Inhibition during a Speech-in-Noise Task in Older Listeners Type de document : Article Auteurs : David B. Ryan, Auteur ; Mark A. Eckert, Auteur ; Eric W. Sellers, Auteur ; Kim S. Schairer, Auteur ; Matthew T. McBee, Auteur ; Elizabeth A. Ridley, Auteur ; Sherri L. Smith, Auteur Année de publication : 2023 Article en page(s) : p. 124-139 Note générale : DOI: 10.1055/s-0043-1767695 Langues : Anglais (eng) Descripteurs : HE Vinci
Effort d'écoute ; Electroencéphalographie (EEG) ; Perte d'audition ; Reconnaissance auditive du motMots-clés : puissance alpha puissance thêta Résumé : The goal of this study was to examine the effect of hearing loss on theta and alpha electroencephalography (EEG) frequency power measures of performance monitoring and cognitive inhibition, respectively, during a speech-in-noise task. It was hypothesized that hearing loss would be associated with an increase in the peak power of theta and alpha frequencies toward easier conditions compared to normal hearing adults. The shift would reflect how hearing loss modulates the recruitment of listening effort to easier listening conditions. Nine older adults with normal hearing (ONH) and 10 older adults with hearing loss (OHL) participated in this study. EEG data were collected from all participants while they completed the words-in-noise task. It hypothesized that hearing loss would also have an effect on theta and alpha power. The ONH group showed an inverted U -shape effect of signal-to-noise ratio (SNR), but there were limited effects of SNR on theta or alpha power in the OHL group. The results of the ONH group support the growing body of literature showing effects of listening conditions on alpha and theta power. The null results of listening condition in the OHL group add to a smaller body of literature, suggesting that listening effort research conditions should have near ceiling performance. Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=305940
in Seminars in hearing > Vol. 44, n°2 (May 2023) . - p. 124-139[article]
Titre : Wideband Acoustic Reflex Measurement Type de document : Article Auteurs : M. Patrick Feeney, Auteur ; Kim S. Schairer, Auteur ; Daniel B. Putterman, Auteur Année de publication : 2023 Article en page(s) : p. 84-92 Note générale : DOI: 10.1055/s-0043-1763296 Langues : Anglais (eng) Descripteurs : Autres descripteurs
Immitance acoustique
HE Vinci
Absorbance acoustique ; Réflexe acoustique ; synaptopathie cochléaireMots-clés : Synaptophatie induite par le bruit Résumé : Acoustic reflex thresholds (ART) obtained using pure-tone probe stimuli as part of a traditional immittance test battery can be used to evaluate site of lesion and provide a cross-check with behavioral results. ARTs obtained as part of a wideband acoustic immittance (WAI) test battery using a click as the probe stimulus can be used in the same way with the added benefit that they may provide lower ARTs than those obtained using a pure-tone probe. Another benefit of the WAI ART test is that it can be completed without requiring a hermetic seal or pressurizing the ear canal. A new adaptive method of obtaining ARTs using WAI techniques may cut test time in half, thus making this an attractive option for future clinical use. More advanced uses of WAI ART tests include the measurement of AR growth functions. These may be used to investigate the possible effects of synaptopathy related to high levels of noise exposure and possible auditory deficits related to ototoxicity. Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=305931
in Seminars in hearing > Vol. 44, n°1 (February 2023) . - p. 84-92[article]
