Volume 56, Issue 4, April 2017, Page 295-295
.
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Παρασκευή 31 Μαρτίου 2017
Corrigendum
Volume 56, Issue 4, April 2017, Page 295-295
.
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Tratamiento de voz Lee Silverman en la disartria hipocinética: revisión de la efectividad del tratamiento en los enfermos de Parkinson
Source:Revista de Logopedia, Foniatría y Audiología
Author(s): Sofía Luis Parrón
La disartria es una alteración neurológica del sistema nervioso central y/o periférico que afecta al control muscular de los mecanismos del habla. La enfermedad de Parkinson se caracteriza por tener disartria hipocinética, con un habla débil, lenta y monótona, afectándose la respiración, la resonancia, la fonación, la prosodia y la articulación. Existe un tratamiento de voz llamado «Lee Silverman» que estimula y educa al paciente para producir una voz más alta a través del aumento del esfuerzo vocal.El objetivo de esta revisión, es determinar la efectividad del tratamiento de voz «Lee Silverman» como método rehabilitador logopédico de la disartria hipocinética en los pacientes con EP.En cuanto al método, se realiza una revisión bibliográfica en las bases de datos Pubmed y Cochrane Plus. Los artículos que se seleccionan son 65, que tras los criterios de inclusión y exclusión se acotan a 7, realizándose posteriormente un análisis comparativo entre ellos.Los resultados del estudio y la comparación con otra revisión exponen mejoras significativas tras el tratamiento, observándose cambios especialmente en la inteligibilidad y la intensidad de la voz, con un aumento de la sonoridad vocal y una mayor tonicidad de los órganos bucofonatorios, con una mejora de la articulación y coordinación de los movimientos, provocando un habla más funcional.En conclusión, los resultados evidencian que el tratamiento es eficaz para la rehabilitación de la disartria hipocinética en los enfermos de Parkinson. Sin embargo, los resultados no pueden considerarse universales, ya que solo se comparan 7 artículos, no siendo suficientes para apoyar o refutar la efectividad del tratamiento.Dysarthria is a neurological disorder of the central and/or peripheral nervous system that affects muscle control mechanisms of speech. Parkinson's disease (PD) is characterised by hypokinetic dysarthria, which produces a weak, slow and monotonous speech. It is affected by breathing, resonance, phonation, prosody, and articulation. There is a voice treatment called “Lee Silverman” (LSVT), which stimulates and educates the patient to produce a higher voice through the increase of vocal effort.The purpose of this review is to determine the effectiveness of LSVT as a method of speech therapy rehabilitation of hypokinetic dysarthria in patients with PD.A literature review was conducted in the PubMed and Cochrane databases. A total of 65 articles selected articles, but they were reduced to 7 after applying the inclusion and exclusion criteria. A comparative analysis was performed on these.The results of the study and comparison with other reviews have shown significant improvements after LSVT. Significant changes have been observed in intelligibility, voice intensity with an increase in vocal loudness and greater tone of the buccal-phonation organs, as well as an improvement in the articulation and coordination movements. This has led to a more functional speech.To conclude, the results show that LSVT could be effective for the rehabilitation of the hypokinetic dysarthria in Parkinson's patients. However, the results cannot be considered universal, as only 7 articles have been compared, which is not sufficient to support or refute the effectiveness of the treatment.
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Tratamiento de voz Lee Silverman en la disartria hipocinética: revisión de la efectividad del tratamiento en los enfermos de Parkinson
Source:Revista de Logopedia, Foniatría y Audiología
Author(s): Sofía Luis Parrón
La disartria es una alteración neurológica del sistema nervioso central y/o periférico que afecta al control muscular de los mecanismos del habla. La enfermedad de Parkinson se caracteriza por tener disartria hipocinética, con un habla débil, lenta y monótona, afectándose la respiración, la resonancia, la fonación, la prosodia y la articulación. Existe un tratamiento de voz llamado «Lee Silverman» que estimula y educa al paciente para producir una voz más alta a través del aumento del esfuerzo vocal.El objetivo de esta revisión, es determinar la efectividad del tratamiento de voz «Lee Silverman» como método rehabilitador logopédico de la disartria hipocinética en los pacientes con EP.En cuanto al método, se realiza una revisión bibliográfica en las bases de datos Pubmed y Cochrane Plus. Los artículos que se seleccionan son 65, que tras los criterios de inclusión y exclusión se acotan a 7, realizándose posteriormente un análisis comparativo entre ellos.Los resultados del estudio y la comparación con otra revisión exponen mejoras significativas tras el tratamiento, observándose cambios especialmente en la inteligibilidad y la intensidad de la voz, con un aumento de la sonoridad vocal y una mayor tonicidad de los órganos bucofonatorios, con una mejora de la articulación y coordinación de los movimientos, provocando un habla más funcional.En conclusión, los resultados evidencian que el tratamiento es eficaz para la rehabilitación de la disartria hipocinética en los enfermos de Parkinson. Sin embargo, los resultados no pueden considerarse universales, ya que solo se comparan 7 artículos, no siendo suficientes para apoyar o refutar la efectividad del tratamiento.Dysarthria is a neurological disorder of the central and/or peripheral nervous system that affects muscle control mechanisms of speech. Parkinson's disease (PD) is characterised by hypokinetic dysarthria, which produces a weak, slow and monotonous speech. It is affected by breathing, resonance, phonation, prosody, and articulation. There is a voice treatment called “Lee Silverman” (LSVT), which stimulates and educates the patient to produce a higher voice through the increase of vocal effort.The purpose of this review is to determine the effectiveness of LSVT as a method of speech therapy rehabilitation of hypokinetic dysarthria in patients with PD.A literature review was conducted in the PubMed and Cochrane databases. A total of 65 articles selected articles, but they were reduced to 7 after applying the inclusion and exclusion criteria. A comparative analysis was performed on these.The results of the study and comparison with other reviews have shown significant improvements after LSVT. Significant changes have been observed in intelligibility, voice intensity with an increase in vocal loudness and greater tone of the buccal-phonation organs, as well as an improvement in the articulation and coordination movements. This has led to a more functional speech.To conclude, the results show that LSVT could be effective for the rehabilitation of the hypokinetic dysarthria in Parkinson's patients. However, the results cannot be considered universal, as only 7 articles have been compared, which is not sufficient to support or refute the effectiveness of the treatment.
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Tratamiento de voz Lee Silverman en la disartria hipocinética: revisión de la efectividad del tratamiento en los enfermos de Parkinson
Source:Revista de Logopedia, Foniatría y Audiología
Author(s): Sofía Luis Parrón
La disartria es una alteración neurológica del sistema nervioso central y/o periférico que afecta al control muscular de los mecanismos del habla. La enfermedad de Parkinson se caracteriza por tener disartria hipocinética, con un habla débil, lenta y monótona, afectándose la respiración, la resonancia, la fonación, la prosodia y la articulación. Existe un tratamiento de voz llamado «Lee Silverman» que estimula y educa al paciente para producir una voz más alta a través del aumento del esfuerzo vocal.El objetivo de esta revisión, es determinar la efectividad del tratamiento de voz «Lee Silverman» como método rehabilitador logopédico de la disartria hipocinética en los pacientes con EP.En cuanto al método, se realiza una revisión bibliográfica en las bases de datos Pubmed y Cochrane Plus. Los artículos que se seleccionan son 65, que tras los criterios de inclusión y exclusión se acotan a 7, realizándose posteriormente un análisis comparativo entre ellos.Los resultados del estudio y la comparación con otra revisión exponen mejoras significativas tras el tratamiento, observándose cambios especialmente en la inteligibilidad y la intensidad de la voz, con un aumento de la sonoridad vocal y una mayor tonicidad de los órganos bucofonatorios, con una mejora de la articulación y coordinación de los movimientos, provocando un habla más funcional.En conclusión, los resultados evidencian que el tratamiento es eficaz para la rehabilitación de la disartria hipocinética en los enfermos de Parkinson. Sin embargo, los resultados no pueden considerarse universales, ya que solo se comparan 7 artículos, no siendo suficientes para apoyar o refutar la efectividad del tratamiento.Dysarthria is a neurological disorder of the central and/or peripheral nervous system that affects muscle control mechanisms of speech. Parkinson's disease (PD) is characterised by hypokinetic dysarthria, which produces a weak, slow and monotonous speech. It is affected by breathing, resonance, phonation, prosody, and articulation. There is a voice treatment called “Lee Silverman” (LSVT), which stimulates and educates the patient to produce a higher voice through the increase of vocal effort.The purpose of this review is to determine the effectiveness of LSVT as a method of speech therapy rehabilitation of hypokinetic dysarthria in patients with PD.A literature review was conducted in the PubMed and Cochrane databases. A total of 65 articles selected articles, but they were reduced to 7 after applying the inclusion and exclusion criteria. A comparative analysis was performed on these.The results of the study and comparison with other reviews have shown significant improvements after LSVT. Significant changes have been observed in intelligibility, voice intensity with an increase in vocal loudness and greater tone of the buccal-phonation organs, as well as an improvement in the articulation and coordination movements. This has led to a more functional speech.To conclude, the results show that LSVT could be effective for the rehabilitation of the hypokinetic dysarthria in Parkinson's patients. However, the results cannot be considered universal, as only 7 articles have been compared, which is not sufficient to support or refute the effectiveness of the treatment.
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Whisper and Phonation: Aerodynamic Comparisons Across Adduction and Loudness
Source:Journal of Voice
Author(s): Ramya Konnai, Ronald C. Scherer, Amy Peplinski, Kenneth Ryan
IntroductionWhisper is known to be produced by different speakers differently, especially with respect to glottal configuration that influences glottal aerodynamics. Differences in whisper production and phonation types imply important linguistic information in many languages, are identified in vocal pathologies, are used to communicate mood and emotion, and are used in vocal performance.ObjectiveThe present study focused on investigating the aerodynamic differences between whisper and phonation at different loudness and adduction levels.MethodsThree men and five women between 20 and 40 years of age participated in the study. Smooth syllable strings of the syllable /baep:/ were whispered and phonated at three different loudness levels (soft, medium, and loud) and three voice qualities (breathy, normal, and pressed).The voice qualities are associated with different adduction levels. This resulted in 18 treatment combinations (three adduction levels × three loudness levels × two sexes).ResultsA regression analysis was performed using a PROC MIXED procedure with SAS statistical software. Under similar production conditions, subglottal pressure was significantly lower in whisper than in phonation in 10 of 18 combinations, mean glottal airflow was significantly higher in whisper than in phonation in 13 of 18 combinations, and flow resistance was significantly lower in whisper than in phonation in 14 of 18 combinations, with the female subjects demonstrating these trends more frequently than the male subjects do. Of importance, in general, compared with phonation under similar production conditions, whisper is not always accompanied by lower subglottal pressure and higher airflows.ConclusionResults from this study suggest that the typical finding of lower subglottal pressure, higher glottal airflow, and decreased flow resistance in whisper compared with phonation cannot be generalized to all individuals and depends on the “whisper type.” The nine basic production conditions (three loudness levels and three adduction levels) resulted in data that may help explain the wide range of variation of whisper production reported in earlier studies.
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Phonak Introduces New E-Learning Platform for Audiologists
Phonak (http://ift.tt/1TpqSBL) launched a new e-learning platform for audiologists to get information on products, hearing loss, and counseling techniques. Audiologists can soon take courses on sales negotiations or improve their counseling skills by learning how to involve family in helping people with hearing loss. They can also broaden their professional network through participating in forums on the platform. All training materials will be in the form of e-learning modules, videos, web seminars, and scientific studies. The platform is already available in the United States, Canada, and France. Other countries and learning modules will be added periodically. Anyone interested in the platform can fill in a registration form and check out the new learning platform at http://ift.tt/2mWqjLG.
Published: 3/31/2017 10:35:00 AM
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Phonak Introduces New E-Learning Platform for Audiologists
Phonak (http://ift.tt/1TpqSBL) launched a new e-learning platform for audiologists to get information on products, hearing loss, and counseling techniques. Audiologists can soon take courses on sales negotiations or improve their counseling skills by learning how to involve family in helping people with hearing loss. They can also broaden their professional network through participating in forums on the platform. All training materials will be in the form of e-learning modules, videos, web seminars, and scientific studies. The platform is already available in the United States, Canada, and France. Other countries and learning modules will be added periodically. Anyone interested in the platform can fill in a registration form and check out the new learning platform at http://ift.tt/2mWqjLG.
Published: 3/31/2017 10:35:00 AM
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via IFTTT
Phonak Introduces New E-Learning Platform for Audiologists
Phonak (http://ift.tt/1TpqSBL) launched a new e-learning platform for audiologists to get information on products, hearing loss, and counseling techniques. Audiologists can soon take courses on sales negotiations or improve their counseling skills by learning how to involve family in helping people with hearing loss. They can also broaden their professional network through participating in forums on the platform. All training materials will be in the form of e-learning modules, videos, web seminars, and scientific studies. The platform is already available in the United States, Canada, and France. Other countries and learning modules will be added periodically. Anyone interested in the platform can fill in a registration form and check out the new learning platform at http://ift.tt/2mWqjLG.
Published: 3/31/2017 10:35:00 AM
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Development and evaluation of the LittlEARS(®) Early Speech Production Questionnaire - LEESPQ.
 |
Related Articles |
Development and evaluation of the LittlEARS(®) Early Speech Production Questionnaire - LEESPQ.
Int J Pediatr Otorhinolaryngol. 2017 Mar;94:23-29
Authors: Wachtlin B, Brachmaier J, Amann E, Hoffmann V, Keilmann A
Abstract
OBJECTIVE: Universal Newborn Hearing Screening programs, now instituted throughout the German-speaking countries, allow hearing loss to be detected and treated much earlier than ever before. With this earlier detection, arises the need for tools fit for assessing the very early speech and language production development of today's younger (0-18 month old) children. We have created the LittlEARS(®) Early Speech Production Questionnaire, with the aim of meeting this need.
METHODS: 600 questionnaires of the pilot version of the LittlEARS(®) Early Speech Production Questionnaire were distributed to parents via pediatricians' practices, day care centers, and personal contact. The completed questionnaires were statistically analyzed to determine their reliability, predictive accuracy, internal consistency, and to what extent gender or unilingualism influenced a child's score. Further, a norm curve was generated to plot the children's increased expected speech production ability with age.
RESULTS: Analysis of the data from the 352/600 returned questionnaires revealed that scores on LittlEARS(®) Early Speech Production Questionnaire correlate positively with a child's age, with older children scoring higher than do younger children. Further, the questionnaire has a high measuring reliability, high predictability, high unidemensionality of scale, and is not significantly gender or uni-/multilingually biased. A norm curve for expected development with age was created.
CONCLUSIONS: The LittlEARS(®) Early Speech Production Questionnaire (LEESPQ) is a valid tool for assessing the most important milestones in very early development of speech and language production of German language children with normal hearing aged 0-18 months old. The questionnaire is a potentially useful tool for long-term infant screening and follow-up testing and for children with normal hearing and those who would benefit from or use hearing devices.
PMID: 28167006 [PubMed - indexed for MEDLINE]
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Subjective happiness among mothers of children with disabilities: The role of stress, attachment, guilt and social support.
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Related Articles |
Subjective happiness among mothers of children with disabilities: The role of stress, attachment, guilt and social support.
Res Dev Disabil. 2016 Aug;55:44-54
Authors: Findler L, Klein Jacoby A, Gabis L
Abstract
BACKGROUND: Parenting a child with disabilities might affect the happiness of the mothers. Hence we adapted Wallander, Varni, Babani, Banis, and Wilcox's (1989) disability-stress-coping model to examine the impact of risk factors (specific stressors related to the child's disability) on the mother's adaptation (happiness). Intrapersonal factors (attachment) and social-ecological factors (social support) were hypothesized to predict adaptation. Both constitute 'risk-resistant' factors, which are mediated by the mother's perceived general stress and guilt.
METHOD: 191 mothers of a child with a developmental disability (ages 3-7) answered questionnaires on happiness, specific and general stress, attachment, guilt and social support.
RESULTS: Attachment avoidance was directly and negatively associated with mothers' happiness. General stress was negatively associated with happiness, and mediated the association between anxious attachment, support, and specific stress with happiness. Guilt was negatively associated with happiness, and served as a mediator between attachment anxiety and support and happiness.
CONCLUSION: The findings of the current research show direct and indirect associations of risk factors with happiness and the role of general stress and feelings of guilt as mediators.
IMPLICATIONS: This study stresses the importance of attachment and social support to happiness and sheds light on the unique role of guilt in promoting or inhibiting happiness.
PMID: 27037989 [PubMed - indexed for MEDLINE]
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Parental stress among parents of toddlers with moderate hearing loss.
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Parental stress among parents of toddlers with moderate hearing loss.
Res Dev Disabil. 2016 Aug;55:27-36
Authors: Dirks E, Uilenburg N, Rieffe C
Abstract
BACKGROUND: The purpose of this study was to examine parental stress in parents of toddlers with moderate hearing loss compared to hearing controls. Furthermore, the associations between parental stress and child- and parent-related factors such as language, social-emotional functioning and social support were examined.
DESIGN: The study sample consisted of 30 toddlers with moderate hearing loss and 30 hearing children (mean age 27.4 months). The two groups were compared using the Nijmegen Parenting Stress Index (NPSI) and parent-reports to rate the amount of social support and the children's social-emotional functioning. Receptive and expressive language tests were administered to the children to examine their language ability.
RESULTS: Parents of toddlers with moderate hearing loss reported comparable levels of parental stress to parents of hearing children. Individual differences in parental stress were related to child- and parent-related factors. Poorer social-emotional functioning and language ability of the child were related to higher stress levels in parents. Parents who experienced less social support reported higher stress levels.
CONCLUSIONS: Parents of toddlers with moderate hearing loss experience no more parental stress than parents of hearing children on average. Given parental stress was found to be related to poorer child functioning, early interventionists should be aware of signs of elevated stress levels in parents.
PMID: 27031795 [PubMed - indexed for MEDLINE]
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Corrigendum.
| Related Articles |
Corrigendum.
Int J Audiol. 2017 Apr;56(4):295
Authors:
PMID: 28358276 [PubMed - in process]
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Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
| Related Articles |
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Miller CW, Bentler RA, Wu YH, Lewis J, Tremblay K
Abstract
OBJECTIVE: The aims of this study were to: 1) quantify the amount of change in signal-to-noise ratio (SNR) as a result of compression and noise reduction (NR) processing in devices from three hearing aid (HA) manufacturers and 2) use the SNR changes to predict changes in speech perception. We hypothesised that the SNR change would differ across processing type and manufacturer, and that improvements in SNR would relate to improvements in performance.
DESIGN: SNR at the output of the HAs was quantified using a phase-inversion technique. A linear mixed model was used to determine whether changes in SNR across HA conditions were predictive of changes in aided speech perception in noise.
STUDY SAMPLE: Two groups participated: 25 participants had normal-hearing and 25 participants had mild to moderately severe sensorineural hearing loss.
RESULTS: The HAs programmed for both groups changed the SNR by a small, but statistically significant amount. Significant interactions in SNR changes were observed between HA devices and processing types. However, the change in SNR was not predictive of changes in speech perception.
CONCLUSION: Although observed significant changes in SNR resulting from compression and NR did not convert to changes in speech perception, these algorithms may serve other purposes.
PMID: 28355951 [PubMed - as supplied by publisher]
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Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
| Related Articles |
Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
Int J Audiol. 2017 Mar 30;:1-7
Authors: Riga M, Komis A, Marangoudakis P, Naxakis S, Ferekidis E, Kandiloros D, Danielides V
Abstract
OBJECTIVE: The mechanisms underlying the shift from acute tinnitus to chronic remain obscure. An association between tinnitus and medial olivocochlear bundle (MOCB) reflex dysfunction has been hypothesised by several studies. The differences between participants with acute and chronic tinnitus have not yet been investigated.
DESIGN: Participants were examined with distortion product otoacoustic emissions (DPOAEs) suppression elicited by contralateral white noise. They were compared in terms of frequency regions with non-recordable DPOAEs, suppression amplitudes and the presence of DPOAE enhancement.
STUDY SAMPLE: Eighteen participants with acute tinnitus, 40 age-matched adults with chronic tinnitus and 17 controls were included. All participants (aged 34.7 ± 9.6years; mean ± Standard deviation) had normal hearing. Tinnitus was bilateral in 22 participants and unilateral in 36.
RESULTS: Ears with chronic tinnitus presented significantly lower DPOAE suppression amplitudes than ears with acute tinnitus (p < 0.0001). Both acute and chronic tinnitus ears present a high prevalence of enhancement, significantly different from controls (p < 0.0001, p = 0.0002, respectively). Non-recordable DPOAEs were significantly more frequent in the chronic than in the acute tinnitus and control groups (p < 0.0001).
CONCLUSIONS: The differences between study groups indicate that when tinnitus becomes chronic, DPOAEs suppression presents changes that might reveal corresponding steps in tinnitus pathophysiology. Treatment implications are discussed.
PMID: 28355949 [PubMed - as supplied by publisher]
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Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
| Related Articles |
Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Kortlang S, Chen Z, Gerkmann T, Kollmeier B, Hohmann V, Ewert SD
Abstract
OBJECTIVE: Single-channel noise reduction (SCNR) and dynamic range compression (DRC) are important elements in hearing aids. Only relatively few studies have addressed interaction effects and typically used real hearing aids with limited knowledge about the integrated algorithms. Here the potential benefit of different combinations and integration of SCNR and DRC was systematically assessed.
DESIGN: Ten different systems combining SCNR and DRC were implemented, including five serial arrangements, a parallel and two multiplicative approaches. In an instrumental evaluation, signal-to-noise ratio (SNR) improvement and spectral contrast enhancement (SCE) were assessed. Quality ratings at 0 and +6 dB SNR, and speech reception thresholds (SRTs) in noise were measured using stationary and babble noise.
STUDY SAMPLE: Thirteen young normal-hearing (NH) listeners and 12 hearing-impaired (HI) listeners participated.
RESULTS: In line with an increased segmental SNR and spectral contrast compared to a serial concatenation, the parallel approach significantly reduced the perceived noise annoyance for both subject groups. The proposed multiplicative approaches could partly counteract increased speech distortions introduced by DRC and achieved the best overall quality for the HI listeners.
CONCLUSIONS: For high SNRs well above the individual SRT, the specific combination of SCNR and DRC is perceptually relevant and the integrative approaches were preferred.
PMID: 28355947 [PubMed - as supplied by publisher]
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Corrigendum.
| Related Articles |
Corrigendum.
Int J Audiol. 2017 Apr;56(4):295
Authors:
PMID: 28358276 [PubMed - in process]
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via IFTTT
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
| Related Articles |
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Miller CW, Bentler RA, Wu YH, Lewis J, Tremblay K
Abstract
OBJECTIVE: The aims of this study were to: 1) quantify the amount of change in signal-to-noise ratio (SNR) as a result of compression and noise reduction (NR) processing in devices from three hearing aid (HA) manufacturers and 2) use the SNR changes to predict changes in speech perception. We hypothesised that the SNR change would differ across processing type and manufacturer, and that improvements in SNR would relate to improvements in performance.
DESIGN: SNR at the output of the HAs was quantified using a phase-inversion technique. A linear mixed model was used to determine whether changes in SNR across HA conditions were predictive of changes in aided speech perception in noise.
STUDY SAMPLE: Two groups participated: 25 participants had normal-hearing and 25 participants had mild to moderately severe sensorineural hearing loss.
RESULTS: The HAs programmed for both groups changed the SNR by a small, but statistically significant amount. Significant interactions in SNR changes were observed between HA devices and processing types. However, the change in SNR was not predictive of changes in speech perception.
CONCLUSION: Although observed significant changes in SNR resulting from compression and NR did not convert to changes in speech perception, these algorithms may serve other purposes.
PMID: 28355951 [PubMed - as supplied by publisher]
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Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
| Related Articles |
Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
Int J Audiol. 2017 Mar 30;:1-7
Authors: Riga M, Komis A, Marangoudakis P, Naxakis S, Ferekidis E, Kandiloros D, Danielides V
Abstract
OBJECTIVE: The mechanisms underlying the shift from acute tinnitus to chronic remain obscure. An association between tinnitus and medial olivocochlear bundle (MOCB) reflex dysfunction has been hypothesised by several studies. The differences between participants with acute and chronic tinnitus have not yet been investigated.
DESIGN: Participants were examined with distortion product otoacoustic emissions (DPOAEs) suppression elicited by contralateral white noise. They were compared in terms of frequency regions with non-recordable DPOAEs, suppression amplitudes and the presence of DPOAE enhancement.
STUDY SAMPLE: Eighteen participants with acute tinnitus, 40 age-matched adults with chronic tinnitus and 17 controls were included. All participants (aged 34.7 ± 9.6years; mean ± Standard deviation) had normal hearing. Tinnitus was bilateral in 22 participants and unilateral in 36.
RESULTS: Ears with chronic tinnitus presented significantly lower DPOAE suppression amplitudes than ears with acute tinnitus (p < 0.0001). Both acute and chronic tinnitus ears present a high prevalence of enhancement, significantly different from controls (p < 0.0001, p = 0.0002, respectively). Non-recordable DPOAEs were significantly more frequent in the chronic than in the acute tinnitus and control groups (p < 0.0001).
CONCLUSIONS: The differences between study groups indicate that when tinnitus becomes chronic, DPOAEs suppression presents changes that might reveal corresponding steps in tinnitus pathophysiology. Treatment implications are discussed.
PMID: 28355949 [PubMed - as supplied by publisher]
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Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
| Related Articles |
Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Kortlang S, Chen Z, Gerkmann T, Kollmeier B, Hohmann V, Ewert SD
Abstract
OBJECTIVE: Single-channel noise reduction (SCNR) and dynamic range compression (DRC) are important elements in hearing aids. Only relatively few studies have addressed interaction effects and typically used real hearing aids with limited knowledge about the integrated algorithms. Here the potential benefit of different combinations and integration of SCNR and DRC was systematically assessed.
DESIGN: Ten different systems combining SCNR and DRC were implemented, including five serial arrangements, a parallel and two multiplicative approaches. In an instrumental evaluation, signal-to-noise ratio (SNR) improvement and spectral contrast enhancement (SCE) were assessed. Quality ratings at 0 and +6 dB SNR, and speech reception thresholds (SRTs) in noise were measured using stationary and babble noise.
STUDY SAMPLE: Thirteen young normal-hearing (NH) listeners and 12 hearing-impaired (HI) listeners participated.
RESULTS: In line with an increased segmental SNR and spectral contrast compared to a serial concatenation, the parallel approach significantly reduced the perceived noise annoyance for both subject groups. The proposed multiplicative approaches could partly counteract increased speech distortions introduced by DRC and achieved the best overall quality for the HI listeners.
CONCLUSIONS: For high SNRs well above the individual SRT, the specific combination of SCNR and DRC is perceptually relevant and the integrative approaches were preferred.
PMID: 28355947 [PubMed - as supplied by publisher]
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Corrigendum.
Corrigendum.
Int J Audiol. 2017 Apr;56(4):295
Authors:
PMID: 28358276 [PubMed - in process]
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Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
| Related Articles |
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Miller CW, Bentler RA, Wu YH, Lewis J, Tremblay K
Abstract
OBJECTIVE: The aims of this study were to: 1) quantify the amount of change in signal-to-noise ratio (SNR) as a result of compression and noise reduction (NR) processing in devices from three hearing aid (HA) manufacturers and 2) use the SNR changes to predict changes in speech perception. We hypothesised that the SNR change would differ across processing type and manufacturer, and that improvements in SNR would relate to improvements in performance.
DESIGN: SNR at the output of the HAs was quantified using a phase-inversion technique. A linear mixed model was used to determine whether changes in SNR across HA conditions were predictive of changes in aided speech perception in noise.
STUDY SAMPLE: Two groups participated: 25 participants had normal-hearing and 25 participants had mild to moderately severe sensorineural hearing loss.
RESULTS: The HAs programmed for both groups changed the SNR by a small, but statistically significant amount. Significant interactions in SNR changes were observed between HA devices and processing types. However, the change in SNR was not predictive of changes in speech perception.
CONCLUSION: Although observed significant changes in SNR resulting from compression and NR did not convert to changes in speech perception, these algorithms may serve other purposes.
PMID: 28355951 [PubMed - as supplied by publisher]
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Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
| Related Articles |
Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
Int J Audiol. 2017 Mar 30;:1-7
Authors: Riga M, Komis A, Marangoudakis P, Naxakis S, Ferekidis E, Kandiloros D, Danielides V
Abstract
OBJECTIVE: The mechanisms underlying the shift from acute tinnitus to chronic remain obscure. An association between tinnitus and medial olivocochlear bundle (MOCB) reflex dysfunction has been hypothesised by several studies. The differences between participants with acute and chronic tinnitus have not yet been investigated.
DESIGN: Participants were examined with distortion product otoacoustic emissions (DPOAEs) suppression elicited by contralateral white noise. They were compared in terms of frequency regions with non-recordable DPOAEs, suppression amplitudes and the presence of DPOAE enhancement.
STUDY SAMPLE: Eighteen participants with acute tinnitus, 40 age-matched adults with chronic tinnitus and 17 controls were included. All participants (aged 34.7 ± 9.6years; mean ± Standard deviation) had normal hearing. Tinnitus was bilateral in 22 participants and unilateral in 36.
RESULTS: Ears with chronic tinnitus presented significantly lower DPOAE suppression amplitudes than ears with acute tinnitus (p < 0.0001). Both acute and chronic tinnitus ears present a high prevalence of enhancement, significantly different from controls (p < 0.0001, p = 0.0002, respectively). Non-recordable DPOAEs were significantly more frequent in the chronic than in the acute tinnitus and control groups (p < 0.0001).
CONCLUSIONS: The differences between study groups indicate that when tinnitus becomes chronic, DPOAEs suppression presents changes that might reveal corresponding steps in tinnitus pathophysiology. Treatment implications are discussed.
PMID: 28355949 [PubMed - as supplied by publisher]
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Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
| Related Articles |
Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Kortlang S, Chen Z, Gerkmann T, Kollmeier B, Hohmann V, Ewert SD
Abstract
OBJECTIVE: Single-channel noise reduction (SCNR) and dynamic range compression (DRC) are important elements in hearing aids. Only relatively few studies have addressed interaction effects and typically used real hearing aids with limited knowledge about the integrated algorithms. Here the potential benefit of different combinations and integration of SCNR and DRC was systematically assessed.
DESIGN: Ten different systems combining SCNR and DRC were implemented, including five serial arrangements, a parallel and two multiplicative approaches. In an instrumental evaluation, signal-to-noise ratio (SNR) improvement and spectral contrast enhancement (SCE) were assessed. Quality ratings at 0 and +6 dB SNR, and speech reception thresholds (SRTs) in noise were measured using stationary and babble noise.
STUDY SAMPLE: Thirteen young normal-hearing (NH) listeners and 12 hearing-impaired (HI) listeners participated.
RESULTS: In line with an increased segmental SNR and spectral contrast compared to a serial concatenation, the parallel approach significantly reduced the perceived noise annoyance for both subject groups. The proposed multiplicative approaches could partly counteract increased speech distortions introduced by DRC and achieved the best overall quality for the HI listeners.
CONCLUSIONS: For high SNRs well above the individual SRT, the specific combination of SCNR and DRC is perceptually relevant and the integrative approaches were preferred.
PMID: 28355947 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2nqqEmk
via IFTTT
Corrigendum.
Corrigendum.
Int J Audiol. 2017 Apr;56(4):295
Authors:
PMID: 28358276 [PubMed - in process]
from #Audiology via ola Kala on Inoreader http://ift.tt/2mVhTEs
via IFTTT
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
| Related Articles |
Output signal-to-noise ratio and speech perception in noise: effects of algorithm.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Miller CW, Bentler RA, Wu YH, Lewis J, Tremblay K
Abstract
OBJECTIVE: The aims of this study were to: 1) quantify the amount of change in signal-to-noise ratio (SNR) as a result of compression and noise reduction (NR) processing in devices from three hearing aid (HA) manufacturers and 2) use the SNR changes to predict changes in speech perception. We hypothesised that the SNR change would differ across processing type and manufacturer, and that improvements in SNR would relate to improvements in performance.
DESIGN: SNR at the output of the HAs was quantified using a phase-inversion technique. A linear mixed model was used to determine whether changes in SNR across HA conditions were predictive of changes in aided speech perception in noise.
STUDY SAMPLE: Two groups participated: 25 participants had normal-hearing and 25 participants had mild to moderately severe sensorineural hearing loss.
RESULTS: The HAs programmed for both groups changed the SNR by a small, but statistically significant amount. Significant interactions in SNR changes were observed between HA devices and processing types. However, the change in SNR was not predictive of changes in speech perception.
CONCLUSION: Although observed significant changes in SNR resulting from compression and NR did not convert to changes in speech perception, these algorithms may serve other purposes.
PMID: 28355951 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2nqqEme
via IFTTT
Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
| Related Articles |
Differences in the suppression of distortion product otoacoustic emissions by contralateral white noise between patients with acute or chronic tinnitus.
Int J Audiol. 2017 Mar 30;:1-7
Authors: Riga M, Komis A, Marangoudakis P, Naxakis S, Ferekidis E, Kandiloros D, Danielides V
Abstract
OBJECTIVE: The mechanisms underlying the shift from acute tinnitus to chronic remain obscure. An association between tinnitus and medial olivocochlear bundle (MOCB) reflex dysfunction has been hypothesised by several studies. The differences between participants with acute and chronic tinnitus have not yet been investigated.
DESIGN: Participants were examined with distortion product otoacoustic emissions (DPOAEs) suppression elicited by contralateral white noise. They were compared in terms of frequency regions with non-recordable DPOAEs, suppression amplitudes and the presence of DPOAE enhancement.
STUDY SAMPLE: Eighteen participants with acute tinnitus, 40 age-matched adults with chronic tinnitus and 17 controls were included. All participants (aged 34.7 ± 9.6years; mean ± Standard deviation) had normal hearing. Tinnitus was bilateral in 22 participants and unilateral in 36.
RESULTS: Ears with chronic tinnitus presented significantly lower DPOAE suppression amplitudes than ears with acute tinnitus (p < 0.0001). Both acute and chronic tinnitus ears present a high prevalence of enhancement, significantly different from controls (p < 0.0001, p = 0.0002, respectively). Non-recordable DPOAEs were significantly more frequent in the chronic than in the acute tinnitus and control groups (p < 0.0001).
CONCLUSIONS: The differences between study groups indicate that when tinnitus becomes chronic, DPOAEs suppression presents changes that might reveal corresponding steps in tinnitus pathophysiology. Treatment implications are discussed.
PMID: 28355949 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2nqbYDG
via IFTTT
Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
| Related Articles |
Evaluation of combined dynamic compression and single channel noise reduction for hearing aid applications.
Int J Audiol. 2017 Mar 30;:1-12
Authors: Kortlang S, Chen Z, Gerkmann T, Kollmeier B, Hohmann V, Ewert SD
Abstract
OBJECTIVE: Single-channel noise reduction (SCNR) and dynamic range compression (DRC) are important elements in hearing aids. Only relatively few studies have addressed interaction effects and typically used real hearing aids with limited knowledge about the integrated algorithms. Here the potential benefit of different combinations and integration of SCNR and DRC was systematically assessed.
DESIGN: Ten different systems combining SCNR and DRC were implemented, including five serial arrangements, a parallel and two multiplicative approaches. In an instrumental evaluation, signal-to-noise ratio (SNR) improvement and spectral contrast enhancement (SCE) were assessed. Quality ratings at 0 and +6 dB SNR, and speech reception thresholds (SRTs) in noise were measured using stationary and babble noise.
STUDY SAMPLE: Thirteen young normal-hearing (NH) listeners and 12 hearing-impaired (HI) listeners participated.
RESULTS: In line with an increased segmental SNR and spectral contrast compared to a serial concatenation, the parallel approach significantly reduced the perceived noise annoyance for both subject groups. The proposed multiplicative approaches could partly counteract increased speech distortions introduced by DRC and achieved the best overall quality for the HI listeners.
CONCLUSIONS: For high SNRs well above the individual SRT, the specific combination of SCNR and DRC is perceptually relevant and the integrative approaches were preferred.
PMID: 28355947 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2nqqEmk
via IFTTT
Corrigendum
Volume 56, Issue 4, April 2017, Page 295-295
.
from #Audiology via ola Kala on Inoreader http://ift.tt/2ogqPUH
via IFTTT
.
from #Audiology via ola Kala on Inoreader http://ift.tt/2ogqPUH
via IFTTT
Corrigendum
Volume 56, Issue 4, April 2017, Page 295-295
.
from #Audiology via ola Kala on Inoreader http://ift.tt/2ogqPUH
via IFTTT
.
from #Audiology via ola Kala on Inoreader http://ift.tt/2ogqPUH
via IFTTT
Corrigendum
Volume 56, Issue 4, April 2017, Page 295-295
.
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.
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Binaural Interaction Effects of 30-50 Hz Auditory Steady State Responses.
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Binaural Interaction Effects of 30-50 Hz Auditory Steady State Responses.
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Binaural Interaction Effects of 30-50 Hz Auditory Steady State Responses.
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