Original speech and its echo are segregated and separately processed in the human brain.

Speech recognition crucially relies on slow temporal modulations (<16 Hz) in speech. Recent studies, however, have demonstrated that the long-delay echoes, which are common during online conferencing, can eliminate crucial temporal modulations in speech but do not affect speech intelligibility. Here, we investigated the underlying neural mechanisms. MEG experiments demonstrated that cortical activity can effectively track the temporal modulations eliminated by an echo, which cannot be fully explained by basic neural adaptation mechanisms. Furthermore, cortical responses to echoic speech can be better explained by a model that segregates speech from its echo than by a model that encodes echoic speech as a whole. The speech segregation effect was observed even when attention was diverted but would disappear when segregation cues, i.e., speech fine structure, were removed. These results strongly suggested that, through mechanisms such as stream segregation, the auditory system can build an echo-insensitive representation of speech envelope, which can support reliable speech recognition.

Entrainment echoes in the cerebellum.

Evidence accumulates that the cerebellum's role in the brain is not restricted to motor functions. Rather, cerebellar activity seems to be crucial for a variety of tasks that rely on precise event timing and prediction. Due to its complex structure and importance in communication, human speech requires a particularly precise and predictive coordination of neural processes to be successfully comprehended. Recent studies proposed that the cerebellum is indeed a major contributor to speech processing, but how this contribution is achieved mechanistically remains poorly understood. The current study aimed to reveal a mechanism underlying cortico-cerebellar coordination and demonstrate its speech-specificity. In a reanalysis of magnetoencephalography data, we found that activity in the cerebellum aligned to rhythmic sequences of noise-vocoded speech, irrespective of its intelligibility. We then tested whether these "entrained" responses persist, and how they interact with other brain regions, when a rhythmic stimulus stopped and temporal predictions had to be updated. We found that only intelligible speech produced sustained rhythmic responses in the cerebellum. During this "entrainment echo," but not during rhythmic speech itself, cerebellar activity was coupled with that in the left inferior frontal gyrus, and specifically at rates corresponding to the preceding stimulus rhythm. This finding represents evidence for specific cerebellum-driven temporal predictions in speech processing and their relay to cortical regions.

The Use of the Voice Trainer App for Vocal Control in People with a Degenerative Ataxia: A Pilot Intervention Study.

Dysarthria is disabling in persons with degenerative ataxia. There is limited evidence for speech therapy interventions. In this pilot study, we used the Voice trainer app, which was originally developed for patients with Parkinson's disease, as a feedback tool for vocal control. We hypothesized that patients with ataxic dysarthria would benefit from the Voice trainer app to better control their loudness and pitch, resulting in a lower speaking rate and better intelligibility. This intervention study consisted of five therapy sessions of 30 min within 3 weeks using the principles of the Pitch Limiting Voice Treatment. Patients received real-time visual feedback on loudness and pitch during the exercises. Besides, they were encouraged to practice at home or to use the Voice trainer in daily life. We used observer-rated and patient-rated outcome measures. The primary outcome measure was intelligibility, as measured by the Dutch sentence intelligibility test. Twenty-one out of 25 included patients with degenerative ataxia completed the therapy. We found no statistically significant improvements in intelligibility (p = .56). However, after the intervention, patients were speaking slower (p = .03) and the pause durations were longer (p < .001). The patients were satisfied about using the app. At the group level, we found no evidence for an effect of the Voice trainer app on intelligibility in degenerative ataxia. Because of the heterogeneity of ataxic dysarthria, a more tailor-made rather than generic intervention seems warranted.

ART and AutoART ECAP measurements and cochlear nerve anatomy as predictors in adult cochlear implant recipients.

PURPOSE: The purpose of this retrospective study is to compare the results of electrically evoked compound action potential (ECAP) measurements using automatic auditory response telemetry (AutoART) with those obtained by ART in adults. The study also aimed to evaluate the predictive value of intraoperative ART and AutoART ECAPs for speech intelligibility (SI) and hearing success (HS), and to determine if cochlear nerve (CN) cross-sectional area (CSA) obtained preoperatively by magnetic resonance imaging (MRI) scans could predict ART and AutoART ECAPs and SI and HS outcome. METHODS: The study analyzed and correlated ART and AutoART ECAP thresholds at electrodes E2, E6, and E10, as well as averaged ECAP thresholds over electrodes E1-E12, using data from 32 implants. Correlations were also examined for ART and AutoART ECAP slopes. In addition, averaged ART and AutoART ECAP thresholds and slopes over all 12 electrodes for each participant were correlated with CN CSA measured from MRI sequences. SI of the monosyllabic Freiburg Speech Test at 65 dB sound pressure level was examined along with averaged ART and AutoART thresholds and slopes over all 12 electrodes. A parallel analysis was performed for HS, derived from the difference between baseline and 6-month SI. Finally, correlations between CN CSA and SI, as well as CN CSA and HS were examined. RESULTS: The results of the study showed a significant positive correlation between ART and AutoART ECAP thresholds and as well as slopes for E2, E6, E10 and averaged thresholds and slopes of E1-E12. However, no significant correlation was observed between ART and AutoART averaged ECAP thresholds and slopes and either SI and HS or CN CSA. Furthermore, no significant correlation was found between CN CSA and SI and HS. CONCLUSION: While AutoART is a reliable and safe program for measuring ECAPs in adults, the study found no preoperative prognostic information on intraoperative ECAP results using parameters extracted from current MRI sequences or pre-/intraoperative information on subsequent hearing outcome using ECAP and CN CSA.

Pupillometry reveals differences in cognitive demands of listening to face mask-attenuated speech.

Face masks offer essential protection but also interfere with speech communication. Here, audio-only sentences spoken through four types of masks were presented in noise to young adult listeners. Pupil dilation (an index of cognitive demand), intelligibility, and subjective effort and performance ratings were collected. Dilation increased in response to each mask relative to the no-mask condition and differed significantly where acoustic attenuation was most prominent. These results suggest that the acoustic impact of the mask drives not only the intelligibility of speech, but also the cognitive demands of listening. Subjective effort ratings reflected the same trends as the pupil data.

Combining Cardiovascular and Pupil Features Using k-Nearest Neighbor Classifiers to Assess Task Demand, Social Context, and Sentence Accuracy During Listening.

In daily life, both acoustic factors and social context can affect listening effort investment. In laboratory settings, information about listening effort has been deduced from pupil and cardiovascular responses independently. The extent to which these measures can jointly predict listening-related factors is unknown. Here we combined pupil and cardiovascular features to predict acoustic and contextual aspects of speech perception. Data were collected from 29 adults (mean  =  64.6 years, SD  =  9.2) with hearing loss. Participants performed a speech perception task at two individualized signal-to-noise ratios (corresponding to 50% and 80% of sentences correct) and in two social contexts (the presence and absence of two observers). Seven features were extracted per trial: baseline pupil size, peak pupil dilation, mean pupil dilation, interbeat interval, blood volume pulse amplitude, pre-ejection period and pulse arrival time. These features were used to train k-nearest neighbor classifiers to predict task demand, social context and sentence accuracy. The k-fold cross validation on the group-level data revealed above-chance classification accuracies: task demand, 64.4%; social context, 78.3%; and sentence accuracy, 55.1%. However, classification accuracies diminished when the classifiers were trained and tested on data from different participants. Individually trained classifiers (one per participant) performed better than group-level classifiers: 71.7% (SD  =  10.2) for task demand, 88.0% (SD  =  7.5) for social context, and 60.0% (SD  =  13.1) for sentence accuracy. We demonstrated that classifiers trained on group-level physiological data to predict aspects of speech perception generalized poorly to novel participants. Individually calibrated classifiers hold more promise for future applications.

Contributions of listening effort and intelligibility to cortical tracking of speech in adverse listening conditions.

Cortical tracking of speech is vital for speech segmentation and is linked to speech intelligibility. However, there is no clear consensus as to whether reduced intelligibility leads to a decrease or an increase in cortical speech tracking, warranting further investigation of the factors influencing this relationship. One such factor is listening effort, defined as the cognitive resources necessary for speech comprehension, and reported to have a strong negative correlation with speech intelligibility. Yet, no studies have examined the relationship between speech intelligibility, listening effort, and cortical tracking of speech. The aim of the present study was thus to examine these factors in quiet and distinct adverse listening conditions. Forty-nine normal hearing adults listened to sentences produced casually, presented in quiet and two adverse listening conditions: cafeteria noise and reverberant speech. Electrophysiological responses were registered with electroencephalogram, and listening effort was estimated subjectively using self-reported scores and objectively using pupillometry. Results indicated varying impacts of adverse conditions on intelligibility, listening effort, and cortical tracking of speech, depending on the preservation of the speech temporal envelope. The more distorted envelope in the reverberant condition led to higher listening effort, as reflected in higher subjective scores, increased pupil diameter, and stronger cortical tracking of speech in the delta band. These findings suggest that using measures of listening effort in addition to those of intelligibility is useful for interpreting cortical tracking of speech results. Moreover, reading and phonological skills of participants were positively correlated with listening effort in the cafeteria condition, suggesting a special role of expert language skills in processing speech in this noisy condition. Implications for future research and theories linking atypical cortical tracking of speech and reading disorders are further discussed.

Automatic recognition of second language speech-in-noise.

Measuring how well human listeners recognize speech under varying environmental conditions (speech intelligibility) is a challenge for theoretical, technological, and clinical approaches to speech communication. The current gold standard-human transcription-is time- and resource-intensive. Recent advances in automatic speech recognition (ASR) systems raise the possibility of automating intelligibility measurement. This study tested 4 state-of-the-art ASR systems with second language speech-in-noise and found that one, whisper, performed at or above human listener accuracy. However, the content of whisper's responses diverged substantially from human responses, especially at lower signal-to-noise ratios, suggesting both opportunities and limitations for ASR--based speech intelligibility modeling.

Effects of Deep-Brain Stimulation on Speech: Perceptual and Acoustic Data.

PURPOSE: This study examined speech changes induced by deep-brain stimulation (DBS) in speakers with Parkinson's disease (PD) using a set of auditory-perceptual and acoustic measures. METHOD: Speech recordings from nine speakers with PD and DBS were compared between DBS-On and DBS-Off conditions using auditory-perceptual and acoustic analyses. Auditory-perceptual ratings included voice quality, articulation precision, prosody, speech intelligibility, and listening effort obtained from 44 listeners. Acoustic measures were made for voicing proportion, second formant frequency slope, vowel dispersion, articulation rate, and range of fundamental frequency and intensity. RESULTS: No significant changes were found between DBS-On and DBS-Off for the five perceptual ratings. Four of six acoustic measures revealed significant differences between the two conditions. While articulation rate and acoustic vowel dispersion increased, voicing proportion and intensity range decreased from the DBS-Off to DBS-On condition. However, a visual examination of the data indicated that the statistical significance was mostly driven by a small number of participants, while the majority did not show a consistent pattern of such changes. CONCLUSIONS: Our data, in general, indicate no-to-minimal changes in speech production ensued from DBS stimulation. The findings are discussed with a focus on large interspeaker variability in PD in terms of their speech characteristics and the potential effects of DBS on speech.

Loudness Balancing Optimization for Better Speech Intelligibility, Music Perception, and Spectral Temporal Resolution in Cochlear Implant Users.

HYPOTHESIS: The behaviorally based programming with loudness balancing (LB) would result in better speech understanding, spectral-temporal resolution, and music perception scores, and there would be a relationship between these scores. BACKGROUND: Loudness imbalances at upper stimulation levels may cause sounds to be perceived as irregular, gravelly, or overly echoed and may negatively affect the listening performance of the cochlear implant (CI) user. LB should be performed after fitting to overcome these problems. METHODS: The study included 26 unilateral Med-EL CI users. Two different CI programs based on the objective electrically evoked stapedial reflex threshold (P1) and the behaviorally program with LB (P2) were recorded for each participant. The Turkish Matrix Sentence Test (TMS) was applied to evaluate speech perception; the Random Gap Detection Test (RGDT) and Spectral-Temporally Modulated Ripple Test (SMRT) were applied to evaluate spectral temporal resolution skills; the Mini Profile of Music Perception Skills (mini-PROMS) and Melodic Contour Identification (MCI) tests were applied to evaluate music perception, and the results were compared. RESULTS: Significantly better scores were obtained with P2 in TMS tests performed in noise and quiet. SMRT scores were significantly correlated with TMS in quiet and noise, and mini-PROMS sound perception results. Although better scores were obtained with P2 in the mini-PROMS total score and MCI, a significant difference was found only for MCI. CONCLUSION: The data from the current study showed that equalization of loudness across CI electrodes leads to better perceptual acuity. It also revealed the relationship between speech perception, spectral-temporal resolution, and music perception.

On the Feasibility of Using Behavioral Listening Effort Test Methods to Evaluate Auditory Performance in Cochlear Implant Users.

Realistic outcome measures that reflect everyday hearing challenges are needed to assess hearing aid and cochlear implant (CI) fitting. Literature suggests that listening effort measures may be more sensitive to differences between hearing-device settings than established speech intelligibility measures when speech intelligibility is near maximum. Which method provides the most effective measurement of listening effort for this purpose is currently unclear. This study aimed to investigate the feasibility of two tests for measuring changes in listening effort in CI users due to signal-to-noise ratio (SNR) differences, as would arise from different hearing-device settings. By comparing the effect size of SNR differences on listening effort measures with test-retest differences, the study evaluated the suitability of these tests for clinical use. Nineteen CI users underwent two listening effort tests at two SNRs (+4 and +8 dB relative to individuals' 50% speech perception threshold). We employed dual-task paradigms-a sentence-final word identification and recall test (SWIRT) and a sentence verification test (SVT)-to assess listening effort at these two SNRs. Our results show a significant difference in listening effort between the SNRs for both test methods, although the effect size was comparable to the test-retest difference, and the sensitivity was not superior to speech intelligibility measures. Thus, the implementations of SVT and SWIRT used in this study are not suitable for clinical use to measure listening effort differences of this magnitude in individual CI users. However, they can be used in research involving CI users to analyze group data.

Cochlear Implantation in Single-Sided Deafness and Asymmetric Hearing Loss: 12 Months Follow-up Results of a European Multicenter Evaluation.

People with single-sided deafness (SSD) or asymmetric hearing loss (AHL) have particular difficulty understanding speech in noisy listening situations and in sound localization. The objective of this multicenter study is to evaluate the effect of a cochlear implant (CI) in adults with single-sided deafness (SSD) or asymmetric hearing loss (AHL), particularly regarding sound localization and speech intelligibility with additional interest in electric-acoustic pitch matching. A prospective longitudinal study at 7 European tertiary referral centers was conducted including 19 SSD and 16 AHL subjects undergoing cochlear implantation. Sound localization accuracy was investigated in terms of root mean square error and signed bias before and after implantation. Speech recognition in quiet and speech reception thresholds in noise for several spatial configurations were assessed preoperatively and at several post-activation time points. Pitch perception with CI was tracked using pitch matching. Data up to 12 months post activation were collected. In both SSD and AHL subjects, CI significantly improved sound localization for sound sources on the implant side, and thus overall sound localization. Speech recognition in quiet with the implant ear improved significantly. In noise, a significant head shadow effect was found for SSD subjects only. However, the evaluation of AHL subjects was limited by the small sample size. No uniform development of pitch perception with the implant ear was observed. The benefits shown in this study confirm and expand the existing body of evidence for the effectiveness of CI in SSD and AHL. Particularly, improved localization was shown to result from increased localization accuracy on the implant side.

Testes de fala no ruído na clínica audiológica - Uma Revisão Integrativa / Noise speech tests in the audiological clinic - An Integrative Review

Introdução: A audiometria convencional não é suficientemente confiável para prever a compreensão de uma pessoa num ambiente ruidoso e, desta forma, inserir testes de fala no ruído na rotina clínica audiológica pode ser uma ferramenta útil para detectar possíveis problemas da função auditiva central. Objetivo: Realizar uma revisão integrativa da literatura sobre testes de fala no ruído disponíveis para uso na clínica audiológica. Método: Busca de publicações sem delimitação temporal nos bancos de dados Lilacs, PubMed, Medline, IBCS e SciELO, utilizando-se como descritores: teste de fala no ruído, percepção auditiva, testes de discriminação auditiva, distúrbios auditivos, padronização, desenvolvimento, validação, testes do limiar de recepção da fala, percepção auditiva e perda auditiva. Não houve exclusão por período de publicação. Os artigos foram pesquisados nos meses de junho e julho de 2017. Resultados: Foram localizados um total de 1200 artigos e 39 foram inseridos nesta revisão integrativa por satisfazerem os critérios de inclusão. Nos artigos selecionados, foram localizados 25 materiais diferentes que utilizaram para avaliação de fala no ruído: sílabas, palavras, sentenças, dígitos e associação de palavras e tonalidade e palavras e sentenças. Os tipos de ruídos empregados foram: espectro de fala, ruído tipo babble, ruído branco e ruído estacionário e tais materiais foram desenvolvidos para uso em adultos e/ou crianças e sujeitos com e/ou sem perda auditiva. Conclusão: Todos os autores relataram a importância de inserir testes de fala no ruído na rotina clínica, já que só a audiometria convencional não prevê a compreensão de fala em ambiente ruidoso.

Introduction: Conventional audiometry is not reliable enough to predict a person's understanding in a noisy environment, so inserting speech noise tests into the audiological clinical routine can be a useful tool for detecting possible central auditory function problems. Objective: To conduct an integrative literature review on noise speech tests available for use in the audiological clinic. Method: Search for publications without temporal delimitation in the Lilacs, PubMed, Medline, IBCS and SciELO databases, using the following keywords: Noise speech test, auditory perception, auditory discrimination tests, hearing disorders, standardization, development, validation, speech reception threshold tests, hearing perception and hearing loss. There was no exclusion by publication period. The articles were searched in June and July 2017. Results: A total of 1200 articles were found and 39 were included in this integrative review because they met the inclusion criteria. In the selected articles, 25 different materials were used to evaluate speech in noise: syllables, words, sentences, digits and association of words and tone and words and sentences. The types of noise used were: speech spectrum, babble noise, white noise and stationary noise and these materials were developed for use in adults and / or children and subjects with and / or without hearing loss. Conclusion: All authors reported the importance of inserting speech tests in noise into the clinical routine, since only conventional audiometry does not predict speech comprehension in noisy environment.

Introducción: La audiometría convencional no es confiable para predecir la comprensión de una persona en entorno ruidoso, por lo que insertar pruebas de ruido del habla en la rutina audiológica puede ser una herramienta útil para detectar posibles problemas de la función auditiva central. Objetivo: realizar una revisión integral de literatura sobre las pruebas de ruido en el habla disponibles para su uso en la clínica audiológica. Método: Búsqueda de publicaciones sin delimitación temporal en las bases de datos Lilacs, PubMed, Medline, IBCS y SciELO, utilizando las palabras clave: prueba de ruido, percepción auditiva, pruebas de discriminación auditiva, trastornos auditivos, estandarización, desarrollo, validación , pruebas de umbral de recepción del habla, percepción auditiva y pérdida auditiva. No hubo exclusión por período de publicación. Se buscaron los artículos en junio y julio de 2017. Resultados: se encontraron un total de 1200 artículos y se incluyeron 39 en esta revisión porque cumplían con los criterios de inclusión. En los artículos seleccionados, se utilizaron 25 materiales diferentes para evaluar el habla en ruido: sílabas, palabras, oraciones, dígitos y asociación de palabras y tonos y oraciones. Tipos de ruido utilizados: espectro del habla, ruido de balbuceo, ruido blanco y ruido estacionario, y estos materiales se desarrollaron para su uso en adultos y/o niños y sujetos con y/o sin pérdida auditiva. Conclusión: Todos los autores informaron la importancia de insertar pruebas de habla en ruido en la rutina clínica, ya que solo la audiometría convencional no predice la comprensión del habla en entornos ruidosos.

Desempenho de crianças com distúrbios dos sons da fala no instrumento "Avaliação dinâmica das habilidades motoras da fala" / Performance of children with speech sound disorders in the dynamic evaluation of motor speech skills

RESUMO Objetivo Comparar o desempenho das crianças com aquisição de fala típica, desvio fonológico e com apraxia de fala na infância nas variáveis precisão de produção e consistência do instrumento "Avaliação dinâmica das habilidades motoras da fala" (DEMSS-BR). Método A amostra foi constituída por 18 crianças com idades entre 4 anos e 6 meses a 5 anos e 8 meses, de ambos os gêneros, divididas em três grupos: seis com aquisição típica de fala, seis com desvio fonológico e seis com apraxia de fala na infância. Todas foram avaliadas por meio do instrumento DEMSS-BR, e o desempenho foi observado a partir da análise das variáveis de precisão da produção e consistência da fala. Para comparação do desempenho entre grupos utilizou-se o teste U de Mann-Whitney. Resultados O grupo com apraxia de fala na infância apresentou desempenho inferior nas variáveis de precisão da produção e consistência da fala quando comparado aos demais grupos. Conclusão O grupo com apraxia de fala na infância apresentou pior desempenho no DEMSS-BR quando comparado aos de crianças típicas e com desvio fonológico. Desta forma, foi possível constatar que o DEMSS-BR auxilia no diagnóstico diferencial de crianças com distúrbios dos sons da fala.

ABSTRACT Purpose To compare performance between children with typical speech acquisition, phonological disorders, and childhood apraxia of speech for the variables overall articulatory accuracy and consistency of the Dynamic Evaluation of Motor Speech Skill - Brazilian Portuguese version (DEMSS-BR). Methods Study participants were 18 children of both genders aged 4 years and 6 months to 5 years and 8 months. The sample was divided into three groups: six children with typical speech acquisition (TSA), six children with phonological disorder (PD), and six individuals with childhood apraxia of speech (CAS). All participants were submitted to the DEMSS-BR and had their subscores of speech accuracy and consistency measured. Performance comparison between the groups was statistically evaluated using the Mann-Whitney U Test. Results Participants in the group with CAS presented poorer performance for the variables overall articulatory accuracy and consistency compared with those of participants in the other two groups. Conclusion The group of children with childhood apraxia of speech presented poorer performance on the DEMSS-BR compared with those of the groups with typical speech acquisition and phonological disorders. The study demonstrated that the DEMSS-BR assists with differential diagnosis of children with speech sound disorders.

Estudo do teste de fala comprimida em crianças / Study on the application of the time-compressed speech in children

RESUMO Objetivo Analisar o desempenho das crianças sem alteração do processamento auditivo central no teste de fala comprimida. Método Trata-se de um estudo do tipo descritivo, observacional, transversal. Participaram do estudo 22 crianças com idade entre 7 e 11 anos, normo-ouvintes, sem transtorno do processamento auditivo central. Para descartar esse transtorno, foram aplicados o questionário Scale of Auditory Behaviors, a avaliação simplificada do processamento auditivo e o teste dicótico de dígitos na etapa de integração binaural. Nas crianças sem alteração, foi aplicado o teste de fala comprimida. Resultados Os indivíduos apresentaram melhor desempenho na lista de monossílabos do que na de dissílabos, apesar de não haver diferença significativa. Não houve influência da ordem de apresentação das listas, das variáveis gênero e orelha no desempenho do teste. Em relação à idade, apenas na lista de dissílabos houve diferença no desempenho. Conclusão Foi possível concluir que a média de acertos das crianças no Teste de Fala Comprimida foi inferior aos achados na literatura nacional em adultos. Houve diferença no desempenho do Teste de Fala Comprimida com a idade apenas na lista de dissílabos. Não houve diferença quanto à ordem de apresentação das listas de aplicação nem em relação ao tipo de estímulo.

ABSTRACT Purpose To analyze the performance of children without alteration of central auditory processing in the Time-compressed Speech Test. Methods This is a descriptive, observational, cross-sectional study. Study participants were 22 children aged 7-11 years without central auditory processing disorders. The following instruments were used to assess whether these children presented central auditory processing disorders: Scale of Auditory Behaviors, simplified evaluation of central auditory processing, and Dichotic Test of Digits (binaural integration stage). The Time-compressed Speech Test was applied to the children without auditory changes. Results The participants presented better performance in the list of monosyllabic words than in the list of disyllabic words, but with no statistically significant difference. No influence on test performance was observed with respect to order of presentation of the lists and the variables gender and ear. Regarding age, difference in performance was observed only in the list of disyllabic words. Conclusion The mean score of children in the Time-compressed Speech Test was lower than that of adults reported in the national literature. Difference in test performance was observed only with respect to the age variable for the list of disyllabic words. No difference was observed in the order of presentation of the lists or in the type of stimulus.

Teste de fala comprimida em idosos / Time-compressed speech test in the elderly

RESUMO Objetivo Avaliar o desempenho de idosos no teste de fala comprimida segundo as variáveis orelha, ordem de apresentação e idade, além de analisar a ocorrência de erros. Método O estudo é caracterizado como observacional, descritivo, quantitativo, analítico e do tipo transversal primário, o qual envolveu 22 idosos entre 60 e 80 anos de idade, portadores de audição normal ou com perda neurossensorial de grau leve. Os idosos foram submetidos à aplicação do teste de fala comprimida apenas com dissílabos e com taxa de compressão de 60%, por meio do método de compressão de tempo eletromecânico. Em cada orelha, foi aplicada uma lista de 50 dissílabos, sendo a ordem de início de teste aleatória. Resultados Quanto ao desempenho no teste, verificou-se que não houve diferença estatística entre as orelhas e os idosos apresentaram resultados aquém do encontrado na população adulta. Encontrou-se significância estatística de melhor desempenho para a segunda orelha de início de teste. A maior ocorrência de erros se deu para as palavras que iniciaram com os fonemas /p/ e /d/. A presença de encontro consonantal na palavra também aumentou a ocorrência de erros. Conclusão Os idosos apresentam pior desempenho na habilidade de fechamento auditivo, quando avaliados por meio do teste de fala comprimida, em comparação aos indivíduos adultos. Este resultado sugere que os idosos têm dificuldades para reconhecer a fala quando esta lhe é apresentada numa velocidade aumentada. Sendo assim, estratégias devem ser utilizadas para facilitar o processo comunicativo, independentemente da presença de uma perda auditiva.

ABSTRACT Purpose The present study aimed to evaluate the performance of elderly people in the time-compressed speech test according to the variables ears and order of display, and analyze the types of errors presented by the volunteers. Methods This is an observational, descriptive, quantitative, analytical and primary cross-sectional study involving 22 elderly with normal hearing or mild sensorineural hearing loss between the ages of 60 and 80. The elderly were submitted to the time-compressed speech test with compression ratio of 60%, through the electromechanical time compression method. A list of 50 disyllables was applied to each ear and the initial side was chosen at random. Results On what concerns to the performance in the test, the elderly fell short in relation to the adults and there was no statistical difference between the ears. It was found statistical evidence of better performance for the second ear in the test. The most mistaken words were the ones initiated with the phonemes /p/ and /d/. The presence of consonant combination in a word also increased the occurrence of mistakes. Conclusion The elderly have worse performance in the auditory closure ability when assessed by the time-compressed speech test compared to adults. This result suggests that elderly people have difficulty in recognizing speech when this is pronounced in faster rates. Therefore, strategies must be used to facilitate the communicative process, regardless the presence of hearing loss.

La inteligibilidad vocal en las personas con laringectomía que se comunican con erigmofonía / The vocal intelligibilityin people withlaryngectomythat communicate with erygmophony

Las personas a las que se le ha realizado una laringectomía total y extirpado completamente su laringe ven alteradas en grado variable las funciones propias de ese órgano: esfinteriana, respiratoria y vocal. Respecto a esta última y su producto final: la voz, la pérdida es completa, por lo que es necesario rehabilitar dicha función para que la persona pueda comunicarse. El objetivo de este trabajo es valorar la inteligibilidad vocal de las personas laringectomizadas que hayan sido rehabilitadas con erigmofonía. Material y métodos: diseño prospectivo en 17 personas laringectomizadas que utilizan la voz erigmofónica para comunicarse. Se estudiaron con el VHI-30, espectrograma de banda estrecha, evaluación perceptual (GRABS y CAPE-V) y, de forma novedosa, valorando la inteligibilidad vocal a través de la lectura y reconocimiento de palabras bisílabas. Resultados: el VHI-30 muestra que las personas laringectomizadas perciben su voz como una limitación leve y moderada. El espectrograma presenta diferencias sustanciales entre la voz erigmofónica y la voz laríngea fisiológica. La evaluación perceptual indica una afectación moderada/severa en GRABS y media/grave en CAPE-V. En la inteligibilidad verbal predominan los valores medios-bajos (88 por ciento), pero hay pacientes con valores altos (12 por ciento). No se han encontrado relaciones estadísticamente significativas entre el VHI-30, la evaluación perceptual y la inteligibilidad verbal. Conclusiones: la valoración de la inteligibilidad de la voz erigmofónica proporciona al rehabilitador datos útiles y de fácil adquisición sobre la capacidad comunicativa de las personas con laringectomía total, que permiten complementar otros procedimientos de valoración objetiva (espectrograma) y subjetiva (VHI-30, GRABS y CAPE-V)

People who have had a total laryngectomy and have completely extirpated their larynx have, in a variable degree, altered the functions of this organ: sphincter, respiratory, and vocal. Regarding the latter and its final product: the voice, the loss is complete, so it is necessary to rehabilitate this function so that the person can communicate. The aim of this work is to evaluate the vocal intelligibility of laryngectomized individuals who have been rehabilitated with erygmophony. Material and method: prospective design in 17 laryngectomized individuals that use the erygmophonic voice to communicate. They were studied with VHI-30, narrow band spectrogram, perceptual evaluation (GRABS and CAPE-V) and, in a novel way, assessing the vocal intelligibility through the reading and recognition of bisyllabic words. Results: VHI-30 shows that laryngectomized individuals perceive their voice as a mild and moderate limitation. The spectrogram shows substantial differences between the erygmophonic voice and the laryngeal physiological voice. Perceptual evaluation indicates moderate/severe affectation in GRABS and medium/severe involvement in CAPE-V. In the verbal intelligibility, the medium-low values (88 percent) are predominant, but there are patients with high values (12 percent). No statistically significant relationships were found between VHI-30, perceptual evaluation, and verbal intelligibility. Conclusions: the evaluation of the intelligibility of the erygmophonic voice provides the rehabilitator with useful and easy-to-read data on the communicative capacity of persons with total laryngectomy, complementing other objective (spectrogram) and subjective assessment procedures (VHI-30, GRABS and CAPE-V)

Classificação de perdas auditivas por grau e configuração e relações com Índice de Inteligibilidade de Fala (SII) amplificado / Hearing loss classification by degree, configuration and relationship with amplified Speech Intelligibility Index (SII)

RESUMO Objetivo estabelecer relações entre valores do índice de inteligibilidade de fala - SII gerados na verificação dos aparelhos de amplificação sonora programados conforme regra prescritiva DSLm[i/o]v5 e uma proposta de classificação de indivíduos que considere a associação de grau e configuração de perdas auditivas. Método foram selecionadas 41 crianças com idades entre 4 e 80 meses, totalizando 78 orelhas para análise. Foram considerados os limiares auditivos nas frequências 250, 500, 1000, 2000 e 4000 Hz e analisados valores de SII para os sinais de entrada 65 dB NPS, obtidos na verificação dos AASI no equipamento Verifit®Audioscan. Resultados as perdas auditivas foram classificadas em cinco grupos homogêneos quanto às características audiológicas (grau e configuração audiométrica) e heterogêneos entre si. A partir dos grupos, determinaram-se três intervalos de valores de SII. Foram determinadas equações para classificação da perda auditiva conforme grupos e equações para determinação de valores de SII ajustado. Conclusão o valor de SII pode ser considerado um indicador da audibilidade para sons de fala para diferentes características de perdas auditivas e nortear avalições de comportamento auditivo. O SII tem relação mais forte com a associação das variáveis grau e configuração audiométrica, quando comparado com sua relação com o grau da perda auditiva isoladamente.

ABSTRACT Purpose To establish the relationship between speech intelligibility index (SII) values generated at the verification of hearing aids programmed according to DSLm [i/o] v5 prescription rule and a proposed individual classification that considers the combination of hearing loss degree and configuration. Methods Forty-one children aged between 4 and 80 months were selected, totaling 78 ears for analysis. We considered hearing thresholds at the frequencies of 250, 500, 1000, 2000 and 4000 Hz; and analyzed values of the Speech Intelligibility Index (SII) for the input signal of 65 dB SPL obtained during the verification of hearing aids using the equipment Verifit®Audioscan. Results Hearing losses were classified into five homogeneous groups regarding audiometric degree and configuration. The groups were heterogeneous when compared to each other. From the groups, three ranges of SII values were determined. Equations were developed for classification of hearing loss according to groups and for determination of the adjusted SII values. Conclusion The SII value is a useful indicator of audibility for speech sounds in different characteristics of hearing losses, and can guide observations of auditory skills. The SII has stronger relationship with the association of the audiometric degree and configuration when compared with degree of hearing loss alone.

Behavioral and electrophysiological auditory processing measures in traumatic brain injury after acoustically controlled auditory training: a long-term study / Medidas comportamentais e eletrofisiológicas do processamento auditivo em traumatismo craniencefálico após treinamento auditivo acusticamente controlado: estudo de longo prazo

ABSTRACT Objective To investigate the long-term efficacy of acoustically controlled auditory training in adults after tarumatic brain injury. Methods A total of six audioogically normal individuals aged between 20 and 37 years were studied. They suffered severe traumatic brain injury with diffuse axional lesion and underwent an acoustically controlled auditory training program approximately one year before. The results obtained in the behavioral and electrophysiological evaluation of auditory processing immediately after acoustically controlled auditory training were compared to reassessment findings, one year later. Results Quantitative analysis of auditory brainsteim response showed increased absolute latency of all waves and interpeak intervals, bilaterraly, when comparing both evaluations. Moreover, increased amplitude of all waves, and the wave V amplitude was statistically significant for the right ear, and wave III for the left ear. As to P3, decreased latency and increased amplitude were found for both ears in reassessment. The previous and current behavioral assessment showed similar results, except for the staggered spondaic words in the left ear and the amount of errors on the dichotic consonant-vowel test. Conclusion The acoustically controlled auditory training was effective in the long run, since better latency and amplitude results were observed in the electrophysiological evaluation, in addition to stability of behavioral measures after one-year training.

RESUMO Objetivo Investigar a eficácia de longo prazo do treinamento auditivo acusticamente controlado em indivíduos adultos após traumatismo craniencefálico. Métodos Foram estudados seis indivíduos audiologicamente normais com idades entre 20 e 37 anos, que sofreram traumatismo craniencefálico grave com lesão axional difusa, submetidos a um programa de treinamento auditivo acusticamente controlado aproximadamente um ano antes. Foram comparados os resultados obtidos nas avaliações comportamental e eletrofisiológica do processamento auditivo imediatamente após o treinamento auditivo acusticamente controlado e a reavaliação, um ano após. Resultados Quanto ao potencial de tronco encefálico, observou-se aumento da latência absoluta de todas as ondas e os intervalos interpicos, na comparação entre as avaliações, bilateralmente, bem como aumento da amplitude de todas as ondas, sendo a onda V estatisticamente significativa, para a orelha direita e a onda III para a orelha esquerda. Quanto ao P3, observaram-se diminuição da latência e aumento da amplitude do P3 na avaliação atual em ambas as orelhas. A avaliação comportamental atual evidenciou desempenho semelhante nas duas avaliações, exceto no teste dicótico de dissílabos alternados na orelha esquerda e a quantidade de erros no teste dicótico consoante-vogal. Conclusão O treinamento auditivo acusticamente controlado mostrou-se eficaz em longo prazo, uma vez que foram observados resultados melhores de latência e amplitude na avaliação eletrofisiológica, bem como estabilidade das medidas comportamentais após um ano de treinamento.

The relation between auditory discrimination and phonological disorder / A relação entre a discriminação auditiva e o desvio fonológico

PURPOSE: To determine the most frequent errors of children with phonological disorders in an auditory discrimination test, and to correlate their performance with age, gender and severity of phonological disorder. METHODS: The sample consisted of 82 children with phonological disorders, of both gender, with ages between 4 years and 7 years and 11 months. All subjects were submitted to the Phonological Assessment of Child (Avaliação Fonológica da Criança) in order to establish the severity of phonological disorder, and to the auditory discrimination test. Data were statistically analyzed. RESULTS: It was found that 38% of the subjects had poor results on the test, and the most frequent errors were: posteriorization, devoicing of stops, and semivocalization of liquid consonants. Moreover, it was observed that auditory discrimination difficulties were less frequent in older subjects, and more severe according to the severity of the phonological disorder. CONCLUSION: Great part of the children with phonological disorders has difficulties in auditory discrimination. However, these difficulties were less frequent in older subjects and more severe according to the severity of the disorder. Male subjects seem to have more difficulty in discriminating speech sounds.

OBJETIVO: Verificar os erros mais frequentes cometidos por crianças com desvio fonológico em um teste de discriminação auditiva, e relacionar o desempenho no teste com a idade, o gênero e a gravidade do desvio fonológico. MÉTODOS: A amostra constituiu-se por 82 crianças com desvio fonológico, de ambos os gêneros, com idades entre 4 anos e 7 anos e 11 meses. Todos os sujeitos foram submetidos à Avaliação Fonológica da Criança para estabelecer o grau do desvio fonológico, e ao teste de discriminação auditiva. Os resultados foram analisados estatisticamente. RESULTADOS: Verificou-se que 38% das crianças apresentaram resultados insatisfatórios no teste, sendo os erros mais frequentes: posteriorização, dessonorização de plosiva, e semivocalização de líquida. Além disso, observou-se que as dificuldades na discriminação auditiva tiveram menor ocorrência em sujeitos mais velhos e foram mais comprometidas de acordo com a gravidade do desvio fonológico. CONCLUSÃO: Grande parte das crianças com desvio fonológico apresenta dificuldades na discriminação auditiva. Entretanto, tais dificuldades tiveram menor ocorrência em sujeitos mais velhos e foram mais comprometidas conforme a gravidade do desvio fonológico. Os meninos parecem ter maiores dificuldades para discriminar os sons da fala.