Comparison of Speech Recognition in Cochlear Implant Users with Different Speech Processors.

BACKGROUND: Speech recognition in noisy environments is a challenge for both cochlear implant (CI) users and device manufacturers. CI manufacturers have been investing in technological innovations for processors and researching strategies to improve signal processing and signal design for better aesthetic acceptance and everyday use. PURPOSE: This study aimed to compare speech recognition in CI users using off-the-ear (OTE) and behind-the-ear (BTE) processors. DESIGN: A cross-sectional study was conducted with 51 CI recipients, all users of the BTE Nucleus 5 (CP810) sound processor. Speech perception performances were compared in quiet and noisy conditions using the BTE sound processor Nucleus 5 (N5) and OTE sound processor Kanso. Each participant was tested with the Brazilian-Portuguese version of the hearing in noise test using each sound processor in a randomized order. Three test conditions were analyzed with both sound processors: (i) speech level fixed at 65 decibel sound pressure level in a quiet, (ii) speech and noise at fixed levels, and (iii) adaptive speech levels with a fixed noise level. To determine the relative performance of OTE with respect to BTE, paired comparison analyses were performed. RESULTS: The paired t-tests showed no significant difference between the N5 and Kanso in quiet conditions. In all noise conditions, the performance of the OTE (Kanso) sound processor was superior to that of the BTE (N5), regardless of the order in which they were used. With the speech and noise at fixed levels, a significant mean 8.1 percentage point difference was seen between Kanso (78.10%) and N5 (70.7%) in the sentence scores. CONCLUSION: CI users had a lower signal-to-noise ratio and a higher percentage of sentence recognition with the OTE processor than with the BTE processor.

Long-term effects of gasification biochar application on soil functions in a Mediterranean agroecosystem: Higher addition rates sequester more carbon but pose a risk to soil faunal communities.

Biochar applications can have important implications for many of the soil functions upon which agroecosystems rely, particularly regarding organic carbon storage. This study evaluated the impacts of adding a highly aromatic gasification biochar at different rates (0, 12 and 50 t ha-1) to a barley crop on the provision of crucial soil functions (carbon sequestration, water content, greenhouse gas emissions, nutrient cycling, soil food web functioning, and food production). After natural ageing in the field for six years, a wide range of soil properties representative of the studied soil functions were measured and integrated into a soil quality index. Results showed that C sequestration increased with biochar rate (23 and 68% higher than in the control for the 12 and 50 t biochar ha-1 treatments, respectively). Water content was enhanced at the 50 t ha-1 treatment depending on the sampling date. Despite biochar additions neither abating nor increasing CO2 equivalent emissions (carbon dioxide plus nitrous oxide and methane), the system shifted from being a methane sink (-0.017 ± 0.01 mg CH4-C m-2 h-1 at the 12 t ha-1 treatment), to a net source (0.025 ± 0.02 mg CH4-C m-2 h-1 at the 50 t ha-1 treatment). In addition, biochar ageing provoked a loss of nitrate mitigation potential, and indeed ammonium production was stimulated at the 50 t ha-1 rate. The 50 t ha-1 treatment also adversely affected nematode and collembolan functional diversity. Lastly, biochar did not affect barley yield. The results of the soil quality index indicated that no biochar treatment provided more benefits to our agricultural soil, and, although the 50 t ha-1 treatment increased C sequestration, this was potentially offset by its harmful effects on soil faunal communities. Therefore, application of this biochar at high rates should be avoided to prevent risks to soil biological communities.

Fresh biochar application provokes a reduction of nitrate which is unexplained by conventional mechanisms.

Soil-applied biochar has been reported to possess the potential to mitigate nitrate leaching and thus, exert beneficial effects beyond carbon sequestration. The main objective of the present study is to confirm if a pine gasification biochar that has proven able to decrease soil-soluble nitrate in previous research can indeed exert such an effect and to determine by which mechanism. For this purpose, lysimeters containing soil-biochar mixtures at 0, 12 and 50 t biochar ha-1 were investigated in two different scenarios: a fresh biochar scenario consisting of fresh biochar and a fallow-managed soil, and an aged biochar scenario with a 6-yr naturally aged biochar in a crop-managed soil. Soil columns were assessed under a mimicked Mediterranean ambient within a greenhouse setting during an 8-mo period which included a barley crop cycle. A set of parameters related to nitrogen cycling, and particularly to mechanisms that could directly or indirectly explain nitrate content reduction (i.e., sorption, leaching, microbially-mediated processes, volatilisation, plant uptake, and ecotoxicological effects), were assessed. Specific measurements included soil solution and leachate ionic composition, microbial biomass and activity, greenhouse gas (GHG) emissions, N and O isotopic composition of nitrate, crop yield and quality, and ecotoxicological endpoints, among others. Nitrate content reduction in soil solution was verified for the fresh biochar scenario in both 12 and 50 t ha-1 treatments and was coupled to a significant reduction of chloride, sodium, calcium and magnesium. This effect was noticed only after eight months of biochar application thus suggesting a time-dependent process. All other mechanisms tested being discarded, the formation of an organo-mineral coating emerges as a plausible explanation for the ionic content decrease.

Sound Localization Test in Presence of Noise (Sound Localization Test) in Adults without Hearing Alteration

Abstract Introduction Even people with normal hearing may have difficulties locating a sound source in unfavorable sound environments where competitive noise is intense. Objective To develop, describe, validate and establish the normality curve of the sound localization test. Method The sample consisted of 100 healthy subjects with normal hearing, > 18 years old,who agreed to participate in the study. The sound localization testwas applied after the subjects underwent a tonal audiometry exam. For this purpose, a calibrated free field test environment was set up. Then, 30 randompure tones were presented in 2 speakers placed at 45° (on the right and on the left sides of the subject), and the noise was presented froma 3rd speaker, placed at 180°. The noise was presented in 3 hearing situations: optimal listening condition (no noise), noise in relation to 0 dB, and noise in relation to - 10 dB. The subject was asked to point out the side where the pure tone was being perceived, even in the presence of noise. Results All of the 100 participants performed the test in an average time of 99 seconds. The average score was 21, the medium score was 23, and the standard deviation was 3.05. Conclusion The sound localization test proved to be easy to set-up and to apply. The results obtained in the validation of the test suggest that individuals with normal hearing should locate 70% of the presented stimuli. The test can constitute an important instrument in the measurement of noise interference in the ability to locate the sound.

Comparing Individuals through the Speech Recognition Test Applied to Regional Live Voice and Recorded Speeches from Paraná State in Five Brazilian Counties

Abstract Introduction Speech tests such as logoaudiometry measure the ability to perceive and recognize oral sounds. The Speech Recognition Index (SRI) is one of the speech tests adopted in clinical routine; it uses standardized live voice and recorded speeches. The live voice speech method can be influenced by intra and interspeaker variability, as well as by regionalism variability, whereas recorded tests show consistency in their presentation. Objective Analyzing results of the SRI test applied to live voiceand recorded speeches from Paraná State, in different Brazilian counties. Method The sample comprised 125 individuals, 25 fromeach county (Rio de Janeiro, Florianópolis, Porto Alegre, Salvador and Curitiba), from both sexes, in the age group 20 to 70 years; the SRI was applied in both techniques. Results The recorded speech method showed prevalence of hit improvement in Rio de Janeiro (40%), Salvador, Porto Alegre and Florianópolis (28%). Individuals from Salvador and Florianópolis subjected to the recorded speech method showed better results in the left ear. Individuals from Rio de Janeiro and Porto Alegre showed satisfactory results in both ears, whereas those from Curitiba did not show statistically significant difference between the left and the right ear. Conclusion The recorded CD application method showed prevalence of hit improvement (%) in the SRI responses in comparison to the live voice speech technique in most of the studied counties. According to the hit rate measured in the herein investigated counties, Rio de Janeiro showed the best results in the recorded speech method.

Comparing Individuals through the Speech Recognition Test Applied to Regional Live Voice and Recorded Speeches from Paraná State in Five Brazilian Counties.

Introduction Speech tests such as logoaudiometry measure the ability to perceive and recognize oral sounds. The Speech Recognition Index (SRI) is one of the speech tests adopted in clinical routine; it uses standardized live voice and recorded speeches. The live voice speech method can be influenced by intra and interspeaker variability, as well as by regionalism variability, whereas recorded tests show consistency in their presentation. Objective Analyzing results of the SRI test applied to live voice and recorded speeches from Paraná State, in different Brazilian counties. Method The sample comprised 125 individuals, 25 from each county (Rio de Janeiro, Florianópolis, Porto Alegre, Salvador and Curitiba), from both sexes, in the age group 20 to 70 years; the SRI was applied in both techniques. Results The recorded speech method showed prevalence of hit improvement in Rio de Janeiro (40%), Salvador, Porto Alegre and Florianópolis (28%). Individuals from Salvador and Florianópolis subjected to the recorded speech method showed better results in the left ear. Individuals from Rio de Janeiro and Porto Alegre showed satisfactory results in both ears, whereas those from Curitiba did not show statistically significant difference between the left and the right ear. Conclusion The recorded CD application method showed prevalence of hit improvement (%) in the SRI responses in comparison to the live voice speech technique in most of the studied counties. According to the hit rate measured in the herein investigated counties, Rio de Janeiro showed the best results in the recorded speech method.

Sound Localization Test in Presence of Noise (Sound Localization Test) in Adults without Hearing Alteration.

Introduction Even people with normal hearing may have difficulties locating a sound source in unfavorable sound environments where competitive noise is intense. Objective To develop, describe, validate and establish the normality curve of the sound localization test. Method The sample consisted of 100 healthy subjects with normal hearing, > 18 years old, who agreed to participate in the study. The sound localization test was applied after the subjects underwent a tonal audiometry exam. For this purpose, a calibrated free field test environment was set up. Then, 30 random pure tones were presented in 2 speakers placed at 45° (on the right and on the left sides of the subject), and the noise was presented from a 3 rd speaker, placed at 180°. The noise was presented in 3 hearing situations: optimal listening condition (no noise), noise in relation to 0 dB, and noise in relation to - 10 dB. The subject was asked to point out the side where the pure tone was being perceived, even in the presence of noise. Results All of the 100 participants performed the test in an average time of 99 seconds. The average score was 21, the medium score was 23, and the standard deviation was 3.05. Conclusion The sound localization test proved to be easy to set-up and to apply. The results obtained in the validation of the test suggest that individuals with normal hearing should locate 70% of the presented stimuli. The test can constitute an important instrument in the measurement of noise interference in the ability to locate the sound.

Brazilian Scale of Hearing and Language Development: Normality Curve for Infants and Children from 0 to 24 Months Old with Normal Hearing.

Introduction Cochlear implants are currently the most effective technological resource to facilitate access to the hearing world for deaf people. Their use, especially when implanted early in children, reduces the impact of deafness on hearing as well as on the development of spoken language. Objective To validate the first part of the Brazilian Scale of Hearing and Language Development (EDAL-1, in the Portuguese acronym) and to establish the normal curve in infants and children aged between 0 and 24 months old with normal hearing. Method This is an experimental study of a descriptive nature, conducted with 92 infants and children with normal hearing. Every infant/child was evaluated audiologically, and the EDAL-1 was applied to their parents. The responses were categorized by applying the EDAL-1 every 3 months for each child. Results The EDAL-1 was shown to be easily applied by the researcher and easily understood by the parents. It was possible to classify the sample every 3 months and describe the results. The average of the responses found in terms of scores for each age category shows an increasing scale following the evolution of the chronological age: 3 months-34.23 points; 6 months-54.68 points; 9 months-73 points; 12 months-82.5 points; 15 months-87 points; 18 months-91 points; 21 months-92.5 points, and 24 months-95.83 points. Conclusion The normal curve for EDAL-1 was successfully established. The averages can be considered as the standard protocol for normality, serving as a reference for comparison with other populations.

Hormones and Auditory Perception: Study of Dichotic Listening in Women during the Menstrual Cycle

Abstract Introduction Dichotic listening refers to the ability to hear different sounds presented to each ear simultaneously. Objective The aim of the present study was to assess dichotic listening in women throughout the menstrual cycle. Methods The volunteers who met the eligibility criteria participated in a dichotic listening assessment composed of three tests: 1) staggered spondaic word test; 2) dichotic digits test; and 3) consonant-vowel test. The female participants were tested during two different phases of the menstrual cycle: the follicular (days 11 to 13) and luteal (days 23 to 26) phases. The phases were confirmed by measuring serum levels of the hormone estradiol. Results A total of 20 volunteers aged 18 to 49 years participated in the study (9 females and 11 males). In test 1, only the right ear of females showed better performance during the follicular phase (high estrogen levels), compared with the luteal phase (low estrogen levels); in test 2, there were no significant differences for any of the groups; and in test 3, both males and females showed significantly better performance in their right ear compared with their left ear. Conclusion The better performance of females during the follicular phase of the cycle may indicate that estrogen levels might have an influence on dichotic listening in women. (AU)

Hormones and Auditory Perception: Study of Dichotic Listening in Women during the Menstrual Cycle.

Introduction Dichotic listening refers to the ability to hear different sounds presented to each ear simultaneously. Objective The aim of the present study was to assess dichotic listening in women throughout the menstrual cycle. Methods The volunteers who met the eligibility criteria participated in a dichotic listening assessment composed of three tests: 1) staggered spondaic word test; 2) dichotic digits test; and 3) consonant-vowel test. The female participants were tested during two different phases of the menstrual cycle: the follicular (days 11 to 13) and luteal (days 23 to 26) phases. The phases were confirmed by measuring serum levels of the hormone estradiol. Results A total of 20 volunteers aged 18 to 49 years participated in the study (9 females and 11 males). In test 1, only the right ear of females showed better performance during the follicular phase (high estrogen levels), compared with the luteal phase (low estrogen levels); in test 2, there were no significant differences for any of the groups; and in test 3, both males and females showed significantly better performance in their right ear compared with their left ear. Conclusion The better performance of females during the follicular phase of the cycle may indicate that estrogen levels might have an influence on dichotic listening in women.

Brazilian scale of hearing and language development: normality curve for infants and children from 0 to 24 months old with normal hearing

Introduction: Cochlear implants are currently the most effective technological resource to facilitate access to the hearing world for deaf people. Their use, especially when implanted early in children, reduces the impact of deafness on hearing as well as on the development of spoken language. Objective: To validate the first part of the Brazilian Scale of Hearing and Language Development (EDAL-1, in the Portuguese acronym) and to establish the normal curve in infants and children aged between 0 and 24 months old with normal hearing. Method: This is an experimental study of a descriptive nature, conducted with 92 infants and children with normal hearing. Every infant/child was evaluated audiologically, and the EDAL-1 was applied to their parents. The responses were categorized by applying the EDAL-1 every 3 months for each child. Results: The EDAL-1 was shown to be easily applied by the researcher and easily understood by the parents. It was possible to classify the sample every 3 months and describe the results. The average of the responses found in terms of scores for each age category shows an increasing scale following the evolution of the chronological age: 3 months-34.23 points; 6 months-54.68 points; 9 months-73 points; 12 months- 82.5 points; 15 months-87 points; 18 months-91 points; 21 months-92.5 points, and 24 months-95.83 points. Conclusion: The normal curve for EDAL-1 was successfully established. The averages can be considered as the standard protocol for normality, serving as a reference for comparison with other populations (AU)

Pitch-Matching Accuracy and Temporal Auditory Processing

Abstract Introduction Pitch-matching refers to the ability to vocally reproduce an acoustic model in a corresponding tone to the presented sound. This ability, which is dependent on pitch perception ability, can vary among individuals, and some are not able to sing in the correct tune or discriminate differences between tones. Objective To correlate pitch-matching accuracy and auditory processing in individuals without musical training. Methods A Pitch-Matching Test (vocal reproduction of synthesized and human voice sounds) and two commercially available tests of auditory temporal processing (the Pitch Pattern Sequence Test and the Random Gap DetectionTest) were administered to all participants. A total of 62 college students of both genders, aged between 18 and 35 years old, were divided into 2 groups, according to their performances in the Pitch- Matching Test (the accurate match group and the inaccurate match group). Results In the Pitch-Matching Test, both groups achieved better results when reproducing vocalized sounds. The accurate match group achieved a significantly higher pitch pattern sequence test performance. In the Random Gap Detection Test analysis, there were no differences between the two groups. The Pearson's chi-squared test showed a direct correlation between the Pitch-Matching Test and the Pitch Pattern Sequence Test. Conclusion The findings of this study suggest the existence of a significant relationship between temporal auditory processing and pitch-matching, through which accurate pitch-matching individuals perform better in the Pitch Pattern Sequence Test. Inaccurate pitch-matching individuals may be skilled at discriminating pitch, despite their poor performance in the Pitch-Matching Test.

Pitch-Matching Accuracy and Temporal Auditory Processing.

Introduction Pitch-matching refers to the ability to vocally reproduce an acoustic model in a corresponding tone to the presented sound. This ability, which is dependent on pitch perception ability, can vary among individuals, and some are not able to sing in the correct tune or discriminate differences between tones. Objective To correlate pitch-matching accuracy and auditory processing in individuals without musical training. Methods A Pitch-Matching Test (vocal reproduction of synthesized and human voice sounds) and two commercially available tests of auditory temporal processing (the Pitch Pattern Sequence Test and the Random Gap Detection Test) were administered to all participants. A total of 62 college students of both genders, aged between 18 and 35 years old, were divided into 2 groups, according to their performances in the Pitch-Matching Test (the accurate match group and the inaccurate match group). Results In the Pitch-Matching Test, both groups achieved better results when reproducing vocalized sounds. The accurate match group achieved a significantly higher pitch pattern sequence test performance. In the Random Gap Detection Test analysis, there were no differences between the two groups. The Pearson's chi-squared test showed a direct correlation between the Pitch-Matching Test and the Pitch Pattern Sequence Test. Conclusion The findings of this study suggest the existence of a significant relationship between temporal auditory processing and pitch-matching, through which accurate pitch-matching individuals perform better in the Pitch Pattern Sequence Test. Inaccurate pitch-matching individuals may be skilled at discriminating pitch, despite their poor performance in the Pitch-Matching Test.

Weed suppression greatly increased by plant diversity in intensively managed grasslands: A continental-scale experiment.

Grassland diversity can support sustainable intensification of grassland production through increased yields, reduced inputs and limited weed invasion. We report the effects of diversity on weed suppression from 3 years of a 31-site continental-scale field experiment.At each site, 15 grassland communities comprising four monocultures and 11 four-species mixtures based on a wide range of species' proportions were sown at two densities and managed by cutting. Forage species were selected according to two crossed functional traits, "method of nitrogen acquisition" and "pattern of temporal development".Across sites, years and sown densities, annual weed biomass in mixtures and monocultures was 0.5 and 2.0 t  DM ha-1 (7% and 33% of total biomass respectively). Over 95% of mixtures had weed biomass lower than the average of monocultures, and in two-thirds of cases, lower than in the most suppressive monoculture (transgressive suppression). Suppression was significantly transgressive for 58% of site-years. Transgressive suppression by mixtures was maintained across years, independent of site productivity.Based on models, average weed biomass in mixture over the whole experiment was 52% less (95% confidence interval: 30%-75%) than in the most suppressive monoculture. Transgressive suppression of weed biomass was significant at each year across all mixtures and for each mixture.Weed biomass was consistently low across all mixtures and years and was in some cases significantly but not largely different from that in the equiproportional mixture. The average variability (standard deviation) of annual weed biomass within a site was much lower for mixtures (0.42) than for monocultures (1.77). Synthesis and applications. Weed invasion can be diminished through a combination of forage species selected for complementarity and persistence traits in systems designed to reduce reliance on fertiliser nitrogen. In this study, effects of diversity on weed suppression were consistently strong across mixtures varying widely in species' proportions and over time. The level of weed biomass did not vary greatly across mixtures varying widely in proportions of sown species. These diversity benefits in intensively managed grasslands are relevant for the sustainable intensification of agriculture and, importantly, are achievable through practical farm-scale actions.

Escala de desenvolvimento auditivo e de linguagem na criança implantada / Hearing and language development scale in cochlear implanted children

RESUMO Objetivo Caracterizar o desempenho auditivo e de linguagem oral em crianças implantadas com menos de dois anos de idade auditiva, por meio da Escala de Desenvolvimento de Audição e Linguagem (EDAL-1) e comparar os resultados aos de crianças ouvintes até 2 anos de idade. Métodos Estudo experimental de caráter descritivo. Participaram 141 crianças, divididas em dois grupos: grupo controle, com 92 normo-ouvintes, e grupo experimental, com 49 crianças surdas acompanhadas audiologicamente, durante os dois primeiros anos após a implantação. As normo-ouvintes passaram por avaliação auditiva e os pais responderam ao questionário EDAL-1. As crianças implantadas passaram por avaliação otorrinolaringológica e fonoaudiológica a cada três meses e os pais responderam ao EDAL-1. Resultados Nos dois grupos foram observadas respostas ascendentes, com melhora de acordo com o aumento da idade cronológica. Os resultados obtidos no grupo experimental foram estatisticamente piores que no grupo controle, porém, com tendência de crescimento. O EDAL-1 mostrou-se de fácil aplicação e permitiu o monitoramento do desempenho das crianças implantadas. Conclusão O desempenho auditivo e de linguagem oral em crianças surdas, usuárias de implante coclear, foi caracterizado pelo EDAL-1 e mostrou-se em crescimento, conforme o aumento do tempo de estimulação auditiva, fato também observado nas crianças ouvintes. Apesar disso, os resultados das crianças ouvintes foram melhores que os das crianças surdas implantadas.

ABSTRACT Purpose To characterize Auditory and oral language performance in children under 2 years of age with Hearing and Language Development Scale (EDAL-1) and to compare the results to those of hearing children up to two years of age. Methods This is an experimental study of descriptive nature. A total of 141 children were divided into two groups: control group with 92 normal hearing, and the experimental group with 49 deaf children followed audiologically during the first two years after implantation. Normal hearing children underwent auditory assessment and parents responded to EDAL-1. The children implanted, every three months, underwent otorhinolaryngological and speech-language evaluation, and the parents answered EDAL-1. Results In both groups we observed upward responses, with improvement as chronological and auditory age increases. Results obtained in the study group are statistically worse than in the control group, but with a tendency to grow. EDAL-1 was easy to apply and allowed to monitor the performance of the implanted children. Conclusion Oral and auditory performance in deaf children with cochlear implants was characterized by EDAL-1, and it was shown to be growing as the time of auditory stimulation increased, a fact also seen in hearing children. Despite this, the results of the hearing children were better than those of the deaf children implanted.

Free Field Word recognition test in the presence of noise in normal hearing adults / Teste de reconhecimento de palavras em campo livre na presença de ruído em indivíduos adultos normo-ouvintes

Abstract Introduction: In ideal listening situations, subjects with normal hearing can easily understand speech, as can many subjects who have a hearing loss. Objective: To present the validation of the Word Recognition Test in a Free Field in the Presence of Noise in normal-hearing adults. Methods: Sample consisted of 100 healthy adults over 18 years of age with normal hearing. After pure tone audiometry, a speech recognition test was applied in free field condition with monosyllables and disyllables, with standardized material in three listening situations: optimal listening condition (no noise), with a signal to noise ratio of 0 dB and a signal to noise ratio of −10 dB. For these tests, an environment in calibrated free field was arranged where speech was presented to the subject being tested from two speakers located at 45°, and noise from a third speaker, located at 180°. Results: All participants had speech audiometry results in the free field between 88% and 100% in the three listening situations. Conclusion: Word Recognition Test in Free Field in the Presence of Noise proved to be easy to be organized and applied. The results of the test validation suggest that individuals with normal hearing should get between 88% and 100% of the stimuli correct. The test can be an important tool in measuring noise interference on the speech perception abilities.

Resumo Introdução: Em situações ideais de escuta, indivíduos com audição normal conseguem fazer e reconhecer a fala facilmente. Porém, na presença de ruído competitivo, é comum as pessoas sentirem dificuldades de compreensão, principalmente se tiverem perda auditiva. Objetivo: Apresentar a validação do teste de reconhecimento de palavras em campo livre na presença do ruído em indivíduos adultos normo-ouvintes. Método: A amostra foi composta por 100 sujeitos hígidos, com audição normal e maiores de 18 anos. Depois da audiometria tonal foi aplicado teste de reconhecimento da fala, com monossílabos e dissílabos, em campo livre, com material padronizado, em três situações de escuta: condição ótima de audição (sem ruído), com ruído em relação de 0 dB e com ruído em relação de −10 dB. Para tanto, montou-se um ambiente de teste em campo livre calibrado, no qual a fala foi apresentada ao indivíduo em teste com duas caixas acústicas a 45° e o ruído em uma terceira a 180°. Resultados: Todos os participantes tiveram resultados de logoaudiometria em campo livre entre 88 e 100% nas três situações de escuta. Conclusão: O teste de reconhecimento de palavras em campo livre na presença do ruído mostrou-se de fácil organização e aplicação. Os resultados obtidos na validação do teste sugerem que indivíduos com audição normal devem acertar entre 88 e 100% dos estímulos apresentados. O teste pode configurar um instrumento importante na mensuração da interferência do ruído sobre as habilidades de percepção de fala.

Avaliação da percepção auditiva em mulheres durante ciclo menstrual: revisão sistemática / Evaluation of auditory perception in women during menstrual cycle: a systematic review / Percepción de evaluación de audiencia sobre la mujer durante el ciclo menstrual: revisión sistemática

Introdução: As flutuações hormonais que ocorrem normalmente durante o ciclo menstrual podem interferir no sistema auditivo. A alteração mais encontrada neste período é a diminuição da acuidade auditiva, que parece estar mais associada à flutuação dos níveis de estrogênio, quando este se encontra reduzido na fase lútea final do período menstrual. Objetivo: Investigar por meio de uma revisão sistemática a percepção auditiva de mulheres durante as fases do ciclo menstrual. Método: Foi realizada uma busca nas bases de dados eletrônicas, nacionais e internacionais, LILACS, MEDLINE, PubMed e SciELO, através da consulta pelos seguintes descritores: "percepção auditiva" AND "ciclo menstrual", "percepção de fala" AND "ciclo menstrual", "percepção de fala" AND "hormônios" e seus correspondentes na língua inglesa. Resultados: Dos 293 artigos encontrados, foram selecionados apenas 7 artigos, após os critérios de inclusão e exclusão. A caracterização da amostra dos artigos selecionados variou entre 15 a 39 mulheres, com idade variando entre 17 e 46 anos. Na maioria dos artigos, nenhum tipo de procedimento clínico para estimar as fases do ciclo menstrual foi utilizado. Foi observada a realização de testes de percepção auditiva nos sete artigos selecionados, tendo destaque os testes dicóticos. Conclusão: Há necessidade da realização de mais pesquisas sobre o assunto, exigindo-se também maior rigor metodológico na elaboração desses estudos, através de procedimentos clínicos seguros e padronizados para mensuração dos níveis hormonais.

Introduction: Hormonal fluctuations that normally occur during the menstrual cycle can interfere with the audio system. The change most found in this period is the reduction of auditory acuity, which seems to be more related to fluctuating estrogen levels, when it is reduced in the luteal phase of the menstrual period end. Objective: Investigate through a systematic review hearing in women during the menstrual cycle phases. Method: A search was made in the electronic databases, national and international, LILACS, MEDLINE, PubMed and SciELO, by consulting the following descriptors: "auditory perception" and "menstrual cycle", "speech perception" and "menstrual cycle", "speech perception" and "hormones" and their corresponding in Portuguese. Results: Twenty-two articles were found, but only 7 articles were chosen after the criteria for inclusion and exclusion. The amount of the sample of selected articles ranged between 15 and 39 women, aged between 17 and 46 years old. In most articles, any type of medical procedure to estimate the phases of the menstrual cycle was used. The performance of auditory perception tests in the seven selected articles was observed, highlighted with the dichotic tests. Conclusion: There is a need of further research on the subject, demanding a greater methodological rigor in the preparation of these studies, through clinical safe and standardized to measure hormone levels procedures.

Introducción: Las fluctuaciones hormonales que ocurren normalmente durante el ciclo menstrual puede interferir con el sistema de audio. El hallazgo más frecuente en este periodo es la reducción de la agudeza auditiva, lo que parece estar más relacionado con la fluctuación de los niveles de estrógenos, cuando se reduce en la fase lútea del final del periodo menstrual. Objetivos: Investigar a través de una revisión sistemática de la percepción auditiva de la mujer durante las fases del ciclo menstrual. Métodos: Se realizó una búsqueda en bases de datos electrónicas, nacionales e internacionales, LILACS, MEDLINE, PubMed y SciELO, mediante la consulta de los siguientes descriptores: "la percepción auditiva" Y "ciclo menstrual", "la percepción del habla" Y "ciclo menstrual", "la percepción del habla" y "hormonas" y sus homólogos en el idioma Inglés. Resultados: De los 293 artículos encontrados, se seleccionaron sólo 7 artículos, después de que los criterios de inclusión y exclusión. La caracterización de la muestra de los artículos seleccionados osciló entre 15 y 39 mujeres, con edades comprendidas entre los 17 y 46 años. En la mayoría de los artículos, cualquier tipo de procedimiento médico para estimación se utilizan las fases del ciclo menstrual. el rendimiento de la prueba de percepción auditiva se observó en los siete elementos seleccionados, resalte que tiene dicóticos. Conclusión: Existe la necesidad de más investigación sobre el tema, lo que requiere también mayor rigor metodológico en la elaboración de estos estudios, através de procedimientos clínicos segura y estandarizada para medir los niveles hormonales.

Perception of Noise Pollution in a Youth and Adults School in Curitiba-PR.

Introduction Nowadays noise remains the third largest cause of environmental pollution on Earth. It appears that despite the existing noise control legislation the issue deserves further supervision by the public authorities so that the ceilings established for the various activities are observed. People exposed to noise are more likely to develop numerous auditory and non-auditory problems directly impacting persona family and working life. Objectives The objective of this study is to research and consequently understand how the population of students of a youth and adult school in Curitiba perceives noise pollution as well as look into the actions that the school adopts in order to guide the students on the topic. Method We applied a structured questionnaire to 120 individuals and assessed the following variables: characterization of the place of residence occupation leisure health and perception of soundscapes. We also applied a closed questionnaire about educational actions for noise pollution to the school's geography teacher. Results Questionnaire responses show that people perceive noise in the most diverse environments they frequent and are able to identify the source of the noise but this perception proved fragile as the majority does not take measures to prevent or mitigate these noises. At school there are no actions aimed at environmental education on the subject studied. Conclusion The studied group does not perceive the noise as a harmful agent and does not prevent themselves from it and the school not work contents related to noise pollution leaving a significant gap in the awareness process of this population.

Perception of Noise Pollution in a Youth and Adults School in Curitiba-PR

Abstract Introduction Nowadays noise remains the third largest cause of environmental pollution on Earth. It appears that despite the existing noise control legislation the issue deserves further supervision by the public authorities so that the ceilings established for the various activities are observed. People exposed to noise are more likely to develop numerous auditory and non-auditory problems directly impacting persona family and working life. Objectives The objective of this study is to research and consequently understand how the population of students of a youth and adult school in Curitiba perceives noise pollution as well as look into the actions that the school adopts in order to guide the students on the topic. Method We applied a structured questionnaire to 120 individuals and assessed the following variables: characterization of the place of residence occupation leisure health and perception of soundscapes. We also applied a closed questionnaire about educational actions for noise pollution to the school's geography teacher. Results Questionnaire responses show that people perceive noise in the most diverse environments they frequent and are able to identify the source of the noise but this perception proved fragile as themajority does not takemeasures to prevent ormitigate these noises. At school there are no actions aimed at environmental education on the subject studied. Conclusion The studied group does not perceive the noise as a harmful agent and does not prevent themselves from it and the school not work contents related to noise pollution leaving a significant gap in the awareness process of this population.

Implante coclear e qualidade de vida: estudo com pais e familiares de crianças surdas / Cochlear implant and quality of life: a study with parents and families of deaf children / Implante coclear y calidad de vida: un estudio con padres y familias de niños sordos

Introdução: O implante coclear é uma solução auditiva concretizada no cenário brasileiro, constituindo-se uma estratégia viável de reabilitação auditiva para perdas auditivas severas e profundas. Porém, apesar dos grandes avanços tecnológicos e dos excelentes resultados obtidos e descritos na literatura, ter um filho implantado pode comprometer a qualidade de vida dos familiares envolvidos no processo. Objetivo: Comparar a qualidade de vida de um grupo de pais e familiares que possuem filhos usuários de implante coclear, antes e depois da implantação. Método: Trata-se de um estudo clínico descritivo transversal. Participaram 30 indivíduos que foram submetidos ao questionário WHOQOLBref antes da cirurgia e depois de seis meses de ativação do implante. O escore geral e os dados relativos aos quatro domínios abrangidos (físico, psicológico, meio ambiente e relações sociais) foram analisados e descritos. Resultados: Houve mudança positiva significativa para os escores dos domínios de meio ambiente e relações sociais do instrumento. Não houve diferença significativa no escore geral e nos domínios físico e psicológico. Conclusão: Foi possível comparar a qualidade de vida de um grupo de pais de crianças usuárias de IC, antes e depois do processo cirúrgico e ativação do dispositivo. A implantação gerou melhora significativa nos domínios: meio ambiente e relações sociais, evidenciando que houve melhora da qualidade de vida dos pais entrevistados.

Introduction: The cochlear implant is a hearing solution implemented in the Brazilian scenario, becoming a viable strategy for auditory rehabilitation for severe and profound hearing loss. However, despite the great technological advancements and the excellent results obtained and described in the literature, having an implanted child can compromise the quality of life of the families involved in the process. Objective: Compare the quality of life of a group of parents and families who have children users of cochlear implants, before and after implantation. Method: This is a cross-sectional clinical study. The participants were 30 individuals that were submitted to the WHOQOL- Bref questionnaire before surgery and after six months of implant activation. The overall score and the data for the four areas covered (physical, psychological, environmental and social relations) were analyzed and described. Results: There was a significant positive change to the scores of environmental and social relationships domains of the instrument. There was no significant difference in the overall score or on the physical and psychological domains. Conclusion: It was possible to compare the quality of life of a group of parents of children using CI before and after the surgical process and device activation. The implantation has generated significant improvement in the environment and social relationships areas, showing an improvement in the quality of life of the interviewed parents.

Introducción: El implante coclear es una solución auditiva concretizada en la escena brasileña, que se constituye como estrategia de rehabilitación auditiva viable para la pérdida de audición severa y profunda. Sin embargo, a pesar de los grandes avances tecnológicos y los excelentes resultados obtenidos y descritos en la literatura, tener un niño implantado puede comprometer la calidad de vida de las familias involucradas en el proceso. Objetivo: Comparar la calidad de vida de un grupo de padres y familias que tienen niños usuarios de implantes cocleares, antes y después de la implantación. Método: Se trata de un estudio clínico descriptivo transversal. Se incluyeron 30 individuos que se sometieron al cuestionario WHOQOL Bref antes de la cirugía y después de seis meses de la activación del implante. La puntuación global y los datos para los cuatro dominios cubiertos (físico, psicológico, medioambientales y relaciones sociales) fueron analizados y descritos. Resultados: Hubo un cambio positivo significativo de las puntuaciones en los dominios de las relaciones sociales y medioambientales del instrumento. No hubo diferencia significativa en la puntuación total y en los dominios físico y psicológico. Conclusión: Fue posible comparar la calidad de vida de un grupo de padres de niños que utilizan IC, antes y después del proceso quirúrgico y activación del dispositivo. La implantación ha generado una mejora significativa en los dominios medioambientales y relaciones sociales, demostrando una mejora en la calidad de vida de los padres entrevistados.