HAYDEE FISZBEIN WERTZNER
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina - Docente
LIM/34 - Laboratório de Ciências da Reabilitação, Hospital das Clínicas, Faculdade de Medicina
LIM/34 - Laboratório de Ciências da Reabilitação, Hospital das Clínicas, Faculdade de Medicina
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- Medidas aerodinâmicas, eletroglotográficas e acústicas na produção da fricativa pós-alveolar vozeada(2018) HASHIMOTO, Patrícia Tiemi; PAGAN-NEVES, Luciana de Oliveira; JESUS, Luis Miguel Teixeira de; WERTZNER, Haydée FiszbeinABSTRACT Purpose Describe and correlate phonological and complementary measures regarding aerodynamics, electroglottography, acoustics, and perceptual judgment of production of the voiced fricative sound /ʒ/ comparing the performance of Brazilian Portuguese-speaking children with and without speech sound disorders. Methods Study participants were 30 children aged 5 years to 7 years and 11 months divided into a group of children with typical development - Control Group (CG) and a group of children with speech sound disorders - Research Group (RG). Phonology (PCC, PCC-R, and occurrence of phonological processes) and the aerodynamic (amplitude of the oral airflow and f0), eletroglottographic (open quotient) and acoustic (classification of voicing) measures were evaluated. Results Numerically, children with speech sound disorders presented higher relative oral airflow amplitude, lower relative f0, and open quotient indicative of less efficient voicing production compared with those of children with typical development. The weak voicing values showed that 66.1% of the children with speech sound disorders presented weaker voicing of the fricative sound /ʒ/ compared with that of the posterior vowel sound, and between-groups comparison demonstrated that these children presented greater difficulty in voicing. The acoustic analysis of speech used to classify the weak/strong voicing showed variations, especially regarding the classification partially devoiced. Conclusion Results suggest that the strategies for voicing production and voicing maintenance of the fricative sound /ʒ/ are still variable in children aged 5 years to 7 years and 11 months; however, children with speech sound disorders seem to have more difficulties in using them effectively. In addition, the study shows the importance of applying complementary tests to obtain a more detailed diagnosis.
- Oral and Laryngeal Articulation Control of Voicing in Children with and without Speech Sound Disorders(2022) WERTZNER, Haydee Fiszbein; NEVES, Luciana Pagan; JESUS, Luis M. T.Voicing contrast is hard to master during speech motor development, and the phonological process of consonant devoicing is very frequent in children with Speech Sound Disorders (SSD). Therefore, the aim of this study was to characterise the oral and laryngeal articulation control strategies used by children with and without SSD as a function of place of articulation. The articulation rate and relative oral airflow amplitude (flow) were used to analyse how children controlled oral articulation; fundamental frequency (f(o)), open quotient (OQ), and a classification of voicing were used to explore laryngeal behaviour. Data from detailed speech and language assessments, oral airflow and electroglottography signals were collected from 13 children with SSD and 17 children without SSD, aged 5; 0 to 7; 8, using picture naming tasks. Articulation rate and flow in children with and without SSD were not significantly different, but a statistically reliable effect of place on flow was found. Children with and without SSD used different relative f(o) (which captures changes in f(o) during the consonant-vowel transition) and OQ values, and place of articulation had an effect on the strength of voicing. All children used very similar oral articulation control of voicing, but children with SSD used less efficient laryngeal articulation strategies (higher subglottal damping and more air from the lungs expelled in each glottal cycle) than children without SSD.
- Phonological characteristics of European and Brazilian Portuguese in children with Speech Sound Disorders(2021) MARTINS, Ana Catarina; NASCIMENTO, David; PINTO, Sofia; ALVES, Dina; WERTZNER, Haydee Fiszbein; CASTRO, AnaThis study aims to describe and compare the phonological characteristics of European Portuguese and Brazilian Portuguese preschool and school age children with Speech Sound Disorders (SSD). Speech samples for the European Portuguese Group (EPG) (n = 13) were collected using Subteste Fonetico e Fonologico of Teste Fonetico e Fonologico Avaliacao da Linguagem Pre-Escolar. For the Brazilian Portuguese Group (BPG) (n = 13) Prova de Nomeacao de Fonologia of Teste de Linguagem Infantil ABFW was applied. Different phonological measures were considered. Groups were matched according to sex, age, and percentage of correct consonants (revised). EPG presented more weak syllable deletion (p = .00); absolute index and relative index had a higher number of omissions (p = .003). BPG had more substitutions (p = .004). Intragroup analysis showed differences between groups in the occurrence of phonological processes (p <= 0.00). The most occurring was gliding of liquids, cluster reduction and devoicing in both groups; for the absolute index and relative index, the EPG presented differences in omission (p = .003), and the BPG in substitution (p = .002). Results suggested differences between groups in phonological processes occurrence and a relation with the most frequent type of error. These findings may occur due to the variation of phonetic and phonological characteristics between European Portuguese and Brazilian Portuguese in the two phonological tests. Linguistic variations had not directly influenced the measures studied, which characterized SSD. European Portuguese and Brazilian Portuguese children with SSD demonstrated similar characteristics as to the type of errors and phonological processes.