Blog Archives

Auditory processing and combination of distinctive features in speech acquisition in children with phonological disorders

CONCLUSION: The results obtained in the SSW and Dichotic Listening Test showed a deficit in the abilities of complex temporal order and figure-ground, as well as lagged sensorial memory. These deficits might jeopardize the acquisition of the features described.

from Revista de Sociedade Brasileira de Fonoaudiologia

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Stability of auditory evoked potentials in adults with normal hearing

CONCLUSION: Except for the N2-P3 amplitude, it was observed stability of the parameters of ABR, MLR and P300 in normal adults after a period of three months.

from Revista de Sociedade Brasileira de Fonoaudiologia

Test and retest of auditory processing: reliability of the evaluation

CONCLUSION: The CAP tests used in this study indicated their reliability through the test-retest.

from Revista de Sociedade Brasileira de Fonoaudiologia

Auditory processing and phonological awareness in children with normal and deviant speech development

CONCLUSION: a significant relationship between the performance in the AP evaluation and success in PA tasks exists for children with phonological disorders.

from Pró-Fono Revista de Atualização Científica

Otoacoustic emissions growth rate threshold – distortion product in neonates*

the procedure was feasible for the neonatal population revealing mean thresholds of up to 60dB for both frequencies. Even though participants presented elevated thresholds, robust amplitude responses were observed.

from Pró-Fono Revista de Atualização Científica

Auditory processing evaluation in Neurofibromatosis type 1

The aim of this study was to present the results obtained in the auditory processing evaluation of a patient with neurofibromatosis type 1. Although the patient presented normal peripheral hearing, auditory processing deficits were identified in several abilities. This finding, described for the first time in neurofibromatosis, might help to explain the cognitive and learning disabilities broadly described for this common genetic disorder.

from Revista de Sociedade Brasileira de Fonoaudiologia

Auditory temporal resolution in elderly people

CONCLUSION: The presence of hearing loss increased the gap detection thresholds and lowered the percentage of correct responses on the Gaps-in-Noise test.

from Revista de Sociedade Brasileira de Fonoaudiologia

Development of the Brazilian Portuguese version of the dichotic sentence identification test (DSI)

CONCLUSION: The compact disc with the Brazilian Portuguese version of the DSI test consisted of six tracks: calibration, practice, binaural integration, directed attention to the right and to the left ears and auditory training.

from Revista de Sociedade Brasileira de Fonoaudiologia

Auditory temporal resolution threshold in elderly individuals*

CONCLUSION: the average temporal resolution threshold for women was 104.81ms. Considering gender, females did not present correlations between age and audiometric configuration, not only when considering the RGDT results but also when analyzing the SAC results.

from Pró-Fono Revista de Atualização Científica

GIN Test (Gaps-in-Noise) in normal listeners with and without tinnitus*

CONCLUSION: the GIN test identified deficit in the hearing skill of temporal resolution in patients with tinnitus. In the studied age group (21 to 45 years) there was no correlation between age and the results obtained in the GIN test.

from Pró-Fono Revista de Atualização Científica

Expressive vocabulary and auditory processing in children with deviant speech acquisition*

CONCLUSION: there is a correlation between the auditory processing and the lexicon, where vocabulary can be influenced in children with deviant speech acquisition.

from Pró-Fono Revista de Atualização Científica

Audiologic findings and auditory-related complaints of urban bus drivers

CONCLUSION: This study showed a need for the development of preventive actions towards hearing health, in order to promote improvements on work conditions and hearing preservation of bus drivers.

from Revista de Sociedade Brasileira de Fonoaudiologia

An On-Line Imitative Test of Speech-Pattern Contrast Perception (OlimSpac): Developmental Effects in Normally Hearing Children

Conclusions: When evaluated on a pass/fail basis, normally hearing children 3 years of age or older are likely to demonstrate auditory perception of most phonemic contrasts using this imitative test. Phonological development and other task-related factors have only a modest effect on performance by normally hearing children after 3 years of age. The effects of hearing loss, hearing age, sensory assistance, and listening experience in children with hearing loss remain to be determined.

from the Journal of Speech, Language, and Hearing Research

Standard characterization of P300 in young adults

CONCLUSION: The latency values of the sample were not influenced by the variables gender, methodology of the testing situation and menstrual cycle, and were in accordance to the latency interval values between 220 and 380 ms. Amplitude values were influenced by gender and menstrual cycle, but were not in accordance to the values found in literature.

from Revista de Sociedade Brasileira de Fonoaudiologia

Validation of multi-channel auditory steady-state response in adults with sensorineural hearing loss

Objective: For various medico-legal and financial reasons, some patients may clinically demonstrate an exaggerated hearing loss that varies in degree, nature and laterality. The purpose of this study was to evaluate whether multi-channel auditory steady-state response measurement can be used as an objective test of auditory thresholds in adults with sensorineural hearing loss.

Study design and setting: This was a prospective, comparative, experimental research design study conducted in an academic medical centre. From January to June 2007, 142 subjects (284 ears) with varying degrees of sensorineural hearing loss were included. Four commonly used frequencies (500, 1000, 2000 and 4000 Hz) were evaluated. Both pure tone thresholds and multi-channel auditory steady-state response thresholds were obtained for each ear in all subjects. The correlation of auditory steady-state response thresholds and pure tone thresholds was assessed. The time taken for multi-channel auditory steady-state response testing was also recorded.

Results: Results for multi-channel auditory steady-state response thresholds and pure tone thresholds were compared for each test frequency. A difference of less than 15 dB was found in 71 per cent of patients, while a difference of less than 20 dB was found in 83 per cent. Correlation between auditory steady-state response thresholds and pure tone thresholds, expressed as the correlation coefficient (r), was 0.89, 0.95, 0.96 and 0.97 at 500, 1000, 2000 and 4000 Hz, respectively. The strength of the relationship between auditory steady-state response thresholds and pure tone thresholds increased with increasing frequency and increasing degree of hearing loss. The recorded auditory steady-state response thresholds were used to calculate regression lines predicting pure tone threshold results. The mean estimated pure tone thresholds calculated from these regression lines were all within 10 dB of the actual recorded pure tone thresholds. The average multi-channel auditory steady-state response test duration was 42 minutes per patient.

Conclusion: Measurement of multi-channel auditory steady-state response could be a powerful, convenient electro-physiological examination with which to objectively certify clinical hearing impairment in adults.

from the Journal of Laryngology and Otology