Normative values to Horus® computerized posturography in children.

Purpose: Propose normalization values of the Horus® computerized posturography platform, in children aged 4 to 6 years, without auditory and/or vestibular complaints.

Methods: Cross-sectional study, 216 children aged 4 to 6 years participated. All the children underwent to visual screening, audiological evaluation and computerized posturography, which consists of research on stability limits and seven sensory conditions.

Stroke in children and adolescents: Analysis of electrophysiological and behavioral assessment findings of auditory processing.

Purpose: This study aimed to analyze the auditory processing behavior of children and adolescents diagnosed with stroke and compare it with that of typically developing individuals.

Methods: This was an analytical cross-sectional study involving 48 participants aged between 7 and 17 years with adequate schooling for age and grade, allocated equally to two groups: Stroke (SG) and Control Groups (CG). For the SG, cases identified between 2003 and 2018 were considered.

Mismatch Negativity in Children and Adolescents with Autism Spectrum Disorder.

 Individuals with autism spectrum disorder (ASD) have abnormalities in auditory perception and sensitivity. The mismatch negativity (MMN) component of the evoked potential demonstrates a brain detection response to an auditory change due to memory, and enables the identification of changes in the auditory system.  To analyze MMN responses in children and adolescents with ASD and compare them with those of a control group.

Cortical auditory-evoked potential as a biomarker of central auditory maturation in term and preterm infants during the first 3 months.

Objectives: To analyze central auditory maturation in term and preterm infants during the first 3 months of life by comparing the latency and amplitude of cortical auditory-evoked potential at different frequencies.

Methods: In this study, 17 term and 18 preterm infants were examined; all had tested positive on the neonatal hearing screening test. Cortical auditory potential was investigated during the first and third months of life.

Hyperbilirubinemia impact on newborn hearing: a literature review.

The increase in bilirubin levels in newborns can cause toxic effects on the auditory system, which can lead to hearing loss. This review aimed to verify the impact of hyperbilirubinemia in the hearing of newborns, relating audiological findings to serum levels of bilirubin. A literature review was conducted during October 2017, using the terms "hyperbilirubinemia", "jaundice", "infant", "newborn" and "hearing loss", on databases CAPES journals, MEDLINE and BIREME (SciELO, BBO).

Long-latency auditory evoked potential in children with stuttering.

Objective: To analyze the latency and the amplitude values of Mismatch Negativity and P300 cognitive potential in children with stuttering, with no auditory complaints, with auditory thresholds within the normality range, comparing them to the findings of a Control Group.

Methods: A cross-sectional study involving 50 children of both sexes, 15 with stuttering and 35 without stuttering, aged 6 to 11 years, with no diagnosis of ear pathology or other diseases. All children were submitted to peripheral audiological evaluation (meatoscopy, pure tone testing, speech audiometry, and acoustic immittance measures) and a central audiological evaluation (investigation of the Mismatch Negativity and P300 cognitive potential).

Central auditory processing: behavioral and electrophysiological assessment of children and adolescents diagnosed with stroke.

Introduction: Central auditory processing refers to the efficiency and effectiveness with which the central nervous system uses auditory information: it may be altered in neurological disorders and brain injuries, such as strokes. However, despite evidence of probable alterations in the pediatric population, functional abilities and post-stroke limitations are still not well documented in the literature.

Objective: To analyze the findings of the electrophysiological and behavioral evaluations of central auditory processing of children and adolescents diagnosed with stroke from a reference outpatient clinic, as well as to investigate possible associations with the variables: type and location of the stroke and age group.

Cortical auditory evoked potential in assessment of neonates: a study about minimum level of responses in term and preterm newborns.

Introduction: The study of the threshold level of cortical auditory response in adults has been investigated in previous studies. Due to maturational issues, little is known about these responses in neonates. Technological advances with automatic analysis devices now allow investigation in specific populations.

Mismatch Negativity in Children: Reference Values.

 The Mismatch Negativity (MMN) auditory evoked potential evaluation is a promising procedure to assess objectively the ability of auditory discrimination.  To characterize the latency and amplitude values of MMN in children with normal auditory thresholds and without auditory complaints.  Children between 5 and 11 years old participated in the present study.

Auditory evoked potentials in children and adolescents with Down syndrome.

Down syndrome, or trisomy 21, is the most common genetic alteration in humans. The syndrome presents with several features, including hearing loss and changes in the central nervous system, which may affect language development in children and lead to school difficulties. The present study aimed to investigate group differences in the central auditory system by long-latency auditory evoked potentials and cognitive potential.

Air and Bone Conduction Frequency-specific Auditory Brainstem Response in Children with Agenesis of the External Auditory Canal.

 The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile.  The objective of our study was to compare the results obtained in tone-ABR by air and bone conduction in children until 12 months, with agenesis of the external auditory canal.

Auditory Evoked Potential Mismatch Negativity in Normal-Hearing Adults.

 Mismatch Negativity (MMN) corresponds to a response of the central auditory nervous system.  The objective of this study is to analyze MMN latencies and amplitudes in normal-hearing adults and compare the results between ears, gender and hand dominance.  This is a cross-sectional study.

Longitudinal Comparison of Auditory Steady-State Evoked Potentials in Preterm and Term Infants: The Maturation Process.

 Preterm neonates are at risk of changes in their auditory system development, which explains the need for auditory monitoring of this population. The Auditory Steady-State Response (ASSR) is an objective method that allows obtaining the electrophysiological thresholds with greater applicability in neonatal and pediatric population.  The purpose of this study is to compare the ASSR thresholds in preterm and term infants evaluated during two stages.

Hearing characterization in oculoauriculovertebral spectrum: A prospective study with 10 patients.

Oculoauriculovertebral spectrum (OAVS), also known as Goldenhar syndrome, is considered a condition associated to failing of embryogenesis involving the first and second branchial arches, leading to structural abnormalities arising from it. The aim of this study is to verify the hearing features presented by patients with OAVS and provide additional information that may contribute to improvement of speech therapy. The sample consisted of 10 individuals diagnosed with OAVS and cared for by the Clinical Genetics Service.

Cortical auditory evoked potentials in full-term and preterm neonates.

Purpose: To measure the exogenous components of the cortical auditory evoked potential (CAEP) in term and preterm newborns and compare them considering the variables latency and amplitude.

Methods: This is a cross-sectional, prospective, comparative, contemporary study. One hundred twenty-seven newborns were evaluated; 96 of these were included in the study after analysis of the exams by three referees.

Audiological findings in patients with oculo-auriculo-vertebral spectrum.

Introduction Oculo-auriculo-vertebral spectrum, also referred to as Goldenhar syndrome, is a condition characterized by alterations involving the development of the structures of the first and second branchial arches. The abnormalities primarily affect the face, the eyes, the spine, and the ears, and the auricular abnormalities are associated with possible hearing loss. Objective To analyze the audiological findings of patients with oculo-auriculo-vertebral spectrum through liminal pure-tone audiometry and speech audiometry test.

Importance of a multidisciplinary approach and monitoring in fetal warfarin syndrome.

Warfarin is a synthetic oral anticoagulant that crosses the placenta and can lead to a number of congenital abnormalities known as fetal warfarin syndrome. Our aim is to report on the follow-up from birth to age 8 years of a patient with fetal warfarin syndrome. He presented significant respiratory dysfunction, as well as dental and speech and language complications.

Correlation of the findings of auditory steady-state evoked potential and of behavioral hearing assessment in infants with sensorineural hearing loss.

Purpose: To correlate the findings of an open-field audiometry with the thresholds of steady-state auditory-evoked potentials (SSAEPs) found in infants of up to 6 months of age with sensorineural hearing loss.

Methods: This study included 19 infants with sensorineural hearing loss (8 males and 11 females), with minimum age of 2 months and maximum age of 6 months. The SSAEPs were assessed at 500 and 2000 Hz, and the audiometry was performed in open field through observation of behavioral responses to sound stimuli, at the same frequencies.

Rehabilitation with cochlear implant in patient with harboyan syndrome.

Background Harboyan syndrome, defined as congenital corneal dystrophy associated with progressive sensorineural hearing loss, was first described by Harboyan in 1971. It is a hereditary disease manifested by eye lesions consistent with corneal endothelial dystrophy and progressive sensorineural hearing loss. There is bilateral symmetric progressive hearing loss, which may be either dominant or recessive.

Analysis of sound pressure levels emitted by children's toys.

Objective: To verify the levels of sound pressure emitted by non-certified children's toys.

Methods: Cross-sectional study of sound toys available at popular retail stores of the so-called informal sector. Electronic, mechanical, and musical toys were analyzed.

Language and focal brain lesion in childhood.

Childhood ischemic strokes can lead to problems like hemiplegias, epilepsies, cognitive changes (memory and mathematical solutions), and language ability (reading, writing, and aphasias). The purpose of this study was to evaluate language and its aspects in children with unilateral ischemic stroke and associate them with the age during the event, injured side, and occurrence of epilepsy. Thirty-two children between 8 months and 19 years of age were evaluated.

The impact of chronic suppurative otitis media on children's and teenagers' hearing.

Objective: Otitis media is the most common otological condition during childhood which compromises sound conduction in the middle ear. In chronic cases, it is estimated that the degree to which hearing is compromised is directly proportional to the damage caused to the middle ear's structures. It means that hearing thresholds may be influenced by factors such as the size and location of the tympanic perforation, the presence of ossicular chain erosion or disarticulation as well as the presence of cholesteatoma and its growth patterns.

Auditory brainstem response in premature and full-term children.

Objectives: To compare the absolute latencies of peaks I, III and V and interpeak intervals of premature and full-term children.

Methods: Prospective, comparative cohort study. Study subjects were premature and full-term children with auditory brainstem response (ABR) measured at ages 4, 12 and 20 months.

Auditory hypersensitivity in children and teenagers with autistic spectrum disorder.

Objective: To verify if the clinical behavior of auditory hypersensitivity, reported in interviews with parents/caregivers and therapists/teachers of 46 children and teenagers suffering from autistic spectrum disorder, correspond to audiological findings.

Method: The clinical diagnosis for auditory hypersensitivity was investigated by means of an interview. Subsequently, a test of the acoustic stapedial reflex was conducted, and responses to intense acoustic stimulus in open field were observed.

[Prevalence of hearing loss in very low birth weight neonates].

Objective: To evaluate the prevalence of hearing alterations in very low birth weight patients in the Neonatal Intensive Care Unit of the Hospital de Clínicas de Porto Alegre and to study the variables that can be related to alterations of the hearing acuity.

Methods: A transversal study was carried out. The study included all very low birth weight neonates admitted to the Neonatal Intensive Care Unit of the Hospital de Clínicas de Porto Alegre from September 1, 2000 to January 31, 2002.