Abstract
Attention deficit hyperactivity disorder (ADHD) patients show, as one of the main symptoms, an attentional impairment. Selective attention in the hearing process is the ability to understand speech in a noisy environment, which can be evaluated by several methods. One of the main approaches is the functioning of the Medial Olivocochlear Efferent System, which can be accessed by Transient-Evoked Otoacoustic Emissions (TOAE). ObjectiveThis study aimed at evaluating the suppression effect of contralateral noise on TOAE in ADHD (study group) and normal subjects (control group). Study Design: Case-control study. Material and MethodsA study with 20 children distributed in two, age- and gender-matched groups. Results: No differences were found in TOAE responses between the two groups, with and without noise. ConclusionsWe conclude that there were no functional differences in the Medial Olivocochlear Efferent System in the two groups analyzed.
Highlights
The Attention Deficit/Hyperactivity Disorder (ADHD) is described by the American Psychiatric Association - APA1 as “a persistent pattern of attention deficit and/or hyperactivity, more frequent than what is usually seen in the equivalent level of development”
We conclude that there were no functional differences in the Medial Olivocochlear Efferent System in the two groups analyzed
We tried to see whether there was any difference in transient evoked otoacoustic emissions (TEOAE) responses without and with noise between the children of the control and those of the study
Summary
The Attention Deficit/Hyperactivity Disorder (ADHD) is described by the American Psychiatric Association - APA1 as “a persistent pattern of attention deficit and/or hyperactivity, more frequent than what is usually seen in the equivalent level of development”. According to the APA, attention deficit and hyperactivity/impulsiveness symptoms manifest in different degrees and, in order to be classified as ADHD, they must manifest before 7 years of age; besides impacting in social development and functioning, academic and occupational lives of individuals, the losses must be present in at least two contexts such as, for example, at home and at school. Still, according to the APA, the ADHD is more frequent in males and its prevalence is estimated to be between 3% and 5% in school aged-children. Children with ADHD have attention deficit as one of their main symptoms. As far as hearing is concerned, selective attention is the ability to understand speech in noisy environments, and it can be assessed in different ways – one of them is the workings of the Medial Olivocochlear System Efferent
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