Peripheral and central auditory findings in children with communication disorders
Child Language; Speech; Hearing; Reflex, Acoustic; Electrophysiology.
Introduction: Communication disorders include impairments in language, speech and communication. Knowing the close relationship between hearing and language and speech development, hearing tests can be used in an attempt to assist in the early identification and therapeutic process of children with these disorders. Objective: To investigate the acoustic stapedial reflex (ASR) responses in children with developmental language disorder (DLD) or phonological disorder (PD), as well as to verify the characteristics of the cortical auditory evoked potential (CAEP) in childhood apraxia of speech (CAS). Method: Dissertation structured in two manuscripts: (1) cross-sectional study in which the sample was composed of subjects with DLD, PD, with language complaints or without language complaints. The participants underwent a complete audiological evaluation and, subsequently, those responsible answered a questionnaire about the development of their respective children; (2) case report of a male child, with a previous diagnosis of CAS and referred for audiological diagnosis. Complete audiological evaluation and CAEP with speech stimulus were performed. Results: The highest number of absent or increased ASR was found in children with DLD or PD compared to subjects without language complaints. In addition, asymmetry was observed between the ears in the latency values of the CAEP in a clinical case with CAS. Conclusion: Changes in the ASR proved to be prevalent in children with language disorders and, together with the CAEP, they can be objective indicators for the early identification of communication disorders.