Abstract
AbstractBackground: Hypersensitivity to loud sounds is commonly noticed in children with autism spectrum disorders. Objective and methods: This was a cross-sectional study that included 50 children, ages ranging from 1.5 to 3.33 years, divided into a study group of 25 autistic children with normal hearing and a control group of 25 normal hearing healthy children. The aim of this research was to the assess any abnormality in the loudness growth function objectively using auditory brainstem response (ABR), as well as to detect any ABR abnormalities in normal hearing autistic children with delayed language development. Results: Forty-four percent of normal hearing autistic children showed a lower threshold compared to healthy controls. They also showed significantly delayed wave III, but within-normal wave V, and consequently a longer inter-peak interval (IPI): I–III and shorter IPI: III–V, reflecting retro-cochlear dysfunction that may be related to their difficulty in communication. The mean slope of wave ...
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