Relationship between Speech Evoked ALLR and Dichotic CV Scores in Children with Dyslexia

Abstract

Children with dyslexia may be associated with (central) auditory processing disorders. These processing disorders of an individual can be assessed either through behavioural tests and/or electrophysiological tests. Behavioural and electrophysiological tests are useful in uncovering the important aspects of neural basis of central auditory dysfunction in children with dyslexia. The present study evaluated the performance of children with dyslexia in comparison to typically developing children on speech evoked ALLR and Dichotic CV test. It was also aimed to see if any correlation. Exists between speech evoked ALLR and in Dichotic CV test in. children with dyslexia. A total number of 30 children in the age range of IO to 12 years were taken for the study. Out of 30 children, there were 15 typically developing children. And 15 children with dyslexia. The results revealed that overall for speech evoked ALLR, Latencies were significantly prolonged and amplitude was reduced in dyslexic children as compared to typically developing children. Similarly, Dichotic CV scores were also significantly reduced in dyslexic children. Further, it was observed that there were positive correlation between double corrected score and speech evoked ALLR but statistically non-significant. Hence, it is concluded that children with dyslexia performed poorly in dichotic Listening test. It is also concluded that there is abnormal encoding of speech signal at cortical Level in these children.