A preliminary study of the relationship between long latency response and learning disorder

The purpose of this preliminary investigation was to record long latency responses (LLR) from children with learning disabilities (LD) and to compare the findings with a normal group of children. LLRs were recorded from children with LD who had specific problems with language and were grouped as dyslexics. None of the children had Attention Deficit Disorder. Responses were recorded using clicks. N1 and P2 latency, N1-P2 amplitude and P2-P1 interpeak interval (IPI) were used as response parameters for analysis. IPI (P2-P1) was found to be significantly different between two test groups. None of the other measures differed significantly between the two groups.