[Abstract Title]. - Society for Neuroscience

five deviants are presented in an alternating fashion with the standards. Also data from a control
oddball condition was recorded.
Results: Children at risk for dyslexia had smaller MMN amplitudes than their controls for vowel,
vowel length and intensity changes, both in the right and left side of the head, and smaller
MMN-amplitudes for the consonant change in the right side of the head in the multi-feature
paradigm. This suggests that the children at risk for dyslexia had difficulties in pre-attentive
discrimination of various speech sound changes.
Conclusions: The children at risk for dyslexia seem to have problems in discriminating
consonant, vowel, vowel length and intensity changes in speech sounds. The present results are
encouraging by suggesting that the multi-feature MMN paradigm with changes in speech sounds
could be used for identifying sound-discrimination impairments already before the school age.
Disclosures: R.K. Lovio, PhD. student Grant from the Finnish Cultural Foundation, B.
Research Grant (principal investigator, collaborator or consultant and pending grants as well as
grants already received); The Academy of Finland (grant number 1211486), C. Other Research
Support (receipt of drugs, supplies, equipment or other in-kind support); P. Alku, Helsinki
University of Technology, Department of Signal Processing and Acoustics, A. Employment (full
or part-time); S. Pakarinen, Cognitive Brain Research Unit, Department of Psychology,
University of Helsinki, A. Employment (full or part-time); The Academy of Finland, B.
Research Grant (principal investigator, collaborator or consultant and pending grants as well as
grants already received); M. Huotilainen, Finnish Centre of Excellence in Interdisciplinary
Music Research, University of Jyväskylä, A. Employment (full or part-time); The Academy of
Finland, B. Research Grant (principal investigator, collaborator or consultant and pending grants
as well as grants already received); T. Kujala, Cognitive Brain Research Unit, Department of
Psychology, University of Helsinki, A. Employment (full or part-time); The Academy of
Finland, B. Research Grant (principal investigator, collaborator or consultant and pending grants
as well as grants already received); R. Näätänen, The Academy of Finland, B. Research Grant
(principal investigator, collaborator or consultant and pending grants as well as grants already
received).
Poster
249. Dyslexia, SLI, and Other Disorders of Cognition and Behavior
Time: Sunday, November 16, 2008, 1:00 pm - 5:00 pm
Program#/Poster#: 249.23/V8
Topic: F.01.d. Language
Support: NICHD Grant HD29891