Association between differentiated processing of syllables and comprehension of grammatical morphology in children with Down syndrome.
Our purpose in this exploratory investigation was to examine the relationship between degree of impairment in grammatical morpheme comprehension and event-related potential measures of differentiated processing of speech syllables in 10 children with Down syndrome. Results strongly support the hypothesized association. Graphs of the association indicate that children with less impaired grammatical comprehension had greater amplitude differences in event-related potentials to contrast of syllables within preselected poststimulus latency ranges. The theoretical and clinical ramifications of these results are discussed.
Yoder
Paul J
PJ
Vanderbilt University, Department of Special Education, Nashville, TN 37203, USA. paul.yoder@vanderbilt.edu
Camarata
Stephen
S
Camarata
Mary
M
Williams
Susan M
SM
D002540:Cerebral Cortex / Q000502:physiology; D002648:Child; D002663:Child Language; D002675:Child, Preschool; D032882:Comprehension; D004314:Down Syndrome / Q000175:diagnosis* / Q000523:psychology; D004569:Electroencephalography / Q000706:statistics & numerical data; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007361:Intelligence Tests; D007805:Language Development Disorders / Q000175:diagnosis / Q000523:psychology; D007806:Language Disorders / Q000175:diagnosis* / Q000523:psychology; D007807:Language Tests; D008297:Male; D025341:Principal Component Analysis; D011930:Reaction Time / Q000502:physiology; D013067:Speech Perception; D014705:Verbal Behavior / Q000502:physiology