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  • Title: Lexical-semantic processes in children with specific language impairment.
    Author: Sabisch B, Hahne A, Glass E, von Suchodoletz W, Friederici AD.
    Journal: Neuroreport; 2006 Oct 02; 17(14):1511-4. PubMed ID: 16957599.
    Abstract:
    The current study used event-related brain potentials to investigate lexical-semantic processing of words in sentences spoken by children with specific language impairment and children with normal language development. Children heard correct sentences and sentences with a violation of the selectional restriction of the verb. Control children showed an N400 effect followed by a late positivity for the incorrect sentences. In contrast, children with specific language impairment showed no N400 effect but did show a late, broadly distributed positivity. This absence of the N400 effect is due to a relatively large negativity for correct sentences, suggesting weaker lexical-semantic representations of the verbs and their selectional restrictions in children with specific language impairment.
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