An Initial Investigation of the Neural Correlates of Word Processing in Preschoolers With Specific Language Impairment.
Purpose: Previous behavioral studies have found deficits in lexical-semantic abilities in children with specific language impairment (SLI), including reduced depth and breadth of word knowledge. This study explored the neural correlates of early emerging familiar word processing in preschoolers with...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 61; no. 3; pp. 729 - 740 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Mar2018
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=128509590&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 128509590 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Mar2018 vid: 61 iid: 3 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 128509590 10.1044/2017_JSLHR-L-17-0249 ppf: 729 ppct: 11 formats: fmt: @attributes: type: P size: 892KB tig: atl: An Initial Investigation of the Neural Correlates of Word Processing in Preschoolers With Specific Language Impairment. aug: au: Haebig, Eileen Leonard, Laurence Usler, Evan Deevy, Patricia Weber, Christine affil: Purdue University, West Lafayette, Indiana Louisiana State University, Baton Rouge, Louisiana su: Vocabulary Preschool children Semantics Treatment of language disorders in children Lexical access sug: subj: Vocabulary Preschool children Semantics Treatment of language disorders in children Lexical access ab: Purpose: Previous behavioral studies have found deficits in lexical-semantic abilities in children with specific language impairment (SLI), including reduced depth and breadth of word knowledge. This study explored the neural correlates of early emerging familiar word processing in preschoolers with SLI and typical development. Method: Fifteen preschoolers with typical development and 15 preschoolers with SLI were presented with pictures followed after a brief delay by an auditory label that did or did not match. Event-related brain potentials were time locked to the onset of the auditory labels. Children provided verbal judgments of whether the label matched the picture. Results: There were no group differences in the accuracy of identifying when pictures and labels matched or mismatched. Event-related brain potential data revealed that mismatch trials elicited a robust N400 in both groups, with no group differences in mean amplitude or peak latency. However, the typically developing group demonstrated a more robust late positive component, elicited by mismatch trials. Conclusions: These initial findings indicate that lexical-semantic access of early acquired words, indexed by the N400, does not differ between preschoolers with SLI and typical development when highly familiar words are presented in isolation. However, the typically developing group demonstrated a more mature profile of postlexical reanalysis and integration, indexed by an emerging late positive component. The findings lay the necessary groundwork for better understanding processing of newly learned words in children with SLI. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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