Impaired Phonological and Orthographic Word Representations Among Adult Dyslexic Readers: Evidence From Event-Related Potentials.
The authors examined the processing of phonological and orthographic word representations among 17 dyslexic and 16 normal college-level readers using Event-Related Potential measures. They focused on 2 early components-the P200 and the P300. The results revealed P200 and P300 components of lower amp...
| Published in: | Journal of Genetic Psychology Vol. 166; no. 2; pp. 215 - 239 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Published: |
Taylor & Francis Ltd
June 2005
|
| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=510509027&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 510509027 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00221325 GNP jtl: Journal of Genetic Psychology issn: 00221325 maglogo: N pubinfo: dt: June 2005 vid: 166 iid: 2 pid: 58221 pub: Taylor & Francis Ltd artinfo: ui: 510509027 10.3200/GNTP.166.2.215-240 ppf: 215 ppct: 24 formats: fmt: – @attributes: type: T – @attributes: type: P size: 1.2MB tig: atl: Impaired Phonological and Orthographic Word Representations Among Adult Dyslexic Readers: Evidence From Event-Related Potentials. aug: au: Meyler, Ann Breznitz, Zvia su: Electroencephalography Word recognition Dyslexia Phonology sug: subj: Electroencephalography Word recognition Dyslexia Phonology ab: The authors examined the processing of phonological and orthographic word representations among 17 dyslexic and 16 normal college-level readers using Event-Related Potential measures. They focused on 2 early components-the P200 and the P300. The results revealed P200 and P300 components of lower amplitude and later latency among dyslexic readers than among normal readers for both types of word representation. Group differences were greatest for phonological representations. In addition, the authors observed greater time gaps among dyslexic readers than among normal readers between different processing stages (i.e., between P2 and P3 peaks, between P3 and reaction time). Combined, the data suggest a consistent speed-of-processing deficit among dyslexic readers that is evident within and between stages of cognitive processing. The results are discussed in the context of deficits in stimulus encoding and working memory. In addition, the authors discuss the need for accurate timing and synchronization of phonological and orthographic codes for efficient word recognition. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|