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Conference Paper: Awareness of form-sound correspondence in Chinese children with dyslexia: Preliminary results from event-related potentials and time frequency analyses

TitleAwareness of form-sound correspondence in Chinese children with dyslexia: Preliminary results from event-related potentials and time frequency analyses
Authors
Keywordstime frequency analysis
phonological regularity
phonological consistency
event-related potentials
Chinese developmental dyslexia
Chinese character recognition
awareness of form-sound mapping
Issue Date2011
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1001754
Citation
The 4th International Conference on BioMedical Engineering and Informatics (BMEI 2011), Shanghai, China, 15-17 October 2011. In Proceedings of the 4th BMEI, 2011, p. 661-666 How to Cite?
AbstractDevelopmental dyslexia has usually been characterized as having difficulties learning grapheme-phoneme correspondence and applying the mappings. This study investigates form-sound awareness in Chinese reading-impaired children in terms of regularity, consistency and lexicality effects using event-related potentials (ERP) and time-frequency analysis (TFA). Preliminary data from two Cantonese-speaking male children, one with reading impairment (PR) and one with normal reading performance (CA), performing a character recognition task were collected. ERP results indicated that CA showed a lexicality effect at N400 that was not evident in PR. TFA showed that CA exhibited greater event-related synchronization (ERS) and phase coherence at theta and gamma bands suggesting greater cognitive demand in processing pseudo and irregular characters. An opposite pattern was observed for PR, where greater effort was needed to retrieve information related to real and regular characters whilst failing to respond to pseudo and irregular characters. Greater ERS and phase coherence was also observed for real, pseudo and regular characters at 350-450ms at theta suggesting adequate access to phonological and semantic information for CA compared to PR. Whereas PR showed greater ERS and phase coherence at earlier and later time intervals. These initial findings suggest that PR may have weaker semantic representations and may be less sensitive to the internal structure of characters and its relationship with sounds. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158770
ISBN
References

 

DC FieldValueLanguage
dc.contributor.authorSu, IFen_HK
dc.contributor.authorLau, DKYen_HK
dc.contributor.authorYan, Nen_HK
dc.contributor.authorLaw, SPen_HK
dc.contributor.authorZhang, Zen_HK
dc.date.accessioned2012-08-08T09:01:15Z-
dc.date.available2012-08-08T09:01:15Z-
dc.date.issued2011en_HK
dc.identifier.citationThe 4th International Conference on BioMedical Engineering and Informatics (BMEI 2011), Shanghai, China, 15-17 October 2011. In Proceedings of the 4th BMEI, 2011, p. 661-666en_US
dc.identifier.isbn978-1-4244-9352-4-
dc.identifier.urihttp://hdl.handle.net/10722/158770-
dc.description.abstractDevelopmental dyslexia has usually been characterized as having difficulties learning grapheme-phoneme correspondence and applying the mappings. This study investigates form-sound awareness in Chinese reading-impaired children in terms of regularity, consistency and lexicality effects using event-related potentials (ERP) and time-frequency analysis (TFA). Preliminary data from two Cantonese-speaking male children, one with reading impairment (PR) and one with normal reading performance (CA), performing a character recognition task were collected. ERP results indicated that CA showed a lexicality effect at N400 that was not evident in PR. TFA showed that CA exhibited greater event-related synchronization (ERS) and phase coherence at theta and gamma bands suggesting greater cognitive demand in processing pseudo and irregular characters. An opposite pattern was observed for PR, where greater effort was needed to retrieve information related to real and regular characters whilst failing to respond to pseudo and irregular characters. Greater ERS and phase coherence was also observed for real, pseudo and regular characters at 350-450ms at theta suggesting adequate access to phonological and semantic information for CA compared to PR. Whereas PR showed greater ERS and phase coherence at earlier and later time intervals. These initial findings suggest that PR may have weaker semantic representations and may be less sensitive to the internal structure of characters and its relationship with sounds. © 2011 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1001754-
dc.relation.ispartofInternational Conference on BioMedical Engineering and Informatics Proceedingsen_HK
dc.rightsInternational Conference on BioMedical Engineering and Informatics Proceedings. Copyright © IEEE.-
dc.rights©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjecttime frequency analysisen_HK
dc.subjectphonological regularityen_HK
dc.subjectphonological consistencyen_HK
dc.subjectevent-related potentialsen_HK
dc.subjectChinese developmental dyslexiaen_HK
dc.subjectChinese character recognitionen_HK
dc.subjectawareness of form-sound mappingen_HK
dc.titleAwareness of form-sound correspondence in Chinese children with dyslexia: Preliminary results from event-related potentials and time frequency analysesen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailSu, IF: ifansu@hku.hken_HK
dc.identifier.emailLau, DKY: dustin@graduate.hku.hk-
dc.identifier.emailYan, N: nyan@hku.hk-
dc.identifier.emailLaw, SP: splaw@hkucc.hku.hk-
dc.identifier.emailZhang, Z: zgzhang@eee.hku.hk-
dc.identifier.authoritySu, IF=rp01650en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/BMEI.2011.6098430en_HK
dc.identifier.scopuseid_2-s2.0-84862958535en_HK
dc.identifier.hkuros188115-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84862958535&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage661en_HK
dc.identifier.epage666en_HK
dc.publisher.placeUnited States-
dc.identifier.scopusauthoridZhang, Z=55264954200en_HK
dc.identifier.scopusauthoridLaw, SP=7202242088en_HK
dc.identifier.scopusauthoridYan, N=55265366800en_HK
dc.identifier.scopusauthoridLau, DKY=55264743600en_HK
dc.identifier.scopusauthoridSu, IF=55265121600en_HK
dc.customcontrol.immutablesml 130326-

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