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undergraduate thesis: The neurobiology of developmental dyslexia in Chinese : an ERP study : investigating visual-orthographic processing using a repetition detection task
Title | The neurobiology of developmental dyslexia in Chinese : an ERP study : investigating visual-orthographic processing using a repetition detection task |
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Authors | |
Issue Date | 2018 |
Publisher | The University of Hong Kong (Pokfulam, Hong Kong) |
Citation | Kwok, H. C. [郭愷晴]. (2018). The neurobiology of developmental dyslexia in Chinese : an ERP study : investigating visual-orthographic processing using a repetition detection task. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. |
Abstract | Developmental dyslexia is a specific learning disorder which impaired the readers’
ability to decode written words and affects their reading and dictation. There was controversy
of the causes of dyslexia in Chinese. It has been suggested that Chinese reader with dyslexic
may have a deficit in visual-orthographic processing instead of phonological deficit in
alphabetic scripts.
Using event-related potential (ERP), the present study aimed to investigate the
difference in visual-orthographic processing of characters and objects between normal and
dyslexic Chinese readers as they passively viewed characters and line-drawings with different
well-formedness, including real, pseudo and non, in a repetition detection task. The first
differences emerged at P100 whereby a greater positivity was evoked for objects than
characters for readers with dyslexia only. At N170, a greater negativity was evoked for
characters than objects in both groups. Result revealed that normal readers develop sensitivity
to well-formedness of object, whereby real-objects elicited a greater negativity than nonobjects
at N170, but not in dyslexic readers. At N400, dyslexic readers showed a frontal shift
of sensitivity, whereby non-characters evoked a greater negativity than real-character, despite
the similar effort required in both groups.
|
Degree | Bachelor of Science in Speech and Hearing Sciences |
Subject | Dyslexia Dyslexic children |
Dept/Program | Speech and Hearing Sciences |
Persistent Identifier | http://hdl.handle.net/10722/287560 |
DC Field | Value | Language |
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dc.contributor.author | Kwok, Hoi Ching | - |
dc.contributor.author | 郭愷晴 | - |
dc.date.accessioned | 2020-10-01T07:56:27Z | - |
dc.date.available | 2020-10-01T07:56:27Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Kwok, H. C. [郭愷晴]. (2018). The neurobiology of developmental dyslexia in Chinese : an ERP study : investigating visual-orthographic processing using a repetition detection task. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. | - |
dc.identifier.uri | http://hdl.handle.net/10722/287560 | - |
dc.description.abstract | Developmental dyslexia is a specific learning disorder which impaired the readers’ ability to decode written words and affects their reading and dictation. There was controversy of the causes of dyslexia in Chinese. It has been suggested that Chinese reader with dyslexic may have a deficit in visual-orthographic processing instead of phonological deficit in alphabetic scripts. Using event-related potential (ERP), the present study aimed to investigate the difference in visual-orthographic processing of characters and objects between normal and dyslexic Chinese readers as they passively viewed characters and line-drawings with different well-formedness, including real, pseudo and non, in a repetition detection task. The first differences emerged at P100 whereby a greater positivity was evoked for objects than characters for readers with dyslexia only. At N170, a greater negativity was evoked for characters than objects in both groups. Result revealed that normal readers develop sensitivity to well-formedness of object, whereby real-objects elicited a greater negativity than nonobjects at N170, but not in dyslexic readers. At N400, dyslexic readers showed a frontal shift of sensitivity, whereby non-characters evoked a greater negativity than real-character, despite the similar effort required in both groups. | - |
dc.language | eng | - |
dc.publisher | The University of Hong Kong (Pokfulam, Hong Kong) | - |
dc.rights | The author retains all proprietary rights, (such as patent rights) and the right to use in future works. | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject.lcsh | Dyslexia | - |
dc.subject.lcsh | Dyslexic children | - |
dc.title | The neurobiology of developmental dyslexia in Chinese : an ERP study : investigating visual-orthographic processing using a repetition detection task | - |
dc.type | UG_Thesis | - |
dc.description.thesisname | Bachelor of Science in Speech and Hearing Sciences | - |
dc.description.thesislevel | Bachelor | - |
dc.description.thesisdiscipline | Speech and Hearing Sciences | - |
dc.description.nature | published_or_final_version | - |
dc.date.hkucongregation | 2018 | - |
dc.identifier.mmsid | 991044257871803414 | - |