The role of phonology in visual word recognition: evidence from Chinese

Posters - Letter/Word Processing V: abstract no. 5024The hypothesis of bidirectional coupling of orthography and phonology predicts that phonology plays a role in visual word recognition, as observed in the effects of feedforward and feedback spelling to sound consistency on lexical decision. However, because orthography and phonology are closely related in alphabetic languages (homophones in alphabetic languages are usually orthographically similar), it is difficult to exclude an influence of orthography on phonological effects in visual word recognition. Chinese languages contain many written homophones that are orthographically dissimilar, allowing a test of the claim that phonological effects can be independent of orthographic similarity. We report a study of visual word recognition in Chinese based on a mega-analysis of lexical decision performance with 500 characters. The results from multiple regression analyses, after controlling for orthographic frequency, stroke number, and radical frequency, showed main effects of feedforward and feedback consistency, as well as interactions between these variables and phonological frequency and number of homophones. Implications of these results for resonance models of visual word recognition are discussed.postprin

Heparanase 1 and Heparanase 2 expression in Hippocampal Neurons

Poster presentation - Theme 5: NeuroscienceSelective modification (weakening or strengthening) of synaptic connections between neurons within the hippocampal circuit contribute to the learning and memory processes in the brain. Enzymatic heparanase-1 (hpa1) was found expressed in hippocampus by both immunohistochemistry and in-situ hybridization. Western blot analysis of neuronal secretions however revealed the pro-form, i.e. proheparanase, which do not have enzymatic activity is secreted by hippocampal neurons. Proheparanase could trigger AMPA receptor internalization upon binding to the ...postprin

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

Developmental 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.published_or_final_versio

Distinctive effects of regularity and consistency in orthography-phonology mapping in a logographic writing system: an ERP study

Poster Session E - Motor Control, Speech Production, Sensorimotor Integration: no. E23In alphabetic scripts, phonological regularity and consistency of print-to-sound mapping are not clearly separable. In contrast, these variables are operationally distinct in Chinese. About 80% of Chinese characters are phonograms, containing a semantic radical that provides a clue to the meaning of the character and a phonetic radical providing a clue to the pronunciation (e.g. 趾 zi2 ‘toe’ has a semantic radical 足meaning ‘foot’ and a phonetic radical 止 zi2). The orthographyphonology mapping in Chinese can be characterized in terms of regularity defined as the congruence between the pronunciation of a phonogram and that of its phonetic radical, and ...postprin

Nuclear and cell membrane surface area alteration in hexamethylene bisacetamide (HMBA) induced human colonic carcinoma cell line (LoVo)

Synopses of Paperspostprin

Learning to read a logographic writing system as a second language: an ERP study of L2 Chinese proficient readers

Poster Session E - Language Development, Plasticity, Multilingualism: no. E33For native readers of alphabetic scripts, learning to read a logographic system such as Chinese is challenging. This is not only because Chinese characters look drastically unlike from words in alphabetic scripts, but also because mappings between orthographic and phonological units in the two systems are different. In this study, we investigated two measures of orthography-phonology mapping-- phonological regularity and consistency--in relatively proficient late-acquired second language (L2) readers of Chinese in lexical decision (LD) and delayed naming (DN) tasks. Most Chinese characters are phonograms, which have a phonetic radical that carries phonological ...postprin

Processing sublexical phonology in L2 Chinese character reading: An ERP study

Poster Session 2: no. ps2p7Compared to alphabetic scripts, the distinct forms of Chinese characters as orthographic units and the fundamental difference in the mappings between orthographic, phonological, and semantic units lead to specific demands in L2 Chinese processing. The current study examined the sensitivity to and time course of two measures of orthography-phonology mapping-- phonological regularity and consistency-- for relatively proficient L2 readers of Chinese. Most Chinese characters are phonograms, which have a phonetic radical that carries phonological information. Regularity in these phonograms is defined by the congruence between the pronunciation of a phonogram and that of its phonetic radical. Consistency is the extent to which the pronunciation of the phonogram is shared by other …postprin

The dual-route account of writing-to-dictation in Chinese : a short report

202203 bckwAccepted ManuscriptSelf-fundedPublishe

Orthographic and phonological processing in Chinese character copying - a preliminary report

202012 bcrcVersion of RecordPublishe

Validation of constituent logographemes and radicals in Chinese characters using handwriting data

202203 bcfcAccepted ManuscriptOthersPolyU Startup fundingPublishe