DSpace Collection:http://hdl.handle.net/10722/386622024-03-28T11:41:54Z2024-03-28T11:41:54ZPolysyllable productions in Cantonese-speaking preschool childrenLai, Chung Him Jason黎頌謙http://hdl.handle.net/10722/3098262022-01-05T15:07:55Z2019-01-01T00:00:00ZTitle: Polysyllable productions in Cantonese-speaking preschool children
Authors: Lai, Chung Him Jason; 黎頌謙2019-01-01T00:00:00ZTimed picture naming norms for CantoneseChan, Yu Kei陳玗琪http://hdl.handle.net/10722/3098282022-01-05T15:07:55Z2019-01-01T00:00:00ZTitle: Timed picture naming norms for Cantonese
Authors: Chan, Yu Kei; 陳玗琪
Abstract: The present study is to provide Cantonese norms for age of acquisition (AoA),
familiarity, imageability, name agreement, visual complexity, and word frequency for 144
line drawings of objects and 86 of actions taken from Object and Action Naming Battery
(Druks & Masterson, 2000) for Cantonese-English speakers from Hong Kong. In the
preparatory study, ratings were obtained for Cantonese words from a group of 54 Cantonese-
English speakers. In the main experiment, naming latencies for the pictures were collected
with a timed picture naming experiment with a different group of 60 Cantonese-English
bilinguals in their native language (Cantonese). Linear Mixed Effects (LME) modelling was
used to analyse the naming data. Significant main effects were found for the variables: AoA,
familiairity, imageability, name agreement and visual complexity. No significant difference
was observed between object and action naming latencies. This study is among the first to
report normed picture naming data from bilinguals which make a majority of the world
population.2019-01-01T00:00:00ZThe use of image processing to quantitatively analyze oromotor movements : a feasibility study with nasopharyngeal cancer survivorsHo, Wing Yan Janice何穎忻http://hdl.handle.net/10722/3098272022-01-05T15:07:55Z2020-01-01T00:00:00ZTitle: The use of image processing to quantitatively analyze oromotor movements : a feasibility study with nasopharyngeal cancer survivors
Authors: Ho, Wing Yan Janice; 何穎忻
Abstract: Nonspeech oromotor movements are important to diagnosis and treatments of speech
disorders and dysphagia. Yet, there is a lack of objective measurement systems. Therefore, this
study proposed an image processing system to assess oromotor movements. Nasopharyngeal
cancer survivors, who often report restricted oromotor movements post-cancer treatments, and
healthy participants were recruited and grouped into impaired and normal speech intelligibility
groups. Participants were video-recorded while they performed oromotor tasks including tongue
lateralization and elevation, lip protrusion and retraction, and jaw opening. With the Fiji
software, pixel-wise displacement of the targeted structures during movements was measured.
Group difference between speakers with impaired and normal intelligibility and correlations
between the oromotor and speech measures were established as precise speech performance
requires adequate range of oromotor movements.
This study found significant group differences between the two groups in four oromotor
measurements: lip retraction ratio (left and right), tongue elevation and jaw opening values; and
significant correlations across seven out of eight oromotor measures with speech measures. High
inter- and intra-rater reliability, diagnostic and convergent validity were established. The results
revealed the potential of this system. Yet, further investigations have to be done for validation
and revision of the method.2020-01-01T00:00:00ZThe feasibility of using ultrasonography imaging for documentation and analysis of tongue muscles and hyoid bone movements in nasopharyngeal cancer survivorsLau, Tiffany Yee Takhttp://hdl.handle.net/10722/3098242022-01-05T15:07:54Z2020-01-01T00:00:00ZTitle: The feasibility of using ultrasonography imaging for documentation and analysis of tongue muscles and hyoid bone movements in nasopharyngeal cancer survivors
Authors: Lau, Tiffany Yee Tak
Abstract: Ultrasonography measures, compared to current instrumental measures, has the
advantage of being non-invasive and radiation-free. However, there are no studies
investigating on them for impaired tongue and hyoid bone movements in nasopharyngeal
cancer (NPC) survivors. Hence, the feasibility of using ultrasonography imaging to
document and analyze tongue muscle movements and hyoid bone elevation as a potential
assessment tool for NPC survivors is examined in this study.
Twenty-three healthy and thirteen NPC participants were recruited. Ultrasonographic
measurements (speech and swallowing movement displacement measures, swallowing time
displacement) were conducted while participants performed a series of speech and
swallowing tasks. Participants also recorded spontaneous and structured speech samples, and
completed a MD Anderson dysphagia inventory questionnaire (MDADI). Changes in tongue
and hyoid bone movements during speech and swallowing were documented and analyzed
using a grid system, with high intra-rater reliability (78%). No significant group differences
were noted between healthy and NPC survivors (p>0.05). Weak correlations were observed
between ultrasonographic measures and speech and swallowing functions for both
populations. The results supported feasibility in using ultrasonography as an alternative tool
in visualizing and analyzing tongue and hyoid bone movements in the NPC survivors, though
further validation is required for clinical uses.2020-01-01T00:00:00Z