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Permanent URI for this collectionhttps://eresearch.qmu.ac.uk/handle/20.500.12289/22
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Item Widening access to electropalatography for children with persistent sound system disorders.(American Speech-Language-Hearing Association, 1999-11) Gibbon, Fiona; Stewart, Fiona; Hardcastle, William J.Previous studies have demonstrated the value of using electropalatography (EPG) to assess, diagnose, and treat persistent sound system disorders in children. However, the application of EPG research has been limited in clinical contexts because most speech-language pathologists do not have access to the technique. This article provides an overview of recent EPG research on persistent sound system disorders and describes a network that has been established to widen access to EPG. The use of EPG via the network is illustrated in the case description of an 8-year-old boy, Robbie, who presented with a persisting speech disorder. The network was used because the clinician treating Robbie did not have an EPG. The main perceptual feature of Robbie's speech before EPG treatment was the deviant phonological process of backing /t/ and /d/ targets to velar place of articulation. EPG was used to assess articulatory patterns before treatment, to provide visual feedback as part of a treatment program, and to record changes in tongue-palate contact patterns as treatment progressed. Robbie achieved normal /t/ and /d/ articulatory patterns after treatment and was subsequently discharged. Factors that could have contributed to the successful outcome in this case are discussed, and areas requiring further research are identified.Item Articulatory characteristics of the occlusion phase of /t / compared to /t/ in adult speech(Taylor & Francis, 2007-03) Liker, Marko; Gibbon, Fiona; Wrench, Alan A.; Horga, DamirThis study used electropalatography (EPG) to investigate articulatory characteristics of /t / and /t/ occlusion in order to provide normative data to be used for the diagnosis and treatment of individuals with speech disorders. EPG data from the EUR-ACCOR database were analysed for nonsense VCV sequences containing /t / and /t/ in nine vowel contexts for seven English speaking adults. The main results of this study are that all speakers had a significantly more posterior placement for /t / compared to /t/ and that placement was stable during the occlusion phase of both /t / and /t/. For most speakers, the occlusion phase was longer for /t / compared to /t/, the occlusion phase generally involved more EPG contact and was slightly more variable in /t / compared to /t/, but these differences were not statistically significant for all speakers. The implications of the results for diagnosing and treating speech disorders are discussed.Item The national CLEFTNET project for individuals with speech disorders associated with cleft palate.(Taylor & Francis, 2007-03) Lee, Alice; Gibbon, Fiona; Crampin, Lisa; Yuen, Ivan; McLennen, GrantAlthough previous studies have demonstrated the benefits of using electropalatography (EPG) for treating therapy-resistant articulation errors associated with cleft palate, until recently access to this form of treatment has been limited. For the past 10 years, however, the CLEFTNET Scotland project has provided individuals with cleft palate access to EPG therapy. CLEFTNET Scotland represented a novel form of EPG service delivery-it linked the cleft palate centres throughout Scotland to Queen Margaret University College (QMUC) in Edinburgh through an electronic network. EPG data collected in the centres were sent to QMUC, where experts conducted detailed analysis leading to a precise diagnosis of each individual's specific articulation difficulty and suggested therapy guidelines to the specialist speech-language therapists based on their analysis. This form of service delivery has recently extended to include England, Wales and Northern Ireland to form CLEFTNET UK. This paper describes the CLEFTNET projects, discusses orthodontic issues relevant to EPG therapy for individuals with cleft palate, and presents a case study to illustrate how therapy guidelines for speech-language therapists are derived from data analysis.