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1
A kinematic investigation of anticipatory lingual movement in acquired apraxia of speech
Bartle-Meyer, Carly J.; Murdoch, Bruce E.. - : Psychology Press, 2010
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2
Semantic activation in Parkinson's disease patients on and off levodopa
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3
Influence of a standard electropalatography artificial palate upon articulation
McAuliffe, Megan J.; Lin, Emily; Robb, Michael P.. - : S. Karger AG, 2008
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4
Electropalatographic (EPG) assessment of tongue-to-palate contacts in dysarthric speakers following TBI
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5
Examining the effects of multiple sclerosis on speech production: Does phonetic structure matter?
Abstract: The second formant (F2) is well-known to be important to intelligibility (e.g. [Delattre, P., Liberman, A., & Cooper, F. (1955). Acoustic loci and transitional cues for consonants. Journal of the Acoustical Society of America, 27, 769–774]) and is affected by a variety of dysarthrias [Weismer, G., & Martin, R. (1992). Acoustic and perceptual approaches to the study of intelligibility. In R. Kent (Ed.), Intelligibility in speech disorders (pp. 67–118). Amsterdam: John Benjamins Publishing Company]. This study tests two related hypotheses: (1) dysarthria associated with Multiple Sclerosis (MS) has a greater effect on the ability to produce extreme F2 movement than on typical F2 movement and (2) phonetic stimuli associated with large and/or rapid F2 movement in healthy speakers precipitate larger differences between healthy and dysarthric speech than do stimuli associated with small and/or slow F2 movement. Twelve participants with MS and 16 healthy controls read aloud the Grandfather Passage. F2 slopes were calculated from the F2 tracings (i.e. change in Hz over a 20 ms lag). For each sentence, the following measures of F2 movement were calculated: F2 range (maximum F2–minimum F2), median slope, and 95%ile slope. The mean and the maximum observation for each participant were respectively used as measures of typical and extreme productions. A repeated-measures MANOVA detected significantly larger group differences in the slopes of maximum productions than for mean production. Also, group differences in F2 slope were greater in phonetic stimuli associated with the largest F2 slopes in healthy speech than in phonetic stimuli associated with more shallow slopes. No group differences in F2 range were detected. Results indicate dysarthria affects the production of extremely rapid changes in F2 and that some phonetic structures are more useful than others for detecting these impairments. It is concluded that comparison of speakers’ best-productions (e.g. maximum F2 slope) yield more useful estimates of the effects of mild to moderate dysarthria on F2 slopes than do typical productions.
Keyword: 110321 Rehabilitation and Therapy (excl. Physiotherapy); 920201 Allied Health Therapies (excl. Mental Health Services); C1; Dysarthria; Multiple sclerosis
URL: https://espace.library.uq.edu.au/view/UQ:160407
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6
An EMA analysis of the effect of increasing word length on consonant production in apraxia of speech: A case study
Bartle, Carly J.; Goozee, Justine V.; Murdoch, Bruce E.. - : Taylor & Francis, 2007
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7
The speed of lexical activation is altered in Parkinson's disease
Angwin, Anthony J.; Chenery, Helen J.; Copland, David A.. - : Taylor & Francis Inc, 2007
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8
Acoustic and perceptual analysis of speech adaptation to an artificial palate
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9
Self-paced reading and sentence comprehension in Parkinson's disease
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10
A nonspeech investigation of tongue function in Parkinson's disease
McAuliffe, Megan J.; Ward, Elizabeth C.; Murdoch, Bruce E.. - : OUP for the Gerontological Society of America, 2005
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11
Borrowing from models of motor control to translate cognitive processes: Evidence for hypokinetic-hyperkinetic linguistic homologues?
Whelan, Brooke-Mai; Murdoch, Bruce E.; Theodoros, Deborah G.. - : Pergamon-elsevier Science Ltd, 2005
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12
Language outcomes subsequent to treatment of brainstem tumour in childhood
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13
Summation of semantic priming and complex sentence comprehension in Parkinson's disease
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14
Beyond verbal fluency: Investigating the long-term effects of bilateral subthalamic (STN) deep brain stimulation (DBS) on language in two cases
Murdoch, Bruce E.; Theodoros, Deborah G.; Hall, Bruce. - : Routledge Taylor & Francis Ltd, 2005
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15
Introducing the pressure-sensing palatograph - the next frontier in electropalatography
Murdoch, Bruce E.; Goozee, Justine V.; Veidt, Martin. - : Taylor & Francis, 2004
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16
Effects of speaking rate on EMA-derived lingual kinematics: a preliminary investigation
Goozee, Justine V.; Lapointe, Leonard L.; Murdoch, Bruce E.. - : Taylor & Francis Ltd, 2003
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17
Hemispheric contributions to lexical ambiguity resolution: Evidence from individuals with complex language impairment following left-hemisphere lesions
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18
Semantic priming in Parkinson's disease: Evidence for delayed spreading activation
Arnott, Wendy L.; Chenery, Helen J.; Murdoch, Bruce E.. - : Psychology Press, 2001
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19
Subcortical brain mechanisms in speech and language
Murdoch, Bruce E.. - : Karger, 2001
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20
Discourse priming of homophones in individuals with dominant subcortical lesions, cortical lesions, and Parkinson’s disease
Copland, David A.; Chenery, Helen J.; Murdoch, Bruce E.. - : Psychology Press, 2001
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