[Retracted Publication] Effect of speech rate manipulations on articulatory dynamics in severe traumatic brain injury: An EMA and EPG study

Murdoch, Bruce E., Kuruvilla, Mili S. and Goozee, Justine V. (2012) [Retracted Publication] Effect of speech rate manipulations on articulatory dynamics in severe traumatic brain injury: An EMA and EPG study. Brain Injury, 26 3: 241-260. doi:10.3109/02699052.2011.650664


NOTE: This article has been retracted.
Author Murdoch, Bruce E.
Kuruvilla, Mili S.
Goozee, Justine V.
Title [Retracted Publication] Effect of speech rate manipulations on articulatory dynamics in severe traumatic brain injury: An EMA and EPG study
Journal name Brain Injury   Check publisher's open access policy
ISSN 0269-9052
1362-301X
Publication date 2012-03
Sub-type Article (original research)
DOI 10.3109/02699052.2011.650664
Volume 26
Issue 3
Start page 241
End page 260
Total pages 20
Place of publication London, United Kingdom
Publisher Informa Healthcare
Collection year 2013
Language eng
Formatted abstract
Background:
Manipulation of speech rate forms an integral part of the treatment of dysarthria and the effects of changes in speech rate on articulatory dynamics in persons with traumatic brain injury (TBI) is poorly documented.

Objective:

To determine the effects of manipulations of speech rate (habitual vs fast) on lingual kinematics and tonguetopalate contacts in adult speakers with severe TBI and matched normal controls. Materials and methods: Six adults with severe TBI and five matched nonneurologically impaired controls underwent testing of their articulatory function using electromagnetic articulography (EMA) and electropalatography (EPG).

Results:

The results demonstrated that the TBI and control groups selected different strategies for increasing speech rate, with the TBI group showing an increase in articulatory effort estimated from an increase in maximum velocity and maximum acceleration/deceleration of tongue movement when speaking at the fast rate. The control group demonstrated no effects of a fast speech rate on articulatory kinematics for sentence productions.

Conclusions:

When speaking at a fast rate, individuals with severe TBI appear to use greater articulatory effort, possibly to preserve the distinctiveness of phonetic segments in order to avoid articulatory undershoot. In contrast, control subjects show a greater economy of effort when speaking at a fast rate, possibly to preserve articulatory precision.
Keyword Traumatic brain injury
Articulatory kinematics
Speech rate manipulations
Electromagnetic articulatography
Electropalatography
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Health and Rehabilitation Sciences Publications
 
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