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University of Nebraska - Lincoln

2009

Electromagnetic articulography

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Full-Text Articles in Education

Kinematic Analysis Of Articulatory Coupling In Acquired Apraxia Of Speech Post-Stroke, Carly J. Bartle-Meyer, Justine V. Goozée, Bruce E. Murdoch, Jordan R. Green Feb 2009

Kinematic Analysis Of Articulatory Coupling In Acquired Apraxia Of Speech Post-Stroke, Carly J. Bartle-Meyer, Justine V. Goozée, Bruce E. Murdoch, Jordan R. Green

Department of Special Education and Communication Disorders: Faculty Publications

Primary objective: Electromagnetic articulography was employed to investigate the strength of articulatory coupling and hence the degree of functional movement independence between individual articulators in apraxia of speech (AOS). Methods and procedures: Tongue-tip, tongue-back and jaw movement was recorded from five speakers with AOS and a concomitant aphasia (M = 53.6 years; SD = 12.60) during /ta, sa, la, ka/ syllable repetitions, spoken at typical and fastrates of speech. Covariance values were calculated for each articulatory pair to gauge the strength of articulatory coupling. The results obtained for each of the participants with AOS were individually compared to those obtained …


Accuracy Assessment For Ag500, Electromagnetic Articulograph, Yana Yunusova, Jordan R. Green, Antje Mefferd Jan 2009

Accuracy Assessment For Ag500, Electromagnetic Articulograph, Yana Yunusova, Jordan R. Green, Antje Mefferd

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: The goal of this article was to evaluate the accuracy and reliability of the AG500 (Carstens Medizinelectronik, Lenglern, Germany), an electromagnetic device developed recently to register articulatory movements in three dimensions. This technology seems to have unprecedented capabilities to provide rich information about time-varying positions of articulators. However, strengths and weaknesses of the system need to be better understood before the device is used for speech research.
Method: Evaluations of the sensor positions over time were obtained during (a) movements of the calibration device, (b) manual movements of sensors in a cartridge within the recording field of the cube, …