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  Tongue position variability during sustained notes in healthy vs dystonic horn players using real-time MRI.

Iltis, P. W., Frahm, J., Altenmüller, E., Voit, D., Joseph, A., & Kozakowski, K. (2019). Tongue position variability during sustained notes in healthy vs dystonic horn players using real-time MRI. Medical Problems of Performing Artists, 34(1), 33-38. doi:10.21091/mppa.2019.1007.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-1852-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-1853-5
Genre: Journal Article

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Iltis, P. W., Author
Frahm, J.1, Author              
Altenmüller, E., Author
Voit, D.1, Author              
Joseph, A.1, Author              
Kozakowski, K., Author
Affiliations:
1Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society, ou_578634              

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 Abstract: Embouchure dystonia (EmD) is a variant of focal task-specific dystonia in musicians characterized by the loss of control in facial and oral muscles while controlling airflow into the mouthpiece of a wind or brass instrument. We compared tongue position variability (TPV) during sustained notes between healthy, elite horn players and horn players affected by EmD. METHODS: Real-time MRI films at 33.3 ms resolution were obtained from 8 healthy elite and 5 EmD horn players as they performed on a non-ferromagnetic horn at each of three different dynamic levels: pianissimo, mezzo forte, and fortissimo. Nine profile lines (3 from anterior, 3 from middle, and 3 from posterior oral cavity regions) were overlaid on each image using a customized MATLAB toolkit, and the variability of the dorsal tongue edge position was examined at each dynamic from temporal intensity profiles produced by MATLAB. RESULTS: Despite trends for more pronounced TPV (larger standard deviations) in the elite musicians (p=0.062), 2-way repeated measures ANOVA revealed no significant differences between groups. However, dynamic level significantly influenced TPV for all subjects, combined (p=0.048) and different regions of the oral cavity showed differing TPV (p<0.001). When only the most active region (anterior oral cavity) was included in the model, differences between groups reached statistical significance (elite > EmD, p<0.048), particularly at the fortissimo dynamic. We postulate that these differences may be due, in part, to a greater degree of generalized orofacial muscle tension in the EmD subjects that includes the tongue.

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Language(s): eng - English
 Dates: 2019-03
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.21091/mppa.2019.1007
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Title: Medical Problems of Performing Artists
Source Genre: Journal
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Pages: - Volume / Issue: 34 (1) Sequence Number: - Start / End Page: 33 - 38 Identifier: -