14th International Congress of Phonetic Sciences (ICPhS-14)

San Francisco, CA, USA
August 1-7, 1999


Development and Advantages of a New Electromagnetic Articulography Instrument for the Investigation of the Orofacial Structures

Hansjörg Horn (1), Thomas Scholl (1), Rüdiger Berndt (2), Ingo Hertrich (2), Hermann Ackermann (2), Gernot Goez (1)

(1) Department of Orthodontics; (2) Neurological Clinic;
University of Tübingen, Germany

The electromagnetic articulography offers the possibility to examine lip and tongue movements. In a laboratory test measurement accuracy of a new system and of the AG 100 was investigated in the median sagittal plane and 10 respectively 20 mm next to it. In a circle with a diameter of 80 mm and with a torsion angle of 0 degree the new system showed a mean measuring error of 0.12 mm in comparison to 0.26 mm for the AG 100. In a zone of 80-120 mm outside of the measuring center and 20 mm next to the median sagittal plane our new system showed only a mean error of 0.92 mm whereas the value of the AG 100 increased to 3.31 mm. No information concerning the rotation angle is given by the AG 100 whereas this could be assessed by the new system.

Full Paper

Bibliographic reference.  Horn, Hansjörg / Scholl, Thomas / Berndt, Rüdiger / Hertrich, Ingo / Ackermann, Hermann / Goez, Gernot (1999): "Development and advantages of a new electromagnetic articulography instrument for the investigation of the orofacial structures", In ICPhS-14, 1353-1356.