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| Department of Theoretical and Applied Linguistics, School of English Language and Literature, Aristotle University of Thessaloniki. | ||
People
 Dr.
Katerina NicolaidisAnna
SfakianakiEleni
TsiartsioniVicky
PapachristouProf.
Eleftherios Panagopoulos
Research & Projects |
Electropalatography
The British EPG system marketed by Articulate instruments is used in current research at the Phonetics Laboratory. The major components of the system are the EPG unit, the interface unit, the multiplexer and the artificial palate. The artificial palate is a
custom-made acrylic plate with 62 sensors embedded on the surface to
detect lingual contact lingual contact with the palate in continuous
speech. The making of the artificial palate involves taking a plaster
impression of the upper teeth and palate for each subject, marking the
position of the sensors on the impression and then constructing the
acrylic plate and placing the sensors. The electrodes are distributed
in eight rows, which correspond to particular articulatory regions as
shown below.
The
Figure below shows some typical EPG contact patterns found during
consonant production in normal speech. In each palatal diagram
tongue-palate contact is indicated by the filled circles; empty circles
indicate absence of lingual contact with the palate. Electrodes at the
top of each palatogram correspond to anterior regions of the roof of
the mouth (e.g. alveolar); those at the bottom correspond to
posterior regions (e.g. velar), (see articulatory regions in the figure
above).
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