palatography & EPG Flashcards
what is palatography used for
method to study tongue-palate contact during speech in articulatory phonetics
two types of palatography
static palatography and electropalatography (EPG)
static palatography
-powder/dye
-captures contact pattern after speech production
-tongue-palate contact
-useful for stop consonants and affricates
advantages of static palatography
simple, inexpensive, good for single articulatory events
limitations of static palatography
not dynamic (only one moment captured), messy and intrusive (and low-key kinda gross)
tongue contact of laminal dental [ t̪ ] vs laminal post-alveolar [ t̠ ] vs apical alveolar [ t ] in Western Arrernte
-broad contact along inside the surface of upper teeth and beyond
-broad contact behind upper teeth
-narrow contact just behind upper teeth
where does retroflexion typically have contact
between alveolar ridge and hard palate; not always curled tongue
electropalatography
-real-time method to track tongue CONTACT
-custom-made artificial palate with electrodes
-records contact patterns dynamically
setup of EPG (electropalatography)
-artificial palate molded to upper teeth/palate which contains electrodes arranged in a grid
-data sent to computer
applications of EPG
-speech therapy & clinical phonetics
-language documentation
-phonetic & phonological analysis
advantages of EPG
real-time dynamic analysis, repeatable & quantifiable; valuable for clinical and research settings
limitations of EPG
expensive (requires custom palate); only records contact, NOT PRESSURE
linguogram (?)
opposite of palatogram; paint the roof of mouth to see which part of tongue gets painted
