Corey McMillan
Department of Neurology
Wednesday, September 17
3:00-4:30pm
Articulation-based
constraints for a cognitive model of speech production
Traditionally, psychologists and linguists have assumed that
phonological speech errors result from the substitution of well-formed
segments. However, growing evidence from acoustic and articulatory
analyses of these errors suggests that activation from competing
phonological representations can cascade to articulation (e.g,
Goldrick & Blumstein, 2006). This talk
presents a cascading model and
investigates the consequences for psycholinguistic models of speech
production. Two major questions are addressed: whether such a
cascading model should include feedback between levels of planning;
and whether abstract phonological representations are still required
if articulation is not well-formed. Experimental work using
electropalatography, ultrasound, and voice onset time
will be
presented which supports a cascading model of speech production that
requires feedback between levels of representation and includes
phonemic representations even when articulation is malformed.