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Full-Text Articles in Speech and Hearing Science
Bilabial Substitution Patterns During Consonant Production In A Case Of Congenital Aglossia, Betty Mcmicken, Frederico Salles, Shelley Von Berg, Margaret Vento-Wilson, Kelly Rogers, Asterios Toutios, Shrikanth S. Narayanan
Bilabial Substitution Patterns During Consonant Production In A Case Of Congenital Aglossia, Betty Mcmicken, Frederico Salles, Shelley Von Berg, Margaret Vento-Wilson, Kelly Rogers, Asterios Toutios, Shrikanth S. Narayanan
Communication Sciences and Disorders Faculty Articles and Research
Purpose: Congenital aglossia is a rare syndrome in which an individual is born without a tongue. The present paper examines articulatory details of the production of multiple consonants by an aglossic speaker.
Method: Real-time magnetic resonance imaging data of the upper airway were collected from the aglossic speaker. Air-tissue boundaries were determined from the video sequences using a segmentation algorithm, and dynamics of vocal-tract constrictions and cross-dimensions were calculated.
Results: The aglossic speaker produced the consonants /t, d, th, l ,r, f ,v, s, sh/ with a bilabial closure instead of a normal lingua-alveolar closure; however, in …