ABSTRACT
This study observed articulatory movements using real-time MRI in one speaker unaware of his speech clumsiness and two who experienced speech clumsiness. The speakers produced sentences and VCV sequences in an MRI scanner, and their articulatory movements in the mid-sagittal plane were recorded at 14 frames/second. The relative tongue size and the periodicity of the tongue motion were analyzed, and the results showed that participants who were aware of their speech clumsiness had larger tongues than standard adults and experienced disrupted periodicity of the tongue motion. This suggests a possible relationship between the disfluency of articulatory movements and the feelings of speech clumsiness.
