TY - JOUR
T1 - Different lip asymmetry in adults who stutter
T2 - Electromyographic evidence during speech and non-speech
AU - Choo, Ai Leen
AU - Robb, Michael P.
AU - Dalrymple-Alford, John C.
AU - Huckabee, Maggie Lee
AU - O'Beirne, Greg A.
PY - 2010/4
Y1 - 2010/4
N2 - The present study examined whether abnormal cerebral control was evident in the lip movements of adult stutterers (AS) compared to non-stutterers (ANS), as demonstrated during speech and non-speech tasks. Electromyographic (EMG) activity during production of words with initial /f/ and /p/ phonemes, single-sentence production and lip pursing were measured. Differences between AS and ANS were evident in all tasks. For AS, the highest EMG amplitude was in the region of the left lower lip, which is indicative of greater right hemisphere participation. However, in ANS the right lower lip displayed the highest EMG amplitude, suggesting greater left hemisphere participation. Further, AS showed greater asynchronous lip activity than ANS for all tasks. These results support the hypotheses of reversed lateralization for speech and non-speech processing and reduced coordination of speech musculature in AS.
AB - The present study examined whether abnormal cerebral control was evident in the lip movements of adult stutterers (AS) compared to non-stutterers (ANS), as demonstrated during speech and non-speech tasks. Electromyographic (EMG) activity during production of words with initial /f/ and /p/ phonemes, single-sentence production and lip pursing were measured. Differences between AS and ANS were evident in all tasks. For AS, the highest EMG amplitude was in the region of the left lower lip, which is indicative of greater right hemisphere participation. However, in ANS the right lower lip displayed the highest EMG amplitude, suggesting greater left hemisphere participation. Further, AS showed greater asynchronous lip activity than ANS for all tasks. These results support the hypotheses of reversed lateralization for speech and non-speech processing and reduced coordination of speech musculature in AS.
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U2 - 10.1159/000287213
DO - 10.1159/000287213
M3 - Article
C2 - 20424470
AN - SCOPUS:77951675517
SN - 1021-7762
VL - 62
SP - 143
EP - 147
JO - Folia Phoniatrica et Logopaedica
JF - Folia Phoniatrica et Logopaedica
IS - 3
ER -