Different lip asymmetry in adults who stutter: Electromyographic evidence during speech and non-speech

Ai Leen Choo, Michael P. Robb, John C. Dalrymple-Alford, Maggie Lee Huckabee, Greg A. O'Beirne

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)143-147
Number of pages5
JournalFolia Phoniatrica et Logopaedica
Volume62
Issue number3
DOIs
StatePublished - Apr 2010

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing
  • LPN and LVN

Fingerprint Dive into the research topics of 'Different lip asymmetry in adults who stutter: Electromyographic evidence during speech and non-speech'. Together they form a unique fingerprint.

  • Cite this