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Journal of Neurology, Neurosurgery, and Psychiatry logoLink to Journal of Neurology, Neurosurgery, and Psychiatry
. 1993 Dec;56(12):1303–1311. doi: 10.1136/jnnp.56.12.1303

Spectral analyses of activity of laryngeal and orofacial muscles in stutterers.

A Smith 1, E Luschei 1, M Denny 1, J Wood 1, M Hirano 1, S Badylak 1
PMCID: PMC1015379  PMID: 8270932

Abstract

Previous studies have reported that the disfluent speech of stutterers is often associated with tremor in orofacial muscle systems. In the present report, spectral analyses of the amplitude envelopes of laryngeal and orofacial EMGs revealed that tremor-like oscillations of EMG activity, similar to those observed in orofacial muscles, are also present in laryngeal muscles during stuttered speech. Furthermore, tremor-like oscillations in orofacial and laryngeal muscles appear to be entrained in some subjects. It is speculated that autonomic systems may provide a mechanism whereby oscillations in different muscle groups may become entrained.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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