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Journal of Speech, Language, and Hearing Research Vol.42 1176-1194 October 1999.
© American Speech-Language-Hearing Association
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Voice and Speech Characteristics of Persons With Parkinson's Disease Pre- and Post-Pallidotomy Surgery

Preliminary Findings

Geralyn M. Schulz 1
Teri Peterson 1
Christine M. Sapienza 1
Melvin Greer 2

William Friedman 3
1 Department of Communication Sciences and Disorders University of Florida Gainesville
2 Department of Neurology Health Science Center University of Florida Gainesville
3 Department of Neurosurgery Health Science Center University of Florida Gainesville

schulz{at}csd.ufl.edu

Pallidotomy surgery, lesioning the globus pallidus internal, has been performed to alleviate Parkinsonian symptoms and drug-induced dyskinesias. Improvements in limb motor function have been reported in recent years following pallidotomy surgery. The purpose of this preliminary study was to determine the effect of pallidotomy surgery on select voice and speech characteristics of 6 patients with Parkinson's disease. Acoustic measures were analyzed pre-pallidotomy surgery and again at 3 months following surgery. Preliminary findings indicated that all participants demonstrated positive changes in at least one acoustic measure; 2 of the participants consistently demonstrated positive changes in phonatory and articulatory measures, whereas 3 participants did not consistently demonstrate positive changes postsurgery. The results are discussed relative to the differential effects observed across participants.

KEY WORDS: Parkinson's disease, surgical treatment, treatment outcome, acoustic analyses, voice and speech

Submitted on November 18, 1998
Accepted on April 20, 1999




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C. L. Ludlow, J. Hoit, R. Kent, L. O. Ramig, R. Shrivastav, E. Strand, K. Yorkston, and C. M. Sapienza
Translating Principles of Neural Plasticity Into Research on Speech Motor Control Recovery and Rehabilitation
J Speech Lang Hear Res, February 1, 2008; 51(1): S240 - S258.
[Abstract] [Full Text] [PDF]


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