Disorders of verbal expression in parkinsonism
The present study shows that rigor is one of the main causative factors in the parkinsonian speech disorder, whereas tremor ordinarily can only play a minor role. The Fast Fourier Analysis of the frequency spectra demonstrated in parkinsonian speech frequency regions that are energy-deficient and al...
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Published in | Advances in neurology Vol. 40; p. 385 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
1984
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Subjects | |
Online Access | Get more information |
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Summary: | The present study shows that rigor is one of the main causative factors in the parkinsonian speech disorder, whereas tremor ordinarily can only play a minor role. The Fast Fourier Analysis of the frequency spectra demonstrated in parkinsonian speech frequency regions that are energy-deficient and also that the entire frequency spectrum is restricted to a range of 100 to 400 Hz, including the deficient regions, as against the 100- to 700-Hz range in the controls. These analytical findings seem to underline the important role played by the laryngeal and breathing dysfunctions in the parkinsonian voice and speech production. |
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ISSN: | 0091-3952 |