Restricted Motility of the Speech Articulators in Cerebral Palsy

Hixon, Thomas J.; Hardy, James C.

doi:10.1044/jshd.2903.293

Cited by 41 publications

(28 citation statements)

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“…Inspection of the intcrcorrelation matrix (table III) demon strates the high interrelatedness these three speech rates (0.81. 0.70, and 0.84) have with each other, which is similar to that reported by Hixon and Hardy [ 1964] for the cerebral palsied children they studied. Whether such relationship would hold for an expanded grouping of CV syllables including conso nants less homogeneous in terms of feature components could be questionable.…”

Section: Discussionsupporting

confidence: 78%

“…This finding differs from that reported by Hixon and Hardy [1964], who found that, for cerebral palsied children, speech alternate motion rates were, in all cases, the better predictors of judged severi ty of dysarthria. A comparison with the study of Heilman and Peacher [1943] could not be made since correlations between various individual alternate motion rates used in that study and dysarthria were not reported.…”

Section: Discussioncontrasting

confidence: 57%

“…and lifting the tongue to the alveolar ridge. Both kinds of alternate motion rates have been found to predict speech perfor mance of dysarthric cerebral palsied speakers [Heilman and Poacher, 1943;Hixon and Hardy, 1964]. Hixon and Hardy [ 1964], how ever, found that repetitive speech activities predicted speech defectiveness better than nonspeech activities.…”

mentioning

confidence: 99%

“…Both kinds of alternate motion rates have been found to predict speech perfor mance of dysarthric cerebral palsied speakers [Heilman and Poacher, 1943;Hixon and Hardy, 1964]. Hixon and Hardy [ 1964], how ever, found that repetitive speech activities predicted speech defectiveness better than nonspeech activities. They accounted for this finding on the basis that the neural patterning for speech, as organized in the central ner vous system, is different from that of nonspeech activities.…”

mentioning

confidence: 99%

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Alternate Motion Rates of the Speech Articulators in Adults with Cerebral Palsy

Schliesser¹

1982

Folia Phoniatr Logop

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Section: Discussionsupporting

confidence: 78%

Section: Discussioncontrasting

confidence: 57%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Alternate Motion Rates of the Speech Articulators in Adults with Cerebral Palsy

Schliesser¹

1982

Folia Phoniatr Logop

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“…The task, which is often referred to by the terms syllable alternating motion rate (AMR), rapid repetitive articulation (RRA), or oral diadochokinesis (DDK), is included in standard assessment protocols for speech disorders (Robin, Solomon, Moon, & Folkins, 1997;Enderby, 1983;Hartelius, Svensson, & Bubach, 1993). The examination is considered speechlike since it is based on real syllables (Hixon & Hardy, 1964;Kent, 1997), and it is seen as a particularly sensitive index of motor speech impairments because it requires maximum performance (Kent, Kent, & Rosenbek, 1987). In normal children oral DDK rate is correlated with age and is viewed as an index of oral motor development (Henry, 1990;Williams & Stackhouse, 2000).…”

mentioning

confidence: 99%

Task-Related Factors in Oral Motor Control: Speech and Oral Diadochokinesis in Dysarthria and Apraxia of Speech

2002

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Detecting Bifurcations in Voice Signals

Herzel

Holzfuss

Kowalik

et al. 1998

Nonlinear Analysis of Physiological Data

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The lamina propria of the vocal folds is important in voice production. Understanding of the normal components of this layer and their distribution may further understanding of pathological processes. An evaluation of the distribution and ratio of fibroblasts and macrophages, the main cell types found in the lamina propria, and myofibroblasts, a repair cell, is reported. Twenty two normal human vocal folds were obtained from II male and 11 female patients. Using vimentin, CD68, and muscle specific actin stains, image analysis was used to determine the number and distribution of the three cell types in the lamina propria.Three distinct areas of different cellular activity, based on cell type and distribution are identified: The first area comprises the first twenty percent of the lamina propria, the second region is found in the middle sixty percent, and the last twenty percent of the lamina propria represents the third distinct area. We found that the number of fibroblasts is higher in superficial and deep layers of the lamina with a decrease in total cell number in the middle layer. The macrophages were found almost exclusively in the first twenty percent of the lamina and the distribution of myofibroblasts was greater in the first forty percent of the lamina. No significant gender difference was noted.These results indicate that most people (86% of our sample) with assumed normal vocal folds have reparative processes (based on the presence of myofibroblasts). In addition, some people (36% of our sample) have macrophage infiltration. The finding of three areas of different cellular activity may be useful in determining where the superficial, middle, and deep layers are located in the lamina propria and the location of associated pathological processes.

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Restricted Motility of the Speech Articulators in Cerebral Palsy

Cited by 41 publications

References 0 publications

Alternate Motion Rates of the Speech Articulators in Adults with Cerebral Palsy

Alternate Motion Rates of the Speech Articulators in Adults with Cerebral Palsy

Task-Related Factors in Oral Motor Control: Speech and Oral Diadochokinesis in Dysarthria and Apraxia of Speech

Detecting Bifurcations in Voice Signals

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