Acoustic changes in the speech of children with cerebral palsy following an intensive program of dysarthria therapy.
Acoustic changes in the speech of children with cerebral palsy following an intensive program of dysarthria therapy.
复制标题
脑瘫儿童在强化构音障碍治疗后言语的声学变化。
DOI：
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发表时间：
2018
影响因子：
2.4
通讯作者：
N. Miller
中科院分区：
文献类型：
--
作者：
L. Pennington;E. Lombardo;N. Steen;N. Miller
背景
BACKGROUND
The speech intelligibility of children with dysarthria and cerebral palsy has been observed to increase following therapy focusing on respiration and phonation.
AIMS
To determine if speech intelligibility change following intervention is associated with change in acoustic measures of voice.
METHODS & PROCEDURES
We recorded 16 young people with cerebral palsy and dysarthria (nine girls; mean age 14 years, SD = 2; nine spastic type, two dyskinetic, four mixed; one Worster-Drought) producing speech in two conditions (single words, connected speech) twice before and twice after therapy focusing on respiration, phonation and rate. In both single-word and connected speech we measured vocal intensity (root mean square-RMS), period-to-period variability (Shimmer APQ, Jitter RAP and PPQ) and harmonics-to-noise ratio (HNR). In connected speech we also measured mean fundamental frequency, utterance duration in seconds and speech and articulation rate (syllables/s with and without pauses respectively). All acoustic measures were made using Praat. Intelligibility was calculated in previous research.
OUTCOMES & RESULTS
In single words statistically significant but very small reductions were observed in period-to-period variability following therapy: Shimmer APQ -0.15 (95% CI = -0.21 to -0.09); Jitter RAP -0.08 (95% CI = -0.14 to -0.01); Jitter PPQ -0.08 (95% CI = -0.15 to -0.01). No changes in period-to-period perturbation across phrases in connected speech were detected. However, changes in connected speech were observed in phrase length, rate and intensity. Following therapy, mean utterance duration increased by 1.11 s (95% CI = 0.37-1.86) when measured with pauses and by 1.13 s (95% CI = 0.40-1.85) when measured without pauses. Articulation rate increased by 0.07 syllables/s (95% CI = 0.02-0.13); speech rate increased by 0.06 syllables/s (95% CI = < 0.01-0.12); and intensity increased by 0.03 Pascals (95% CI = 0.02-0.04). There was a gradual reduction in mean fundamental frequency across all time points (-11.85 Hz, 95% CI = -19.84 to -3.86). Only increases in the intensity of single words (0.37 Pascals, 95% CI = 0.10-0.65) and reductions in fundamental frequency (-0.11 Hz, 95% CI = -0.21 to -0.02) in connected speech were associated with gains in intelligibility.
CONCLUSIONS & IMPLICATIONS
Mean reductions in impairment in vocal function following therapy observed were small and most are unlikely to be clinically significant. Changes in vocal control did not explain improved intelligibility.
影响因子：
2.2
作者：
Rahn, Douglas A., III;Chou, Maggie;Zhang, Yu
通讯作者：
Zhang, Yu
使用多个语音子系统方法预测脑瘫儿童的言语清晰度。
DOI：
10.1044/2014_jslhr-s-13-0292
发表时间：
2014
期刊：
Journal of speech, language, and hearing research : JSLHR
影响因子：
--
作者：
Lee,Jimin;Hustad,KatherineC;Weismer,Gary
通讯作者：
Weismer,Gary
脑瘫成人构音障碍：临床表现及其对沟通的影响
DOI：
10.1044/2015_jslhr-s-15-0086
发表时间：
2016
期刊：
Journal of speech, language, and hearing research : JSLHR
影响因子：
--
作者：
Schölderle;Staiger;Strecker;Ziegler
通讯作者：
Ziegler