Speech and oral motor learning in individuals with cerebellar atrophy.
Speech and oral motor learning in individuals with cerebellar atrophy.
复制标题
小脑萎缩患者的言语和口腔运动学习。
DOI：
10.1044/jslhr.4205.1157
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Ludlow,CL
中科院分区：
文献类型：
--
作者：
Schulz,GM;Dingwall,WO;Ludlow,CL
本研究的目的是确定小脑病理是否会干扰言语或新任务的运动学习。对比了小脑皮质萎缩（CCA）患者和对照组参与者在先前学习的真实语言、无意义语言和新的非语言口头运动任务上的练习效果。肢体运动学习的研究表明，与CCA组相比，对照组参与者的变异性减少，运动速度增加，运动幅度减少。在真实言语和无意义言语任务之间没有发现显著差异。在这两项言语任务中，尽管两组人都没有通过练习减少他们的动作变异性，但两组人都通过练习显著减少了下颌闭合位移和速度。对于新的非言语口头运动任务，两组在变异性、幅度或峰值速度方面都没有观察到任何变化。在言语或口腔运动任务中没有观察到小脑病理的影响。这些结果表明，通过言语任务的练习，两组先前学习的运动技能、运动速度和位移都有所下降。因此，无论小脑病理如何，练习的效果在先前学习过的言语任务和新的口头运动任务之间是不同的。
The purpose of this study was to determine whether cerebellar pathology interferes with motor learning for either speech or novel tasks. Practice effects were contrasted between persons with cerebellar cortical atrophy (CCA) and control participants on previously learned real speech, nonsense speech, and novel nonspeech oral-movement tasks. Studies of limb motor learning suggested that control participants would evidence reduced variability, increased speed of movement, and reduced movement amplitude with practice as compared with the CCA group. No significant differences were found between the real- and nonsense-speech tasks. For both speech tasks, although neither group reduced their movement variability with practice, both groups significantly reduced jaw closing displacement and velocity with practice. For the novel nonspeech oral-movement task, no change with practice was observed in either group in terms of variability, amplitude, or peak velocity. No effects of cerebellar pathology were seen in either the speech- or oral-movement tasks. These results demonstrated that with practice of speech tasks, a previously learned motor skill, movement speed and displacement decreased in both groups. Therefore, the effects of practice differed between previously learned speech tasks and the novel oral-movement task regardless of cerebellar pathology.