SPEECH PRODUCTION IN PARKINSONS DISEASE

该项目的目的是评估发音特征， 帕金森氏病从声音信号推断。 加速 PD中的说话速率与振幅的降低相结合 （运动功能减退）和速度（运动迟缓）的发音运动 暗示手势重叠增加和/或手势减少 与以习惯速率产生的话语相比， 健康的演讲者 PD中的语速减慢可能与 尽管有证据表明解耦， 的空间和时间的发音关系的Pd表明， 手势幅度可以不受说话速率影响 健康的演讲者 这个项目使用手势滑动的原则， 手势幅度来解释所推断的发音缺陷 从声学信号F2的轨迹将被用作声学信号F1。 表示元音手势; F2起始频率将用作 手势重叠的索引。 这些问题与 了解该人群中的言语运动控制障碍 并且可以结合到治疗中。

The aim of this project is to evaluate articulatory characteristics in Parkinson's disease inferred from the acoustic signal. Accelerated speaking rate in PD coupled with reductions in amplitude (hypokinesia) and velocity (bradykinesia) of articulatory movements suggest increased overlap of gestures and or reductions in gesture magnitude in comparison to utterances produced at habitual rates by healthy speakers. Slowing speaking rate in PD may be associated with reductions in gesture overlap although evidence for decoupling of spatial and temporal articulatory relationships in Pd suggests that gesture magnitude may not be influenced by speaking rate as for healthy speakers. This project uses principles of gesture sliding and gesture magnitude to account for articulatory deficits as inferred from the acoustic signal F2 trajectories will be used as an acoustic representation of vowel gestures; F2 onset frequency will be used as an index of gesture overlap. There issues are relevant to the understanding of disordered speech motor control in this population and may be incorporated into a treatment.