Effects of concurrent motor, linguistic, or cognitive tasks on speech motor performance
Effects of concurrent motor, linguistic, or cognitive tasks on speech motor performance
复制标题
DOI：
10.1044/1092-4388(2003/096
复制
发表时间：
2003-10-01
影响因子：
2.6
通讯作者：
Benson, A
中科院分区：
文献类型：
--
作者：
Dromey, C;Benson, A
本研究考察了三种不同类型的并发任务对言语运动表现的影响。目的是揭示与次要任务性质相关的言语运动的潜在差异。20名年轻人在有或没有同时进行干扰活动的情况下重复句子。这些干扰包括运动任务（把垫圈、螺母和螺栓放在一起）、语言任务（从名词生成动词）和认知任务（进行心算）。在实验条件下收集的唇运动数据显示，在运动任务期间，位移和速度减少。语言和认知任务与增加的时空变异性以及上唇和下唇位移之间的负相关强度增加有关。这些研究结果表明，言语过程中的分心任务可以对几个唇部运动测量产生重大影响。这表明，分配给人类交流不同方面的神经资源的平衡可能会根据情境需求而发生变化。
This study examined the influence of 3 different types of concurrent tasks on speech motor performance. The goal was to uncover potential differences in speech movements relating to the nature of the secondary task. Twenty young adults repeated sentences either with or without simultaneous distractor activities. These distractions included a motor task (putting together washers, nuts, and bolts), a linguistic task (generating verbs from nouns), and a cognitive task (performing mental arithmetic). Lip movement data collected during the experimental conditions revealed decreases in displacement and velocity during the motor task. The linguistic and cognitive tasks were associated with increased spatiotemporal variability and increases in the strength of the negative correlations between upper and lower lip displacements. These findings show that distractor tasks during speech can have a significant influence on several labial kinematic measures. This suggests that the balance of neural resources allocated to different aspects of human communication may shift according to situational demands.