A theoretical investigation of reference frames for the planning of speech movements
A theoretical investigation of reference frames for the planning of speech movements
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DOI：
10.1037/0033-295x.105.4.611-633
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发表时间：
1998-10-01
影响因子：
5.4
通讯作者：
Johnson, D
中科院分区：
文献类型：
--
作者：
Guenther, FH;Hampson, M;Johnson, D
语音运动控制系统在产生元音和半元音时是否使用不变的声道形状目标？一个四部分的理论处理有利于模型的唯一不变目标是听觉感知空间的区域，而不是假设不变收缩目标的模型。听觉靶区作为听觉系统神经图谱形成的一种紧急属性，在发育过程中被假设出现。此外，言语运动在听觉感知空间中被规划为轨迹。然后通过神经映射将这些轨迹映射到关节运动中，从而在需要时允许收缩位置和程度的运动等效变异性。这些假设是用语音获取和产生的DIVA模型的计算机模拟来说明的。最后，对基于这种理论处理的收缩理论的支持者提出了几个困难的挑战。
Does the speech motor control system use invariant vocal tract shape targets when producing vowels and semivowels? A 4-part theoretical treatment favoring models whose only invariant targets are regions in auditory perceptual space over models that posit invariant constriction targets is presented. Auditory target regions are hypothesized to arise during development as an emergent property of neural map formation in the auditory system. Furthermore, speech movements are planned as trajectories in auditory perceptual space. These trajectories are then mapped into articulator movements through a neural mapping that allows motor equivalent variability in constriction locations and degrees when needed. These hypotheses are illustrated using computer simulations of the DIVA model of speech acquisition and production. Finally, several difficult challenges to proponents of constriction theories based on this theoretical treatment are posed.