The nonlinear gestural model of speech apraxia: clinical implications and applications

The nonlinear gestural model of speech apraxia: clinical implications and applications
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言语失用症的非线性手势模型:临床意义和应用

DOI:
10.1080/02687038.2020.1727839
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发表时间:
2020
期刊:
影响因子:
2
通讯作者:
Aichert
Aichert
中科院分区:
医学3区
文献类型:
--
作者:
Ziegler;Lehner;Aichert

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基本原理:在这里提出的方法,成人言语失用症(AoS)被理解为一种障碍,影响语言特定的运动模式的发言者在儿童和青少年时期获得。影响发音准确性的语音因素,在AoS反映了相对脆弱性,其伴随的运动规划变量的apraphilic损伤,这取决于他们在言语运动学习的程度已被巩固。由于这些因素相互作用很强,非线性手势(NLG)模型将它们组合成一个综合的计算框架。因此,我们的目的是解释在AOS从一个词的结构特性跨多个层次的准确性,-从发音手势到韵律patterns.The NLG模型:在早期的文章回顾,NLG模型首先介绍了描述其设计的五个核心原则,因此计算和经验的模型基础进行了解释。最后,模型的形状划定指定其经验得出的系数,重点是临床implications.Clinical应用:一个基于网络的NLG计算器描述,允许临床医生计算NLG分数为德语单词或pseudowords和创建显示他们的手势分数,作为一个先决条件,将NLG的方法在他们的诊断和治疗工作。此外,我们描述了如何的结构特性的话,代表他们的NLG分数,可以链接到其他临床相关的词汇变量。这些工具的潜在应用包括:(i)根据发音困难的层次结构设计评估和治疗材料;(ii)根据NLG层次结构解释错误模式,将其作为异常病理机制的签名,可能具有鉴别诊断应用;以及(iii)计算距离度量,以描述目标词与AoS患者实现之间的关系。扩展到其他类型的语音障碍的成人和儿童进行了讨论。
Rationale: In the approach presented here, adult apraxia of speech (AoS) is understood as a disorder affecting the language-specific motor patterns a speaker acquires during childhood and adolescence. The phonological factors that influence articulatory accuracy in AoS reflect the relative vulnerability of their accompanying motor planning variables to apraxic impairment, depending on the extent to which they have been consolidated in speech motor learning. Since these factors interact strongly, the Nonlinear Gestural (NLG) model combines them into an integrative computational framework. We thereby aim at explaining word production accuracy in AOS from a word’s structural properties across multiple hierarchical layers, – from articulatory gestures to metrical patterns.The NLG model: In a review of earlier articles, the NLG-model is first introduced by describing five core principles underlying its design, whereupon the computational and empirical underpinnings of the model are explained. Finally, the model shape is delineated by specifying its empirically derived coefficients, with a focus on clinical implications.Clinical applications: A web-based NLG calculator is described that allows clinicians to compute NLG scores for German words or pseudowords and create displays of their gestural scores, as a prerequisite of incorporating the NLG approach in their diagnostic and therapeutic work. Furthermore, we describe how the structural properties of words, as represented by their NLG scores, can be linked to other clinically relevant lexical variables. Potential applications of these tools involve (i) the design of assessment and treatment materials following a hierarchy of articulatory difficulty, (ii) the interpretation of error patterns following the NLG hierarchy as a signature of the apraxic pathomechanism, with possible differential diagnostic applications, and (iii) computation of a distance metric to describe the relationship between target words and their realisations by patients with AoS. Expansions to other types of speech sound impairment in adults and children are discussed.
获得性言语失用症加失语症中重复多音节词产生的片段和韵律变异性
DOI: --
发表时间: 2018
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发表时间: 2010
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语音计划的架构建模:言语失用症的证据
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发表时间: 2009
期刊:
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通过镜像神经元系统对语言的动作:声道手势动作单元在理解音系进化中的作用
DOI: --
发表时间: 2006
期刊:
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作者:
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