Physiological bases of acoustic LRT in nonstutterers, mild stutterers, and severe stutterers.

Physiological bases of acoustic LRT in nonstutterers, mild stutterers, and severe stutterers.
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声学 LRT 在非口吃者、轻度口吃者和重度口吃者中的生理基础。

DOI:
10.1044/jshr.3004.434
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发表时间:
1987
期刊:
Journal of speech and hearing research
影响因子:
--
通讯作者:
Alfonso,PJ
Alfonso,PJ
中科院分区:
--
文献类型:
--
作者:
Watson,BC;Alfonso,PJ

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简单的反应时间范式,结合了可变的前段,用于研究呼吸和喉部系统对轻度和重度口吃者延长的喉声反应时间(LRT)值的相对贡献。对发声前运动学数据进行了分析,包括启动频率、时间安排和为实现前段期间呼吸充气和前段后发声开始的功能性生理目标而执行的事件的组织。声学数据复制了先前观察到的复合口吃严重程度和口吃者声学 LRT 值的前期影响。运动学数据显示,一般来说,轻度口吃者表现出呼吸事件的延迟启动以及呼吸和喉部事件的适当组织,而重度口吃者则表现出喉部事件的延迟启动以及呼吸和喉部事件的不适当组织。也就是说,运动学数据既解释了声学 LRT 值作为前段函数的群体差异,也支持了以下观点:不同的呼吸和喉部缺陷是轻度和重度口吃者延长的声学 LRT 值的基础。
The simple reaction time paradigm, incorporating a variable foreperiod, was used to investigate relative contributions of the respiratory and laryngeal systems to mild and severe stutterers' prolonged acoustic laryngeal reaction time (LRT) values. Prephonatory kinematic data were analyzed in terms of frequency of initiation, timing, and organization of events executed to attain the functional physiological targets of respiratory inflation during foreperiods and phonation onset after foreperiods. Acoustic data replicated a previously observed composite stuttering severity and foreperiod effect on stutterers' acoustic LRT values. Kinematic data revealed that, in general, the mild stutterers demonstrated delayed initiation of respiratory events and appropriate organization of respiratory and laryngeal events while the severe stutterers demonstrated delayed initiation of laryngeal events and inappropriate organization of respiratory and laryngeal events. That is, kinematic data both account for group differences in acoustic LRT values as a function of foreperiod and support the notion that differential respiratory and laryngeal deficits underly mild and severe stutterers' prolonged acoustic LRT values.
口吃者的发声前胸壁姿势。
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影响因子: --
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影响因子: --
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