Natke U
Institut für Allgemeine Psychologie, Heinrich-Heine-Universität, Düsseldorf, Deutschland.
Folia Phoniatr Logop. 2000 Jul-Aug;52(4):151-9. doi: 10.1159/000021530.
In 12 stuttering subjects the fluency enhancing effect of delayed auditory feedback (DAF) and frequency-shifted auditory feedback (FAF) was compared. The subjects had to read three passages consisting of 300 syllables under simultaneous auditory feedback, DAF (delay time: 53 ms) and FAF (frequency shift: -(1/2) octave). Stuttering frequency and percentage of discontinuous speech time were determined. Only under DAF a fluency enhancing effect in the mean values was observed, but not under FAF. However, in 4 subjects a reduction in stuttering frequency of 50% occurred. The conclusion is drawn that the use of FAF as a prosthetic device is limited. The relationship between prolonged speech and fluency enhancing is discussed.
在12名口吃受试者中，比较了延迟听觉反馈（DAF）和移频听觉反馈（FAF）对口吃流畅性的增强效果。受试者必须在同时存在听觉反馈、DAF（延迟时间：53毫秒）和FAF（频率偏移：-（1/2）倍频程）的情况下阅读三篇由300个音节组成的文章。测定口吃频率和不连续言语时间的百分比。仅在DAF条件下观察到平均值上的流畅性增强效果，而在FAF条件下未观察到。然而，有4名受试者口吃频率降低了50%。得出的结论是，将FAF用作辅助装置的用途有限。讨论了延长言语与流畅性增强之间的关系。
