Hargrave S, Kalinowski J, Stuart A, Armson J, Jones K
School of Human Communication Disorders, Dalhousie University, Halifax, Canada.
J Speech Hear Res. 1994 Dec;37(6):1313-9. doi: 10.1044/jshr.3706.1313.
The purpose of this study was to determine the effect of the magnitude and direction of the frequency shift of frequency-altered auditory feedback (FAF) on stuttering frequency at both normal and fast speech rates. Twelve adult male and 2 adult female subjects who stutter read 10 different passages at either a normal or fast speech rate under nonaltered auditory feedback (NAF) and each of four FAF conditions in which the feedback signal was shifted: up one-half octave; up one octave; down one-half octave; and down one octave. Mean stuttering frequency for NAF was significantly higher than mean stuttering frequencies for all FAF conditions (p < 0.05). There were no statistically significant differences between the FAF conditions (p > 0.05). Subjects exhibited significantly more disfluencies under the fast speech rate condition relative to the normal speech rate condition. Future research should examine the relationship between frequency shifts of less than one-half octave and stuttering amelioration.
本研究的目的是确定频率改变听觉反馈（FAF）的频移幅度和方向对正常语速和快速语速下口吃频率的影响。12名成年男性和2名成年女性口吃者在未改变听觉反馈（NAF）以及反馈信号发生偏移的四种FAF条件下（上移半个八度；上移一个八度；下移半个八度；下移一个八度），以正常或快速语速朗读10篇不同的文章。NAF的平均口吃频率显著高于所有FAF条件下的平均口吃频率（p < 0.05）。FAF条件之间无统计学显著差异（p > 0.05）。与正常语速条件相比，受试者在快速语速条件下表现出明显更多的言语不流畅。未来的研究应探讨小于半个八度的频移与口吃改善之间的关系。
