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May 2022

Reduction of stuttering frequency using frequency-shifted and delayed auditory feedback

Journal/Book: Folia Phoniatr Logopaed. 2000; 52: Allschwilerstrasse 10, CH-4009 Basel, Switzerland. Karger. 151-159.

Abstract: 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.

Note: Article Natke U, Univ Dusseldorf, Inst Allgemeine Psychol, Univ Str 1, D-40225 Dusseldorf, GERMANY

Keyword(s): stuttering; frequency-shifted auditory feedback; delayed auditory feed back; ALTERED FEEDBACK; SPEECH RATES; DURATION; ADULTS

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