Delayed auditory feedback induces slow oscillations in vocal fundamental frequency and intensity

2017 ◽  
Vol 142 (4) ◽  
pp. 2521-2521
Author(s):  
Jieun Lee ◽  
Francois-Xavier Brajot
Keyword(s):  
Fundamental Frequency ◽  
Auditory Feedback ◽  
Delayed Auditory Feedback ◽  
Slow Oscillations ◽  
Vocal Fundamental Frequency

scholarly journals The Effects of Delayed Auditory Feedback and Masking on the Fundamental Frequency of Stutterers and Nonstutterers

1979 ◽  
Vol 22 (2) ◽  
pp. 343-353 ◽  
Author(s):  
Barbara Knauss Lechner
Keyword(s):  
Fundamental Frequency ◽  
Adult Male ◽  
Oral Reading ◽  
Auditory Feedback ◽  
Delayed Auditory Feedback ◽  
Fundamental Frequencies ◽  
Masking Condition ◽  
Two Measures

This investigation determined if fluency of the reader or type of auditory feedback changed characteristics of fundamental frequency or duration in oral reading by stutterers or nonstutterers. Mingographic tracings were made of sentences excerpted from tape recordings of paragraphs read by 15 adult male stutterers and 15 adult male nonstutterers in three conditions of feedback: normal auditory feedback (under earphones), delayed auditory feedback (0.14 sec delay), and masking (90 dB SPL). The data included 15 measures of fundamental frequency and two measures of duration. Stutterers read sentences in greater total time and with more downward inflections than nonstutterers. Comparison of the delayed auditory feedback (DAF) conditions with the normal auditory feedback (NAF) condition showed that the numbers of total, upward, and downward inflections and upward pitch shifts increased under DAF. In the DAF condition, average rates of upward and downward inflections decreased, and mean and median fundamental frequencies and total time increased. The only changes from the NAF to the masking condition were increases in mean and median fundamental frequencies.

Delayed Auditory Feedback with Different Delay Times at Each Ear

1964 ◽  
Vol 7 (4) ◽  
pp. 369-371
Author(s):  
Samuel Fillenbaum
Keyword(s):  
Delay Interval ◽  
Auditory Feedback ◽  
Normal Subjects ◽  
Delayed Auditory Feedback ◽  
Delay Times

Binaurally asynchronous delayed auditory feedback (DAF) was compared with synchronous DAF in 80 normal subjects. Asynchronous DAF (0.10 sec difference) did not yield results different from those obtained under synchronous DAF with a 0.20 sec delay interval, an interval characteristically resulting in maximum disruptions in speech.

The Establishment, Transfer, and Maintenance of Fluent Speech in 50 Stutterers Using Delayed Auditory Feedback and Operant Procedures

1974 ◽  
Vol 39 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Bruce P. Ryan ◽  
Barbara Van Kirk
Keyword(s):  
Detailed Analysis ◽  
Auditory Feedback ◽  
Rehabilitation Center ◽  
Delayed Auditory Feedback ◽  
Fluent Speech ◽  
Speech Fluency ◽  
The Past ◽  
Clinical Program

Operant speech fluency techniques are being used in a clinical program in a rehabilitation center to treat people who stutter. Establishment, transfer, and maintenance programs are used. Delayed auditory feedback is commonly employed to produce the initial fluent speech. From more than 200 clients seen over the past four years, 50 recent clients were selected for a detailed analysis. The results indicate that the programs are effective in helping people of varying ages and stuttering severity to speak fluently. This was accomplished in relatively short periods (approximately 20 hours of therapy). The fluent speech of the clients has transferred to their environment and checks indicate that it has been maintained.

Effects of Five Experimental Treatments on Stuttering

1979 ◽  
Vol 22 (1) ◽  
pp. 132-146 ◽  
Author(s):  
Richard Martin ◽  
Samuel K. Haroldson
Keyword(s):  
Auditory Feedback ◽  
Change Score ◽  
Treatment Change ◽  
Noise Condition ◽  
Experimental Conditions ◽  
Delayed Auditory Feedback ◽  
Change Scores ◽  
Time Out ◽  
Experimental Treatments

Twenty adult stutterers were exposed to each of five experimental treatments: time-out, noise, delayed auditory feedback (DAF), “wrong” and metronome. In each session a subject spoke for 20 minutes without treatment (baserate) followed by 30 minutes in one of the five experimental conditions. Before the five treatment sessions, subjects accomplished three pre-experimental tasks: expectancy, changeability, and adaptation tasks. Percent stuttering decreased significantly in all conditions, and stuttering duration reduced significantly in all but the noise condition. The amount of reduction in percent stuttering from baserate to treatment (change score) in time-out was positively related to the change scores in DAF and metronome. Change scores in metronome were positively related to change scores in time-out and “wrong.” Percent stuttering change scores in noise, DAF, and “wrong” were essentially unrelated. Stuttering duration change scores were related only for the time-out and DAF, and metronome and DAF conditions. In general, the pre-experimental expectancy, changeability, and adaptation scores were unrelated to change scores in any of the experimental conditions. Words spoken per minute did not change significantly from baserate to treatment for any experimental condition except time-out.

Sign in / Sign up

Export Citation Format

Share Document