Effects of Pure Tone Synchronous and Delayed Auditory Feedback on Keytapping Performance to a Programmed Visual Stimulus

1966 ◽  
Vol 9 (4) ◽  
pp. 596-603 ◽  
Author(s):  
Raymond S. Karlovich ◽  
James T. Graham
Keyword(s):  
Visual Stimulus ◽  
Auditory Feedback ◽  
Pure Tone ◽  
Visual Signal ◽  
Delayed Auditory Feedback ◽  
Delay Times ◽  
Auditory Signals ◽  
Female Subjects

Thirty-two female subjects tapped on a felt-padded key to a programmed repetitive flashing visual signal under various conditions of pure tone SAF and DAF. Two SLs of sound, 20 dB and 60 dB, and seven conditions of auditory feedback were employed (two SAF and five DAF conditions). Data were obtained concerning the relationships among tapping rates, delay times, and SLs of auditory signals.

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.

Perception of Auditory Feedback Delay: Subjective Estimate of Delay Magnitude

1968 ◽  
Vol 11 (4) ◽  
pp. 861-868 ◽  
Author(s):  
John H. Saxman ◽  
Theodore D. Hanley
Keyword(s):  
Delay Interval ◽  
Auditory Feedback ◽  
Delay Time ◽  
Feedback Delay ◽  
Delayed Auditory Feedback ◽  
Physical Time ◽  
Subjective Estimate ◽  
Speech Response ◽  
Female Subjects

Twenty female subjects were required to select, by the method of fractionation, the delay interval judged by them to be one-half the duration of the standard delay interval with which it was paired. The signals judged were the delay intervals between the subjects' own production of the syllable /da/ and its return via delayed auditory feedback. Ten ascending and ten descending one-half judgments were obtained for each subject at each of tie standard delay intervals of 100, 200, 400, and 800 msec. The curves for the ascending, descending, and combined ascending-descending judgments, when plotted against delay intervals in physical time, were all nearly linear with a slight positively accelerated slope. A tentative scale of subjective delay time is described and its implications for evaluating the speech response to DAF as a function of time are noted.

Visually and Auditorily Paced Keytapping Performance During Synchronous, Decreased, and Delayed Auditory and Visual Feedback

1967 ◽  
Vol 10 (4) ◽  
pp. 865-875 ◽  
Author(s):  
Raymond S. Karlovich ◽  
James T. Graham
Keyword(s):  
Visual Feedback ◽  
Auditory Feedback ◽  
Motor Performance ◽  
Sensory Feedback ◽  
Visual Stimuli ◽  
Delayed Auditory Feedback ◽  
The Moment ◽  
Delayed Visual Feedback ◽  
Female Subjects

Twenty female subjects tapped on a tapping key to programmed visual pacing stimuli under synchronous auditory feedback, delayed auditory feedback, and decreased sensory feedback conditions and also to programmed auditory pacing stimuli under synchronous visual feedback, delayed visual feedback, and decreased sensory feedback conditions. Cross-modality matching procedures were employed to equate the perceptual magnitudes of the auditory and visual stimuli. Pattern duration and tapping key displacement variables were evaluated and it was noted that the relative perceptual magnitudes between pacing and feedback stimuli are important aspects determining the degree of alteration in keytapping motor performance under delayed sensory feedback. The data also indicated that increases in the intensity of tapping observed under delayed sensory feedback conditions were not due to the temporal distortion of the feedback but possibly to an absence of feedback at the moment of tapping.

Some Factors That Influence Pure Tone Delayed Auditory Feedback

1963 ◽  
Vol 6 (3) ◽  
pp. 223-237 ◽  
Author(s):  
Howard B. Ruhm ◽  
William A. Cooper
Keyword(s):  
Auditory Feedback ◽  
Pure Tone ◽  
Stimulus Frequency ◽  
Physical Fatigue ◽  
Short Term ◽  
Delayed Auditory Feedback ◽  
Major Factors

Some of the major factors that might influence tapping changes induced by relatively short-term, pure tone delayed auditory feedback (DAF) were investigated. Stimulus frequency, subject, sex, sophistication, practice, physical fatigue, adaption to the task, and habituation to the task were considered. Only sophistication and habituation influenced performance significantly. The introduction of pure tone DAF within 5 dB SL, produced observable changes in tapping, thereby providing a sensitive means of extrapolating pure tone thresholds in a relatively objective manner.

Effects of Sophistication on Four Tests for Nonorganic Hearing Loss

1977 ◽  
Vol 42 (4) ◽  
pp. 528-534 ◽  
Author(s):  
Deborah A. Monro ◽  
Frederick N. Martin
Keyword(s):  
Hearing Loss ◽  
Auditory Feedback ◽  
Pure Tone ◽  
Normal Hearing ◽  
Delayed Auditory Feedback ◽  
Pure Tone Average

Three groups of 15 normal-hearing subjects were asked to simulate a hearing loss in one ear. Each subject was then tested on four measurements often used in determining the presence of pseudohypacusis (a comparison of the SRT to the pure-tone average, ascending vs descending pure-tone tests, the Stenger test, and pure-tone delayed auditory feedback). Results showed that as practice and sophistication on each of the procedures increased, there tended to be more improvement in the subjects' ability to “beat” some of the tests than others.

Delayed Auditory Feedback and the Speech of Stuttering and Non-Stuttering Children

1978 ◽  
Vol 46 (2) ◽  
pp. 551-555 ◽  
Author(s):  
Beverly A. Timmons ◽  
James P. Boudreau
Keyword(s):  
Analysis Of Variance ◽  
Auditory Feedback ◽  
Feedback Condition ◽  
Speaking Rate ◽  
Delayed Auditory Feedback ◽  
Difference Scores ◽  
Delay Times ◽  
Speaking Task

25 male stutterers and 25 male non-stutterers matched by age and speaking task, read or recited under normal and 113-, 226-, 306-, 413-, 520-msec. delayed auditory feedback conditions. Changes in speaking rate and disfluency count from normal to each delayed auditory feedback condition were calculated as indicators of reaction to delayed auditory feedback. Using an analysis of variance of difference scores for speaking rate, no significant differences were found between stutterers and non-stutterers or among the delays. An analysis of variance of disfluency difference scores showed no differences between stutterers and non-stutterers. Significant differences in disfluency reaction among delay times were found.

Influence on Motor Performance of Simultaneous Delayed and Synchronous Pure-Tone Auditory Feedback

1964 ◽  
Vol 7 (2) ◽  
pp. 175-182 ◽  
Author(s):  
Howard B. Ruhm ◽  
William A. Cooper
Keyword(s):  
Auditory Feedback ◽  
Motor Performance ◽  
Pure Tone ◽  
Stimulus Presentation ◽  
Random Order ◽  
Presentation Order ◽  
Delayed Auditory Feedback ◽  
Intensity Ratios

A study was made of the effect of the presentation order of delay/synchronous (DAF/SAF) intensity ratios on tapping performance under simultaneously presented synchronous and delayed auditory feedback. Comparisons were made between performances of groups who received either primarily positive or primarily negative DAF/SAF ratios in random order. Additional comparisons were made between subjects who received serially presented DAF/SAF ratios in an ascending series and those who were given the same stimuli in a descending DAF/SAF ratio series. It was found that, when synchronous and delayed auditory feedback are presented simultaneously at various DAF/SAF ratios, the presentation order influences the degree of performance disruption. It is concluded that the results of studies involving the use of simultaneously presented SAF and DAF should be interpreted in light of the stimulus presentation order.

Differential Sensitivity to Auditory Feedback Delay Intervals: A Preliminary Study

1968 ◽  
Vol 11 (3) ◽  
pp. 595-599 ◽  
Author(s):  
John H. Saxman
Keyword(s):  
Delay Interval ◽  
Auditory Feedback ◽  
Speech Signal ◽  
Relative Sensitivity ◽  
Differential Sensitivity ◽  
Feedback Delay ◽  
Delayed Auditory Feedback ◽  
Interval Change ◽  
Delay Times ◽  
Preliminary Study

Differential sensitivity to delay interval change (jnd) was assessed for six subjects at 12 standard delay times ranging from 30 msec to 360 msec. The speaker’s self-generated speech signal (/da/) and its return via delayed auditory feedback constituted the interval boundaries. Mean absolute jnd’s varied in magnitude from 15.45 msec to 19.66 msec and were found to be independent of the standard delay times. The relative sensitivity (ΔD/D) to delay change decreased rapidly at the shorter delay times, then leveled off to a fairly gradual slope beginning at approximately 150 msec.

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