EFFECT OF ACOUSTICAL, VISUAL AND TACTILE ECHO ON SPEECH FLUENCY OF STUTTERERS

The study presents the comparison of the effects of echo transmitted v ia single and combined channels (auditory, visual and tactile) on the speech of stutterers. The dependence of stuttering intensity and speec h velocity upon echo delay time was determined. For all transmission c hannels the stuttering intensities and the speech velocities decreased with the increase in the delay time of the echo. The results were ana lyzed statistically by means of the ANOVA method. It was proven that t he corrective effects of visual echo and tactile echo were comparable. Echo transmitted via the auditory channel was more effective than whe n transmitted via the visual or tactile channels. The greatest efficie ncy could be observed by transmitting echo via three connected channel s: auditory, visual and tactile. The results obtained show that in stu ttering therapy it is justified to use echo transmitted via three conn ected channels (auditory, visual, tactile).