Jäncke, L., Kaiser, P., Bauer, A. & Kalveram, K.Th. (1995a) The effect of masked auditory feedback on jaw kinematics and duration and intensity of phonation. In C.W. Starkweather & H.F.M. Peters (Hrsg.), Proceedings of the First World Congress on Fluency Disorders. 27-30.
Abstract
For the purpose of studying the effect of auditory masking on speech kinematics, we applied unpredictable white noise with an intensity of 100 dB(SPL) in 20% of all speech trials while Ss spoke the testword /papapas/ under different speech rates (fast, moderate, and slow). We found no differences between stutterers and nonstutterers with respect to the effects of auditory masking. Both stutterers and nonstutterers demonstrated strong prolongations of jaw movement durations (due to a lengthening of the plateau phase and not due to a lengthening of the durations of opening and closing gestures.), as well as Prolongation of duration of phonation and enhancement of intensity of phonation under auditory masking condition. It is hypothesized that auditory masking might serve as therapeutic intervention, since it causes speech rate reduction, reducing complexity of speech motor control. In addition it is argued that switching off the audtitory channel might free the stutterer from using suditory feedback for speech control.

Back