Do children with complex SSD process their self-produced auditory signal not as their own?

Abstract

Children with Speech Sound Disorder (SSD) have been found to show following ie, enhancing responses to formant perturbations. A possible mechanism is that the sensory motor system interprets the formant shifts as adjustments of the intended auditory outcome, following a strategy not aimed at neutralizing but at matching the perceived formant error. The present study explored this hypothesis through a modeling experiment with SimpleDIVA, with which certain model parameters were fitted to behavioral data from three groups of Dutch speakers: 6 children with SSD compared to 17 typically developing (TD) children and 50 healthy adults. Results showed a negative feedforward control/learning rate in the children with SSD while this parameter approximated 0 in adults and 1 in TD children. Findings suggest that children with SSD process the perturbed auditory signal as an external cue. Detailed results and discussion of experimental considerations/limitations will be available at the conference.

Type
Publication
In Twenty-First Biennial Conference on Motor Speech, Charleston, SC, USA. Poster
Frits van Brenk
Frits van Brenk
External consultant in the Motor Speech Disorders Laboratory

My research and teaching interests include motor speech disorders, clinical linguistics, experimental psycholinguistics, speech science, and research methods.