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Abstract:
In this paper we present data on upper lip and lower lip
movement characteristics and their coordination for repaired
cleft upper lip (RCL) and control (CON) speakers. The data were
acquired using the AG100 EMMA system while the subjects produced
a selection of non-speech and speech tasks. In addition to
comparing group differences, we also made age group comparisons
within our population of RCL speakers. The results show that RCL
speakers showed a more variable spatio-temporal pattern for
individual upper lip movement cycles and a more variable interlip
coupling, in particular for motorically and linguistically more
demanding tasks. These differences were more pronounced for the
younger RCL speakers. The findings are discussed from a
non-linear coordinative dynamics perspective.
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