Abstract
Recent reports suggest the value of examining various aspects of speech production from a nonlinear ‘‘dynamic systems’’ point of view [e.g., Kelso and Tuller, J. Physiol. 246, R928–R935 (1984)]. Such an approach searches for behaviors that reflect generic properties of self-organizing, dynamic systems, such as phase transitions, order or control parameters, and fractal dimensions [e.g., R. J. Baken, ASHA Fall 1990 and J. Voice (in press); M. T. Turvey, Am. Psychol. 45, 938–953 (1990)]. The attempt to examine fundamental frequency declination and intrautterance resets over phrase and sentence length utterances using this approach will be reported. Using reiterant syllable utterances, effects of task variations, such as speaking rate, intonation, and depth of initial inspiration, are examined in the context of what changes in behavior reveal about the coupling of component systems and possible ‘‘order parameters.’’ [Work supported by the Dept. of Psychol. and Chancellor’s Fellowship.]
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