An examination of intra-articulator relative timing

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Abstract
The relative timing of consonant and vowel related movements of the tongue dorsum across variations in stress patterns was examined in two subjects using a computerized pulsed ultrasound system. The patterns observed were similar to those reported by Tuller et al. [J. Exp. Psychol. H.P.P. 8, 460-472 (1982)] for interarticulator timing. Correlations between the duration of a "period," defined as the interval between the onsets of movements associated with adjacent vowels, and the "latency," defined as the interval between the beginning of the period and the point in the period at which movement associated with the intervocalic consonant begins, were positive and reliable. The source of this correlation pattern was examined and found not to be due to a scaling of an invariant phase relation but rather due to a main effect for stress on the vowel-to-vowel articulatory period combined with an artifactual part-whole correlation within each stress level.

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