Adaptation of respiratory patterns in collaborative reading
Résumé
Speech and variation of respiratory chest circumferences of eight French dyads were monitored while reading texts with increasing constraints on mutual synchrony. In line with previous research, we find that speakers mutually adapt their respiratory patterns. However a significant alignment is observed only when speakers need to perform together, i.e. when reading in alternation or synchronously. From quiet breathing to listening, to speech reading, we didn't find the gradual asymmetric shaping of respiratory cycles generally assumed in literature (e.g. from symmetric inhalation and exhalation phases towards short inhalation and long exhalation). In contrast, the control of breathing seems to switch abruptly between two systems: vital vs. speech production. We also find that the syllabic and the respiratory cycles are strongly phased at speech onsets. This phenomenon is in agreement with the quantal nature of speech rhythm beyond the utterance, previously observed via pause durations.
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