Respiratory markers of conversational interaction.

Area of Science:

• Speech and Hearing Sciences
• Respiratory Physiology
• Social Interaction Dynamics

Background:

• Understanding the physiological underpinnings of human communication is crucial.
• Previous research has explored vocal and gestural synchrony in conversation.
• The role of respiratory patterns in conversational interaction remains less understood.

Purpose of the Study:

• To investigate respiratory kinematic changes during various speech and listening conditions.
• To quantify conversational synchrony using respiratory movement analysis.
• To identify specific respiratory measures sensitive to speech production and interaction.

Main Methods:

• Recorded respiratory movements from 20 participants in 10 dyads.
• Analyzed timing measures (inspiratory, expiratory, total cycle duration) during quiet breathing, reading, monologue, scripted dialog, and conversation.
• Employed cross-correlation analysis to assess respiratory synchrony between partners.

Main Results:

• Inspiratory duration proved most effective in differentiating quiet breathing from speech breathing.
• Respiratory kinematics shifted during listening to approximate speech patterns.
• Significant respiratory synchrony was observed between partners around speech turn-taking events.

Conclusions:

• Respiratory patterns dynamically adapt to conversational demands, including listening and anticipating speech.
• Conversational partners exhibit synchronized breathing, particularly during turn-taking.
• Respiratory synchrony may reflect underlying mechanisms of motor preparation and social coordination in dialogue.