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Interpersonal synchronization depends on the sensory modality used for information exchange. Auditory coupling consistently leads to greater synchronization than visual coupling, regardless of kinematic information access.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Human-Computer Interaction

Background:

  • Interaction requires information exchange via sensory channels, enabling coordinated behavior.
  • Previous research indicated differing coordination dynamics between visual and auditory coupling in joint tasks.

Purpose of the Study:

  • To investigate whether sensory modality (visual vs. auditory) or kinematic information influences interpersonal coordination dynamics.
  • To test the 'modality-dependent hypothesis' against the 'kinematic hypothesis' in a joint finger-tapping task.

Main Methods:

  • Forty participants in 20 dyads performed a joint finger-tapping task.
  • Manipulated sensory coupling (visual/auditory) and kinematic information access (discrete/continuous).

Main Results:

  • Results supported the 'modality-dependent hypothesis', showing distinct attractor dynamics for visual and auditory coupling.
  • Auditory coupling consistently yielded higher synchronization levels than visual coupling.
  • Kinematic information continuity did not eliminate modality-specific differences.

Conclusions:

  • Sensory modality is a primary driver of interpersonal synchronization differences.
  • Findings highlight the role of sensorimotor interactions.
  • Suggests potential for sonification in motor training and rehabilitation.