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Related Experiment Video

Updated: Jan 28, 2026

Corticospinal Excitability Modulation During Action Observation

Corticospinal Excitability Modulation During Action Observation

Published on: December 31, 2013

Reciprocal information flow and role distribution support joint action coordination.

Arianna Curioni¹, Cordula Vesper², Günther Knoblich¹

¹Department of Cognitive Science, Central European University, Budapest, Hungary.

|February 25, 2019

Summary

Coordinating actions with different spatial and temporal needs is challenging. This study found that mutual prediction or a leader-follower setup equally aids joint action, but imposed roles hinder coordination.

Keywords:

Coordination Internal models Joint action Role distribution

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Area of Science:

Cognitive Science
Neuroscience
Human-Computer Interaction

Background:

Joint actions often require temporal synchronization despite differing spatial trajectories.
Balancing temporal coordination and spatial alignment presents a significant challenge in collaborative tasks.

Purpose of the Study:

To investigate coordination mechanisms under conflicting spatial and temporal demands.
To compare the effectiveness of mutual prediction versus role distribution in joint action.

Main Methods:

Developed a novel coordination task with conflicting velocity profiles.
Conducted three experiments varying perceptual access and role assignment.
Analyzed coordination performance under different conditions.

Main Results:

Participants achieved effective coordination through mutual prediction without roles.
Leader-follower configurations also supported robust coordination.
Coordination suffered when roles were assigned but partners could see each other.

Conclusions:

Mutual prediction is crucial for coordinating actions with incongruent demands.
Velocity profile alignment is more prevalent than previously assumed.
Effective role distribution, based on perceptual access, matches mutual prediction effectiveness.