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Combining Phase Advancement and Period Correction Explains Rushing during Joint Rhythmic Activities
Thomas Wolf1, Cordula Vesper2,3, Natalie Sebanz4
1Department of Cognitive Science, Central European University, Október 6 utca 7, 1051, Budapest, Hungary. WolfT@ceu.edu.
Scientific Reports
|June 29, 2019
Summary
When people perform rhythmic actions together, they unconsciously speed up, a phenomenon called joint rushing. This study found joint rushing is more pronounced when actions are perceptually similar, suggesting a phase advance mechanism.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Motor Control
Background:
- Rhythmic joint actions, like clapping or music-making, often lead to unconscious tempo increases, known as joint rushing.
- The underlying mechanisms of joint rushing in humans remain largely unexplored despite extensive research on rhythmic performance.
Purpose of the Study:
- To investigate the mechanisms responsible for joint rushing in humans.
- To determine if perceptual similarities between individuals' actions influence the joint rushing effect.
- To differentiate joint rushing from social facilitation and action mirroring.
Main Methods:
- Three experiments utilized a joint synchronization-continuation drumming task.
- Participants performed rhythmic actions in groups of varying sizes.
- Perceptual similarity of action effects between individuals was manipulated.
Main Results:
- Joint rushing was consistently observed across different group sizes, indicating it is a robust phenomenon.
- The joint rushing effect was significantly stronger when individuals' actions were perceptually similar.
- Control conditions excluded social facilitation and action mirroring as explanations for the observed rushing.
Conclusions:
- Joint rushing appears to be driven by a phase advance mechanism, potentially augmented by a human-specific period correction mechanism.
- Perceptual coupling between individuals' actions plays a crucial role in modulating the joint rushing effect.
- The findings provide novel insights into the coordination and synchronization of rhythmic behavior in groups.
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