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Published on: May 8, 2021
Action co-representation is tuned to other humans
Chia-Chin Tsai1, Wen-Jui Kuo, Daisy L Hung
1The Institute of Neuroscience, National Yang Ming University, 155 Linong Street Sec. 2, Peitou, Taipei, Taiwan.
Journal of Cognitive Neuroscience
|April 18, 2008
Summary
Believing you are interacting with a human, not a computer, significantly influences action planning and anticipation in joint actions. This suggests our motor system defaults to co-representing human actions.
Area of Science:
- Cognitive Neuroscience
- Social Psychology
- Motor Control
Background:
- The action observation and execution network, or common coding system, underlies the representation of observed actions.
- Understanding how we represent another's intentional behavior in joint actions is crucial for social interaction.
Purpose of the Study:
- To investigate the role of the common coding system in representing knowledge of another's intentional behavior during joint actions.
- To determine if the perceived intentionality of a partner influences action planning and anticipation.
Main Methods:
- Participants (n=18) performed the social Simon task, believing they interacted with either a human or a computer.
- Behavioral data and neurophysiological measures (P3, Slow Cortical Potential - Slow Wave Response Latency, S-LRP) were collected.
Main Results:
- Evidence of an agency-dependent social Simon effect was observed, modulating action planning and anticipation.
- Neurophysiological data (P3 and S-LRP) supported the behavioral findings, indicating belief in human intentionality was sufficient to elicit the effect.
Conclusions:
- The perceived intentionality of another agent is sufficient to modulate action planning and anticipation in joint actions.
- Co-representation of human action appears to be a biologically tuned default of the human motor system, facilitating social interaction.
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