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Intentions guide body spatial coding during actions. When visual and tactile effects conflict, the brain prioritizes task-relevant sensory information for action control and body representation.

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Area of Science:

  • Cognitive Neuroscience
  • Motor Control
  • Human-Computer Interaction

Background:

  • Spatial coding of the body is crucial for action control.
  • The role of intention in body representation during action is debated.
  • Multimodal sensory feedback influences body schema construction.

Purpose of the Study:

  • To investigate how intentions shape spatial body coding during actions with simultaneous, potentially conflicting, sensory effects.
  • To challenge the intentional-based account of action-effect coding.
  • To explore the interplay between visual, tactile, and proprioceptive feedback in action control.

Main Methods:

  • Utilized a Simon paradigm to assess spatial response coding.
  • Developed a setup with horizontally reversed visual hand effects versus tactile/proprioceptive effects.
  • Conducted three experiments manipulating the emphasis on visual versus tactile/proprioceptive effects.

Main Results:

  • A Simon effect, driven by tactile/proprioceptive location, was observed when these were emphasized (Experiments 1 & 3).
  • When visual effects were emphasized, the Simon effect was partially influenced by visual location (Experiment 2).
  • Findings suggest intention modulates the integration of sensory information for body representation.

Conclusions:

  • The agent's intention significantly influences how their body is represented during action.
  • This research bridges the understanding of action control and body representation.
  • Future research can further explore the link between action intention and body schema.