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Body ownership, the sense of one's own body parts, influences motor control. When a virtual body felt like one's own, visual feedback of movement errors strongly impacted performance.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human-Computer Interaction

Background:

  • The sense of body ownership is crucial for self-awareness but its role in action execution is debated.
  • Understanding how body ownership influences motor control is key to understanding action cognition.

Purpose of the Study:

  • To investigate the influence of body ownership on motor performance.
  • To examine if body ownership modulates the sense of voluntariness during actions.

Main Methods:

  • Utilized immersive virtual reality (VR) to present virtual bodies from first-person and third-person perspectives.
  • Participants performed drawing tasks (lines or ellipses) while observing a virtual arm executing either the same or a different movement.
  • Measured motor performance and subjective reports of body ownership and voluntariness.

Main Results:

  • Motor performance was significantly "attracted" to the visually perceived movement over the intended movement when body ownership was high (first-person perspective).
  • A mismatch between intended and observed movements led to greater interference when the virtual body was perceived as one's own.
  • Provided direct behavioral evidence that body ownership modulates the impact of visual movement feedback on motor execution.

Conclusions:

  • The feeling of body ownership plays a significant role in modulating sensorimotor control.
  • Visual feedback of actions is more influential on motor performance when the body performing the action is perceived as one's own.
  • This research highlights the intricate relationship between body perception and action execution in virtual environments.