Visuotactile integration modulates motor performance in a perceptual decision-making task

Area of Science:

• Neuroscience
• Cognitive Science
• Human-Computer Interaction

Background:

• Body ownership relies on multimodal integration, as seen in the Rubber Hand Illusion (RHI).
• Neural correlates of body ownership overlap with motor control structures like the parietal cortex, premotor cortex, Temporal Parietal Junction (TPJ), and insula.

Purpose of the Study:

• To investigate the functional significance of the structural overlap between body ownership and motor control.
• To determine if experimentally induced ownership of a virtual limb modulates sensorimotor task performance.

Main Methods:

• Utilized a virtual reality (VR) environment to manipulate body ownership.
• Employed three experimental conditions varying stimulus congruence to modulate ownership.
• Assessed the impact of induced ownership on performance in a simple sensorimotor task.

Main Results:

• The degree of virtual limb ownership directly modulated sensorimotor task performance.
• Demonstrated a significant link between the subjective experience of body ownership and objective motor control.

Conclusions:

• Body ownership is not merely a perceptual or subjective state.
• Body ownership is tightly coupled with decision-making and motor control systems.
• Findings highlight the functional integration of body ownership and motor control.