SynchroDexterity: Rapid Non-Dominant Hand Skill Acquisition with Synchronized Guidance in Mixed Reality

Acquiring fine motor skills for the non-dominant hand is challenging yet crucial, particularly when the dominant hand is injured. While traditional mirror therapy has proven effective, it often requires extended practice and can impose significant cognitive demands. This paper presents a novel augmented reality system that leverages inverted visual feedback from the dominant hand’s real-time movements, coupled with a synchronized instructional video, to facilitate efficient training for the non-dominant hand. Experimental results demonstrate that this approach significantly enhances non-dominant hand skills in a short period while maintaining a low cognitive load.