Delusionized? Potential Harms of Proprioceptive Manipulations through Hand Redirection in Virtual Reality

Proprioceptive ManipulationResults users underestimate the postion of their hand proprioceptive accuracy declines significantly no immediate recalibration to baseline occurs (invisible to users) HR offset 39 virtual bubble position real hand position HR offsetFigure 1: A participant performs an aimed-reaching interaction to hit a virtual bubble under the influence of gain-based hand redirection (HR).The technique virtually scales up her real-world movement, and as a result, she needs to cover less physical distance to reach the virtual target.Our study found that such visual-proprioceptive offsets induced by HR can lead to a significant decline in proprioceptive accuracy, which users cannot easily recover from.