The Least Increasing Aversion (LIA) Protocol: Illustration on Identifying Individual Susceptibility to Cybersickness Triggers

This 12-minute IEEE conference talk introduces the Least Increase Aversion (LIA) protocol designed to investigate factors triggering cybersickness in virtual reality environments. Learn how this innovative methodology, inspired by Subjective Matching techniques, incrementally constructs VR experiences while minimizing user discomfort. The presentation by researchers Nana Tian and Ronan Boulic from École Polytechnique Fédérate de Lausanne details their experimental validation focusing on individual susceptibility to three rotational axes (Yaw, Pitch, and Roll). Discover how the protocol effectively ranks cybersickness triggers from mildest to worst, revealing that individual susceptibility is more complex and multifaceted than previously understood. Part of the Cybersickness session at IEEE VR 2025, this talk offers valuable insights for VR researchers and developers working to create more comfortable virtual experiences.