SABER: Spatial Attention, Brain, Extended Reality. - Tom Bullock; Emily Machniak; You-Jin Kim; Radha Kumaran; Justin Kasowski; Apurv Varshney; Julia Ram; Melissa M. Hernandez; Stina Johansson; Neil M. Dundon; Tobias Höllerer; Barry Giesbrecht (VR, 2026)