Project Summary: The aim of my project was to determine whether human observers can learn to optimally integrate arbitrary visual and vestibular inputs when perceiving own whole-body rotations. We tested whether subjects learn to integrate whole-body yaw rotations with visual roll rotations when presented in a congruent and temporally synchronized manner. We predicted that there would be little or no initial integration of the two arbitrary cue pairings but that integration would occur over time with repeated exposure to the two congruently occurring stimuli.