Influence of combined visual and vestibular cues on human perception and control of horizontal rotation.
Measurements are made of manual control performance in the closed-loop task of nulling perceived self-rotation velocity about an earth-vertical axis. Self-velocity estimation is modeled as a function of the simultaneous presentation of vestibular and peripheral visual field motion cues. Based on measured low-frequency operator behavior in three visual field environments, a parallel channel linear model is proposed which has separate visual and vestibular pathways summing in a complementary manner. A dual-input describing function analysis supports the complementary model; vestibular cues dominate sensation at higher frequencies. The describing function model is extended by the proposal of a non-linear cue conflict model, in which cue weighting depends on the level of agreement between visual and vestibular cues.
D005583:Fourier Analysis; D006801:Humans; D008433:Mathematics; D010465:Perception; D012399:Rotation; D013647:Task Performance and Analysis; D014722:Vestibule, Labyrinth / Q000502:physiology*; D014785:Vision, Ocular; D014794:Visual Fields; D014796:Visual Perception