The perceived direction of the binocular image.
D003118:Color Perception / Q000502:physiology; D003867:Depth Perception / Q000502:physiology*; D004292:Dominance, Cerebral / Q000502:physiology; D005133:Eye Movements; D005403:Fixation, Ocular; D006801:Humans; D011601:Psychophysics; D012399:Rotation