Dichoptically cancelled motion.
We sought to determine whether or not motion-from-texture mechanisms have access to monocular input. Adopting a strategy used by Kolb and Braun (1995. Nature, 377, 336-338), we created drifting textures that were invisible to purely binocular processes. Monocular signals readily conveyed motions defined by local orientation and flicker. However, when left- and right-eye signals were displayed simultaneously, only flicker motion was visible. We conclude that motion-from-texture mechanisms do not have access to monocular input. Further evidence suggests that motion from texture involves attentional tracking.
Solomon
J A
JA
Institute of Ophthalmology, London, UK. j.solomon@ucl.ac.uk
Morgan
M J
MJ
D004192:Discrimination, Psychological / Q000502:physiology*; D005403:Fixation, Ocular; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011594:Psychometrics; D012399:Rotation; D015349:Vision, Monocular