Three-dimensional motion aftereffects reveal distinct direction-selective mechanisms for binocular processing of motion through depth

• DOI: 10.1167/11.10.18
• Publication Date: 2011-09-27T01:57:00Z
• Authors: T. B. Czuba; B. Rokers; K. Guillet; A. C. Huk; L. K. Cormack
• Keywords: Monocular; Binocular disparity

Motion aftereffects are historically considered evidence for neuronal populations tuned to specific directions of motion. Despite a wealth motion aftereffect studies investigating 2D (frontoparallel) mechanisms, there is remarkable dearth psychophysical selective the direction through depth (i.e., 3D motion). We compared effects prolonged viewing unidirectional under dichoptic and monocular conditions found large that could not be explained by simple inheritance aftereffects. These results (1) demonstrate existence neurons as distinct from (2) show selectivity arises both interocular velocity differences changing disparities over time, (3) provide straightforward tool further probing mechanisms.