Learning of interpolation in 2 and 3 dimensions

We investigated learning of spatio-temporal interpolation in depth and its relation to spatio-temporal interpolation in two dimensions by means of a v ernier discrimination task. Performance improved with training but improvem ent did not or only partially transfer between opposite directions of motio n in depth. Improvement was also at least partly specific for the eye and f or the direction of two-dimensional motion used during monocular training. This specificity might explain the apparent specificity of interpolation in three dimensions. Training with stimuli moving in two dimensions increased performance for a stimulus moving in depth. The results indicate that impr ovement in spatio-temporal interpolation occurs at least partly on a stage preceding stereoscopic vision, and are a rare example for transfer of impro vement between different perceptual tasks. (C) 1999 Elsevier Science Ltd. A ll rights reserved.