The problem is to identify these rules and the mechanisms that implement them. Indeed, as efficiency is an absolute unit-free measure of performance, performance can be compared directly between diverse tasks. The Efficiency of Motion Transparency Motion transparency is simply the case of transparency in which the surfaces are in motion. Our research is concerned with identifying the information the visual system uses to recover transparent surfaces. That the same level of information is used in both tasks is consistent with the proposal that a common mechanism limits performance in both tasks.
Smooth pursuit occurs when the eyes move to maintain foveation of a moving object.
We impose a task on the observers to measure performance objectively. This allows us to compute the efficiency of the system. The Efficiency of Detecting Changes of Density in Random Dot Patterns. The ecological approach to visual perception . Signal detection theory and psychophysics .