Figure 5.

Temporal trajectory analysis as a function of the observer's CFF. (a) The fraction of time each animal appears stationary, τ, versus the duration of the shortest perceivable stop Δt. Δt is a property of the visual system of a potential observer, estimated as the reciprocal of its CFF. (b) Cross sections at the three stop-duration values denoted by the dotted grey line are shown to highlight how an observer with a given set of visual capabilities might categorize the movements of each group.