For example, Roy et al. (2011) found that, opposite to the prediction of the kappa effect, "Increasing the distance between sound sources marking time intervals leads to a decrease of the perceived duration".
According to the constant velocity hypothesis proposed by Jones and Huang (1982), the brain incorporates a prior expectation of speed when judging spatiotemporal intervals.
[9] Evidence for the role of a uniform motion expectation in temporal perception comes from a study[10] in which participants observed eight white dots that successively appeared in one direction in a horizontal alignment along a straight line.
A possible explanation is that it is difficult to perceive a uniform motion from such varying, complicated patterns; thus, the context of observed events may affect our temporal perception.
The Bayesian model reaches an optimal probabilistic inference by combining uncertain spatial and temporal sensory information with a prior expectation for low-speed movement.
The expectation that stimuli tend to move slowly results in the perceptual overestimation of the time elapsed between rapidly successive taps applied to separate skin locations.
Simultaneously, the model perceptually underestimates the spatial separation between stimuli, thereby reproducing the cutaneous rabbit illusion and the tau effect.
He noted that, when stimuli move rapidly across space, "perception strikingly shrinks the intervening distance, and expands the elapsed time, between consecutive events".