[The previous experiment](https://osf.io/j4q87/) revealed stark asymmetries in how often horizontally-moving probes were noticed. Probes that began behind the player and overtook them, ending in front of them, were noticed much more frequently than probes that did the reverse.
These conditions differ in two critical ways. Overtaking probes begin in a less attentionally relevant area and move into a more critical one. However, overtaking probes also spend more time near to the player during their trajectory than the passing probes. The asymmetry in noticing could have nothing to do with attentional relevance, and could simply be a function of how close the probe is to the player as it moves.
In this experiment, we control for the probe's distance to the player during its trajectory in an attempt to more directly test whether probes that move into highly relevant areas are noticed more than probes which do not.
