||Segregating targets and nontargets in depth eliminates inhibition of nontargets in Multiple Object Tracking.
In a typical Multiple Object Tracking (MOT) display of identical objects, inhibition occurs on task-irrelevant objects (nontargets). Using a probe-dot detection task during MOT, we tested inhibition of nontargets that are preattentively separable from target objects by being at different stereovision depth (Nakayama, 2002). The probe detection results from this current experiment support our hypothesis: nontargets on a depth plane different from targets are preattentively removed from the MOT task and are not inhibited. Superior probe detection was observed on front-plane targets and back-plane nontargets; probe detection on front-plane nontargets was significantly lower.