Object updating influences the perceptual asynchrony illusion

When two attributes are alternated asynchronously, a target that is first blue, then red for equal durations, is reported as red above chance. This perceptual asynchrony illusion has been explained by the object-updating hypothesis, which argues that asynchronously-paired features are vulnerable to updating by the most recent feature value. According to object updating, when one colour is shown for longer than the other in this task, the colour shown last should bias colour reports. The colour of shorter duration was rarely reported when it appeared first, but frequently reported when it appeared last, consistent with object updating.