James R. Brockmole, Ranxiao Frances Wang, & David E. Irwin
University of Illinois, Urbana-Champaign

Abstract
Integration of distinct percepts occurrs when the delay between them is <100 msec.
Integration also occurs when the delay exceeds 1000 msec. Characteristics of visual memory
during this later integration process were investigated. Two dot arrays were presented within
a grid. Subjects identified the one space left unfilled. Integration was possible whether
subjects were biased to remember the dots or the spaces left empty, suggesting integrable
memory is flexible. Integration also occurred when the grid moved during the delay. Earlier
displacements led to better performance, indicating memory for the first array is obtained
quickly and can be transferred across changes in spatial location, but integration benefits from
the opportunity to reconstruct the remembered array in the appropriate location.