(A) Visual stimuli included targets and foils with high perceptual similarity drawn from three stimulus sets, including object silhouettes, kaleidoscope images, and object photographs. (B) Each trial used either a three-image or four-image display, with one unique target among two or three perceptually identical foils. Subjects were required to identify the unique target. (C) Two hypothetical object-to-object transition patterns are given for an example display, involving either no VTE or one VTE transition, shown in green.