Fig. 2.

Illustration of the mask and target stimuli used in the experiment. (A) Display with an example random-line pattern used for all of the masks in the experiment. (B) Example of the two-line drawings used as targets, superimposed on the random-line pattern, which is shown here at 60 % transparence for illustrative purposes. In the experiment, the random-line pattern was always shown at full contrast, as it is in panel A. (C) Example of the two-line drawings used as targets upon a blank white screen, as in the backward-masking conditions