Figure 1.
Experimental design. (A) Schematic depiction of the scanner presentation of two paired and two unpaired stimuli. For the first 0.5 sec of a 0.5- to 11-sec ISI, the associative memory instruction of a plus-sign is present between two images that should be paired (1P and 2P) and is not present between two images that should remain unpaired (1U and 2U). (B) Schematic depiction of the recognition test conducted following the scan. Participants were asked if they remember seeing the image in the scanner (“poorly” if they think it is a novel item; “very well” if they remember seeing the item). If the image was presented in the scanner, participants were then shown a second screen with two choice images; they were asked to report which image (1 or 2) was the associated pair if the target image was paired or to report if the target image was unpaired (3).