( ) Experimental design. Upper panel depicts a trial in which participants remembered both orientations, and were sequentially tested on the two orientations. Lower panel depicts a trial in which participants initially remembered both orientations, but upon cueing maintained one item and discarded the other. Abbreviations are used here and in further figures. Note that the order of cueing the left or right stimulus was counterbalanced within RB trials as well as between all trials. ( ) Behavioral performance was measured by the difference in degrees between the memory and test orientation that participants discriminated at a 75%-correct threshold. Lower difference discrimination represents better memory.
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