Figure 2.

Experimental procedure. Four cue stimuli are presented for 800 ms each with an 800 ms inter-stimulus-interval followed by a four second delay and an 800 ms probe. Three working memory conditions require participants to hold relevant information in memory, ignore irrelevant information and determine if the probe matches any item stored in memory. The fourth condition instructed participants to passively view the stimuli and respond to an arrow as the probe.