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. 2012 Aug 22;7(8):e42929. doi: 10.1371/journal.pone.0042929

Figure 1. This is a clockwise depiction of a tracking trial.

Figure 1

First highlights indicated what the targets are. Then all objects move around for 2–6 seconds. Then all objects are masked, one masked item is highlighted, and the subject indicates if the highlighted item is the same as the centrally depicted probe.