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. Author manuscript; available in PMC: 2009 Jun 1.
Published in final edited form as: Cortex. 2007 Dec 23;44(6):649–664. doi: 10.1016/j.cortex.2007.12.004

Figure 1.

Figure 1

Grand average ERPs for correct trials during the item recognition test, elicited by photographs of objects for which the real three-dimensional object had been studied by performing an action (Perform Hit), studied by estimating the object's cost (Cost Hit), or were new at test (Correct Rejection). The ERPs are plotted in an approximate two-dimensional representation of the scalp electrode placements, with anterior (prefrontal) at the top and posterior (occipital) at the bottom; left in the figure corresponds to left on the scalp. The head icon at lower right also provides a two-dimensional representation of electrode locations. Sites corresponding to those in the 10-20 system are labeled. Positive polarity is plotted down here and in all subsequent figures.