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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: J Cogn Neurosci. 2011 Jan 24;23(10):2852–2863. doi: 10.1162/jocn.2011.21625

Figure 5.

Figure 5

Correlations between BOLD activity over time in the left intraparietal sulcus and behavioral responding at the end of the trial. (A) Experiment 1. (B) Experiment 2. The left intraparietal sulcus was defined by the area of overlap between conjunction analyses in the two experiments (red area in Figure 3). The BOLD activity used was the mean difference between low-load and high-load contrasts, averaged across all such available contrasts (in Experiment 1, 4vis vs. 2vis and 2vis2aud vs. 2vis; in Experiment 2, these same contrasts plus 4vis vs. 2aud and 2vis2aud vs. 2aud). The behavioral responding reflects the number of additional items held in working memory, or increase in k, in the 4-item conditions compared to the 2-item conditions, averaged across all such available contrasts, as described for the BOLD activity. Solid points indicate significant correlations, p<.05, with df=15 in Experiment 1 and df=14 in Experiment 2.