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. Author manuscript; available in PMC: 2013 Jul 27.

Published in final edited form as: Brain Res. 2012 May 28;1467:27–41. doi: 10.1016/j.brainres.2012.05.045

Figures 2 a,b — Significant positive and negative loadings as ascertained by the bootstrap test for both Shape (red color) and Letter pattern (blue color) derived during RET, overlaid on a probabilistic gray-matter mask. A threshold of |Z|>3.09 was adopted. Positive loadings, i.e. indicating increasing activation with increasing memory load, are shown in figure 2a, negative loadings, i.e. indicating decreasing activation with increasing memory load, are shown in figure 2b.

Figures 2 a,b — Significant positive and negative loadings as ascertained by the bootstrap test for both Shape (red color) and Letter pattern (blue color) derived during RET, overlaid on a probabilistic gray-matter mask. A threshold of |Z|>3.09 was adopted. Positive loadings, i.e. indicating increasing activation with increasing memory load, are shown in figure 2a, negative loadings, i.e. indicating decreasing activation with increasing memory load, are shown in figure 2b.