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. Author manuscript; available in PMC: 2010 Jan 16.
Published in final edited form as: Brain Res. 2008 Oct 21;1249:148–161. doi: 10.1016/j.brainres.2008.10.009

Table 1.

Sequential latent root testing results for contrasts representing young and elder brain activity associated with Visual WM task

2-Dimensional effects of interest Test for at least one Component
 Test for two components
 Inferred number of spatial patterns at α = 0.05
F(1089, 52448) p F(544, 35030) p
Load-dependent processing during memory set presentation 5.22 <.0001 .84 1.00 1
Load-dependent processing during retention delay 1.41 <.0001 1.18 .003 2
Load-dependent processing during probe presentation 2.76 <.0001 .95 .81 1