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. 2013 Jul 30;24(12):3301–3309. doi: 10.1093/cercor/bht188

Figure 3.

Figure 3.

Age effects on fast sleep spindle density. (A) electroencephalography (EEG) topographic plots of fast spindle density in all adults with young (top) and older (bottom) adult plots to the right, and (B) the fast sleep spindle density difference between young and older adults, significant over prefrontal EEG derivations. Red box indicates the stage 2 NREM sleep fast spindle density at the F3 derivation, plotted as a bar graph (C) in young (red) and older (blue) adults. * denotes significance at P < 0.05.