Trend plots of mean ICP/mean ICP wave amplitude of Signals 1 and 2 (PatID 7). The trend plots of mean ICP and mean ICP wave amplitude (MWA) of (a) Signal 1 and (b) Signal 2 of PatID 7 is shown [Average of mean ICP: 16.3 mmHg (Signal 1), 6.4 mmHg (Signal 2). Average of mean ICP wave amplitude: 4.5 mmHg (Signal 1), 4.2 mmHg (Signal 2)]. The vertical arrows in (a) indicate shifts in mean ICP without accompanying changes in MWA. The shifts of mean ICP in (a) were not accompanied by simultaneous shifts in mean ICP in (b).