PMC3184666_01
- Changes in high-frequency (HF) power and in the ratio of low-frequency (LF) to HF power (LF/HF) during the passive tilt testing.
hi-2006-2-126-g001.jpg
PMC3184666_01_hi-2006-2-126-g001.jpg
F1
The changes in HF and LF/HF during the tilt test are shown in Figure 1.