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Figure 3 Low frequency (LF) power during control and saline tilt: A, LF power, B, peak LF power, and C, LF/high frequency (HF) ratio. With upright tilt during the control state, there was a rapid and early peak in LF power. With continued upright positioning, a progressive decrease in LF power was observed. However, after saline administration, LF power remained constant throughout the duration of upright tilt. Solid line = control tilt; dashed line = saline tilt. #p < 0.05, early tilt vs. supine. *p < 0.05, faint/late tilt vs. early tilt.
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