Figure 2. Average changes in femoral and brachial blood flow and resistance during 20, 40 and 60 deg head-up tilt prior to removal of vestibular inputs.

Data were recorded in a darkened laboratory. Changes in blood flow or vascular resistance elicited by 40 () and 60 deg () tilt were significantly different from those resulting from 20 deg tilt. For points where no symbols are present, no significant differences were present. Error bars indicate one s.e.m.