Fig. 7
The curves of the CSF parameters under the influence of breathing are simulated by referring to the values of the breathing effects in Table 2. The inspiratory interval (0°–180°) is shown in red on the X-axis, indicating the process of increasing chest strap pressure, while the expiratory interval (180°–360°) is shown in blue. The middle line on the Y-axis represents the mean value of each parameter, taking into account that the mean of the net flow is 0 ml/min. The dashed interval represents the positive part of the net flow (Qnet), indicating that the CSF is flowing towards the cranium. 33° in A) represents the ΦQnet°