Table 1.

CSF Net Flow Differences

		Mean difference ± SEM [mL/min]	P‐value
Measurement 1	Expiration – Inspiration	–0.75 ± 0.20	0.010*
	No gating – Expiration	–0.26 ± 0.15	0.348
	No gating – Inspiration	0.49 ± 0.17	0.045*
Measurement 2	Expiration – Inspiration	–0.76 ± 0.20	0.008*
	No gating – Expiration	–0.39 ± 0.12	0.027*
	No gating – Inspiration	0.37 ± 0.18	0.196

Net CSF flow differences (mean ± SEM). Between the respiratory gating conditions and the corresponding P‐values, for the pairwise comparisons of the repeated measures ANOVA, for the first and the repeated net CSF flow measurements during expiration gating, inspiration gating, and without respiratory gating. Significant P‐values are represented by the asterisk symbol.