Fig. 3

Changes over 24 h

(A) ICP was recorded supine at set timepoints throughout waking hours. Graph shows ICP in mmHg at 09:00, 11:00, 18:00 and 23:00. (B) ICP in mmHg was recorded overnight whilst supine, between 23:00 and 07:00, each value represents recorded mean ICP over the preceding hour. n = 6. Hierarchical regression. (C) Amplitude in mmHg at the beginning of the night recording and at the end of the night. Paired t test. Data presented as mean ± standard error of the mean. ns = non-significant, *P = < 0.05