Figure 3

Distribution of vasomotion frequencies at rest. Kolmogorov-Smirnov test: p < 0.05 NS and HS periods versus H period. Friedman test: *p < 0.05 NS period versus H period, $p < 0.05 HS period versus H period. cpm, cycles per minute; H period, set of measurements obtained when the patients were sedated by midazolam; HS period, set of measurements obtained when the patients were sedated by midazolam and sufentanil; NS period, set of measurements obtained when the patients were non-sedated.