Fig. 4

Relationship between changes in diastolic blood pressure (ΔDBP) with fragrance inhalation of grapefruit essential oil from baseline and those in burst frequency of MSNA (Δ burst frequency). Values are calculated as [5 min average for last half of fragrance inhalation] − [5 min average for baseline] for each individual. Data from one subject (shown in parentheses) was excluded from the analysis as an outlier in the Grubbs test