Fig. 3
From: Physiological effect of olfactory stimulation by Hinoki cypress (Chamaecyparis obtusa) leaf oil
The 30-s averages and overall mean oxy-Hb concentrations in the right prefrontal cortex during olfactory stimulation by Hinoki cypress leaf oil or control. a Changes in each 30-s average oxy-Hb concentration over 90 s. b Overall mean oxy-Hb concentration. Data are expressed as the mean ± standard error, n = 12, *P < 0.05 as determined by the paired t test (one-sided)