Fig. 3From: Effects of olfactory stimulation by α-pinene on autonomic nervous activityThe 30-s means and overall mean heart rate during olfactory stimulation by α-pinene or control. a Changes in each 30-s mean heart rate over 90 s. b Overall mean heart rate. Data are expressed as the mean ± standard error, N = 13, *P < 0.05 as determined using the paired t test (one sided)Back to article page