Fig. 4From: Assessment of cerebral blood flow in patients with multiple chemical sensitivity using near-infrared spectroscopy—recovery after olfactory stimulation: a case–control studyTopographical maps of average z-scores for oxyHb between patients with MCS (n = 6) and controls (n = 6). MO mandarin orange, Pf perfume, NO non-odorant, JC Japanese cypress, Mt menthol. Numbers in parentheses indicate the order of the 10 repetitions (1–10)Back to article page