Fig 1. Specific response of the two groups BM/VC (manganese exposed) and GL (control) for (a) odor intensity rating evaluated during the fMRI session in procedure definition units (p.d.u.); (b) volume of the olfactory bulb in mm³; (c) Estimated sustained response to olfactory stimulation in the specific volume of interest (VOI) including olfactory tract and primary olfactory cortex in perceptual variation of the BOLD signal.

The * in the figure corresponds to significant level p < .05.