Table 1.

Locations of increased blood flow during aversive olfactory stimulation by sulfide odorants

Area	x	y	z	Z score
Left amygdala	−34	−4	−11	5.2
Right amygdala	26	−1	−14	5.0
Left orbitofrontal cortex (BA 11)	−42	35	−14	4.7

Stereotactic coordinates (in millimeters) identify the location of the maxima of rCBF change after intersubject averaging and anatomical normalization to the atlas of Talairach and Tournoux (29). x, medial–lateral position relative to the midline (+ = right hemisphere); y, anterior–posterior position relative to the anterior commissure (+ = anterior); and, z, inferior–superior position relative to the intercommissural plane (+ = superior). For the purposes here, a threshold of Z score = 4.2 was used; such a conservative cut-off corresponds to a statistical significance of at least P < 0.05 regardless of the method used to correct for multiple comparisons.