Most are in the temporal lobe or closely related to it, such as the amygdala, the hippocampus, the rhinal cortex in the temporal lobe, and the prefrontal cortex.
Depending on the species, oxytocin receptor-expressing cells are located in other areas, including the amygdala and bed nucleus of the stria terminalis.
This means that by utilizing the perception abilities of the amygdala that emotional properties of contralesional stimuli can be extracted despite pathological inattention and unawareness.
It's that some fleshy circuit-breaker in his head has been knocked offline -- a sprained amygdala, a broken frontal lobe, a locus coeruleus in disrepair.
One definition includes the olfactory bulb, olfactory tract, anterior olfactory nucleus, anterior perforated substance, medial olfactory stria, lateral olfactory stria, parts of the amygdala and prepyriform area.