In previous studies, we already showed that the rapid perception of faces, which are highly relevant visual inputs for infants, is shaped by another highly salient sensory signal for them, the mother’s body odor.

To do that, we relied on electroencephalography (EEG) and measured a face-selective neural response that is enhanced by the presence of the mother’s odor in the 4-month-old brain.

— Read more in Infants Use Mom’s Scent to Recognize Faces at Neuroscience News.