ScienceDaily (2010-12-17) — A mother’s voice will preferentially activate the parts of the brain responsible for language learning, say researchers. The research team made the discovery after performing electrical recordings on the infants within the 24 hours following their birth. The brain signals also revealed that while the infants did react to other women’s voices, these sounds only activated the voice recognition parts of the brains.

http://www.sciencedaily.com/releases/2010/12/101215195234.htm#