We are only on the cusp of truly understanding a baby’s brain.
I believe they are communicating all the time we are just not yet trained to “LISTEN” to what they have to say because we are all tied up into our words!
This is a great video about babies and brain development.
http://www.youtube.com/watch?v=qQuiHyv6VrQ&feature=youtu.be
http://astore.amazon.com/lifsjouagrass-20/detail/B005ELMC0Q