Your baby's face recognition
It is important that your baby recognises faces, as they are dependent on those around them for everything. Researchers used electrodes to see which areas of the brain responded when babies looked at faces, and found that the responses to familiar faces and unfamiliar faces were different. So, one of the first things that you might notice your baby remembering is people.
Reference:
Cohen, D. (2018). How the child’s mind develops. 3rd edn. Abingdon: Routledge.