The neural basis for a preference of yawning is apparent in babies as young as 5 months.
Infants take less than one second to completely process visual information. They also have the same temporal limitations in visual processing as adults.
Study reveals very young infants can perceive objects that older infants, children, and adults can not see due to a phenomenon called visual backward masking.
The upper visual field bias for faces emerges at around 7 months of age. Babies over 7 months developed a preference for memorizing the upper portions of a face.
