Researchers at London's Birkbeck Babylab, which is part of Birkbeck, University of London, study brain and cognitive development in infants from birth through childhood.
In this photo, Leo, 9 months, takes part in an experiment at the Birkbeck Babylab Centre for Brain and Cognitive Development, in London, England, March 3, 2014.
The experiment uses an electroencephalogram (EEG) to study brain activity while the baby examines different objects of varying complexity.
