Playing video games, tennis may enhance memory

The latest study established that dopamine in the brain can be naturally activated through behavioural actions and that these actions enhance memory retention. The study tested 120 mice to establish a link between locus coeruleus (LC) neurons and neuronal circuits of the hippocampus -- the region of the brain responsible for recording memories -- that receive dopamine from the LC. One part of the research involved putting the mice in an arena to search for food hidden in sand that changed location each day.