Professor Fred Mast, of the University of Lausanne, said: "I think that we can become overloaded. It depends on the situation, but I think we are underestimating the brain's capacity to adapt to new challenges.
"Studies have been done showing that people can actually enhance their cognitive abilities, which helps them to process more information at the same time. And their performance even transfers to other tasks."
clipped from: news.bbc.co.uk