Why might dreams change at altitude?

Question of the Week, from the Naked Scientists

In our Question of the Week, Andrew wants to know why many people may experience dreams differently when holidaying in the mountains. To find out what might be behind the 'high-definition' dreams associated with high places, James Tytko sought the help of Andrew Murray, Professor of Metabolic Physiology at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists