New advances in brain imaging over the years has allowed researchers to study the sleeping brains of animals. But while scientists have learned much about animal sleep patterns, they have also noticed a discrepancy between the sleep patterns of animals in the wild versus those in laboratories. Neurophysiologist Niels Rattenborg addresses the complications of studying wild animals and how technology has allowed him to study the sleep activities of even the most far reaching migratory birds.
More from this series: Mind after Midnight

Image courtesy of Petras Gagilas; Recorded June 2011; Posted October 2011