RS McConnell (Consultant Neurosurgeon) and Colin Williamson (Head Injury Liaison Nurse) from the Royal Victoria Hospital Belfast experience a brief introduction to psychoacoustics (how the brain perceives sound) by Dr Paul Stapleton in the Sonic Lab at Queens. The Sonic Lab has the unique capability of sending sound 360 degrees around the room. Paul led Mr McConnell and Colin through an exercise where they had to pinpoint where the sound was coming from, highlighting the perceptual restrictions we have when locating sound when our eyes are closed.