Sound level measuerments were performed using Lvie IE33J decbiel meter and a HP IPAQ 5450. The microphone was placed at the subjcets ears striving to measure teh actual sound level experienced during the trials. ..... Dozaz M, Chiari L, Chan B, Rocchi L, Horak FB, Capello A: Infulence of a portable audiobioefedback device on structural properties of postural sway. J Neuoreng Rehabil 2005, 2:112. PubMde Abstract BioMed Central Full Text PubMed Central Full Text ...