Tinnitus (“ringing in the ears”) is a highly prevalent condition affecting 6% of the New Zealand general population and 13.5% of over 65’s. Although there is no cure for tinnitus, a short loud sound can suppress tinnitus for a brief time. This suppression is called Acoustic Residual Inhibition (ARI). This research will investigate the behavioural effects and neural correlates of ARI. It will use Electroencephalography and a computer model of neural activity developed in NZ, called the NeuCube, to examine the processes responsible for tinnitus generation and its suppression.