Unlike a centralized detection system, where sensors\' raw observation data is transmitted back to the decision fusion centre, a distributed detection system allows local intelligent sensors to report their own decisions to the fusion centre. Traditionally, a dedicated communication channel will be established between each sensor and the fusion centre. Local decisions are transmitted without interfering with each other by using such a parallel access scheme. In this talk, however, we will be looking at the interesting problem of distributed detection over multiaccess channels. We will analyze the performance of the multiaccess scheme and show that under certain circumstances having multiple sensors transmitting simultaneously could offer a better performance.