 Hi everyone, my name is Launton. Here, I'll give a brief summary of my work at the RISLAB on predicting fusion of dacotic valves in normal hearing listeners with a physiologically based model. When normal hearing listeners are presented with dacotic valve pairs with different fundamental frequencies, they most often identify the two valves correctly. For example, when A as in hit with a fundamental frequency of 109 Hz and A as in hot with a fundamental frequency of 130 Hz are presented to opposite ears, listeners can correctly identify both A and A. On the other hand, when the fundamental frequencies of the two valves are the same, the listeners tend to identify only one valve. That is, the listeners fuse the two valves. For example, when A and A are both presented with a fundamental frequency of 109 Hz, the subject may tell you that they heard an ad as in hot. We used a modeling approach to understand this phenomenon. The valve identification model includes an alternator model from Zilani et al. 2014 and an inferior cliff model modified from Kearney et al. 2015. The process takes two steps. The first step uses the alternator model outputs of the two channels, one from each ear to determine whether the fundamental frequencies of the two valves in the dacotic pair are the same or not. In step two, if the fundamental frequencies are the same, the inferior cliff model outputs of the two channels were average to simulate the fusion perception. Otherwise, outputs of the two channels were used to predict the valve responses separately. Predictive valve identification is based on the similarity between model output and response templates generated for 90 single valves. Predictive valve identities are based on category boundaries estimated from individual valve perception mapping obtained for each subject. Our preliminary data show that subjects often fuse dacotic valve pairs with the same fundamental frequencies but don't fuse with different fundamental frequencies, consistent with previous studies. The model prediction for fused valves are similar to those of human subjects, especially for low fundamental frequencies.