Fig. 5.
Neural network and listener performance in Experiment 3. (A) Listeners discriminated sounds with either a positive correlation between AD and SS (rAD,SS = 0.54, n = 20) or the counterbalanced negative correlation (rAD,SS = −0.54, n = 20). Consistent: blue; Orthogonal: red; Single-cue: green. (B) Listener performance. The dashed line at 50% accuracy indicates chance performance. Error bars denote SEM. No planned contrasts (paired t tests) revealed significant differences between Consistent and Orthogonal discrimination performance. (C) Model representations of stimuli at the end of simulation. (Left) Simulations of the Hebbian network; (Center) anti-Hebbian network; (Right) PCA network. Representations are plotted in first-output-unit by second-output-unit space. (D) Measures of Euclidean distance between test points throughout the simulation for each model.