Figure 5

(A) Proportion response by True groups in Discrimination-85 with noise. S+ representing responses to rewarded stimuli and S− representing responses to unrewarded stimuli. The following differences were significant (indicated by asterisk): Silence (S+ vs. S−; p < 0.001, Low noise (S+ vs. S−; p < 0.001), High noise (S+ vs. S−; p < 0.001), and Silence vs. High (S+ vs. S+); p 0.017). Error bars represent standard error. (B) Proportion response by True groups in Probe trials with noise. P + and P- were based on whether stimuli was produced by the same birds as the S+ rewarded or the S− unrewarded stimuli. The following differences were significant (indicated by asterisk): Silence (S+ vs. S−; p < 0.001, Low noise (S+ vs. S−; p < 0.001), and High noise (S+ vs. S−; p < 0.001). Error bars represent standard error.