Figure 6.

The percentage of recording sites tuned to the task-relevant stimulus feature is correlated with the degree of perceptual learning. A, Percentage of AI and SRAF recording sites tuned to the trained frequency range (TFR) in each FR-trained rat. B, Percentage of AI and SRAF recording sites tuned to the trained intensity range (TIR) in each LR-trained rat. The linear fit for each data set is represented by the dashed line. The upward triangle data point (A) and downward triangle data point (B) correspond to the rapid-learning FR rat and slow-learning LR rat, respectively, in Figure 2A–D. Solid gray lines represents the mean percentage of recording sites tuned to the TFR (A) and TIR (B) in control rats.