Figure 7
Graded transitions into visually-guided behavior.
A quantitative measure ‘z’ is obtained by subtracting visual and non-visual factors, plotted as a function of training for groups trained with varying CS+ similarity (see Methods and Results). The transitions to visually-guided behavior were detected by minimizing the sum of the squared errors between the dataset and a single free-knot linear spline34. The strength of these transitions is proportional to the differences in the slopes around the transition points, as indicated by the arrows. Stronger transitions are observed when mice are trained with decreasing (in red) CS+/CS− similarity, as opposed to increasing similarity (in blue; see Results for statistical details).
