Figure 4.

Two control experiments. A, TPE enabled learning transfer from grating orientation to dot pattern orientation with a near-threshold exposure task. The experimental design was similar to Figure 2B except that the exposure task (sessions 8–12) was a near-threshold mean luminance discrimination task. B, Effect of dot pattern exposure alone. The experimental design was similar to that in A except that there was no initial grating orientation training. Error bars indicate ±SEM.