Figure 6.

Results of the orientation discrimination task in multiple short staircase condition (B, C) and single staircase condition (D, E). A, Stimulus configuration. The orientation discrimination task was performed at loc1, and transfer of learning was tested at the untrained diagonal location (loc2). B, C, Session-by-session threshold analysis and a summary of MPI for the orientation learning used with multiple short staircases. Transfer of learning was shown in green circles in B and the green bar in C. The amount of transfer at the untrained diagonal location (green bar) was equivalent to learning at the trained location (blue bar). D, E, Results in the single staircase condition. The same training procedure did not promote transfer comparable to C when the task difficulty was highly increased.