Figure 5.
Schematic illustrations (A,C), predictions (B,D) and empirical results (E,F) for component- dependent and pattern-dependent VPL.
A.
The component-dependent VPL takes place at the lowest level of motion processing, as indicated by the red rectangle. Here, training on a component stimulus should only transfer to the plaid stimulus that comprises the trained component. Moreover, training on a plaid stimulus should only transfer to its two constituent components.
B.
Learning effects as predicted by component- dependent learning in panel A.
C
,
D
. Illustrations of the pattern-dependent perceptual learning and its predicted learning effects, following conventions in panels A and B. Here, plasticity involves the middle stage of motion processing.
E.
Duration thresholds at pre-/post-test across stimulus conditions in the component (left panel) and the plaid training (right panel), respectively.
F
. Learning effects quantified as percent of improvement (PI%) across stimulus conditions and training regimes. The overall pattern mimics the predictions in panel D, indicating plasticity associated with the middle-level of motion analysis. For all subplots, error bars denote ± 1 SEM across subjects. Significance symbol conventions are
*
p < 0.05;
*
*
p < 0.01; ***p < 0.001; n.s.: non- significant. Same definitions of error bars and symbol conventions are kept for all figures in this paper.
