Exogenous attention generalizes location transfer of perceptual learning in adults with amblyopia.

A 3-way (Session: pre-test, post-test X Eye: amblyopic, fellow X Group: Neutral, Attention) mixed ANOVA of all observers' logMar visual acuity ( Figure S10 for individual scatterplots; higher values are worse) revealed highly significant main effects of Session ( F (1, 17) = 22, p < .001, η 2 G = .10; pre-test M = 0.27 ± 0.05, post-test M = 0.15 ± 0.04), Eye ( F (1, 17) = 42, p < .001, η 2 G = .57; amblyopic eye M = 0.43 ± 0.04, fellow eye M = −0.01 ± 0.02), and a marginal 2-way interaction of Session and Eye ( F (1, 17) = 4.3, p = .06, η 2 G = .03), indicating that training on a contrast sensitivity task also improved acuity ( Figure 4 A).

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Note, however, that at the group level, mean changes in the critical spacing of crowding did not reach statistical significance.

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