Sequential perceptual learning of letter identification and "uncrowding" in normal peripheral vision: Effects of task, training order, and cholinergic enhancement.

Interestingly, the difference in improvement in isolated letter identification between amblyopes who first performed sequential training with isolated letter training with donepezil ( Chung et al., 2017 ) ( Figure 5 , white bar, right panel) and the corresponding normal periphery group ( Figure 5 , red bar) approached significance at the p = 0.05 level (Mann-Whitney U = 21, z score = 1.92, p = 0.055), perhaps because the amblyopic observers had more room for improvement.

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