Reducing crowding by weakening inhibitory lateral interactions in the periphery with perceptual learning.

The d ' results reflect results obtained by measuring thresholds: sensitivity decreases progressively as λ decreases, and the effect of learning is only significant at 2λ ( t 7 = −2.64, p = 0.034) and nearly significant at 3λ ( t 7 = −2.11, p = 0.073); at 4λ and 8λ, where sensitivity is very high, there is no significant learning effect ( t 7 = −1.57, p = 0.16 and t 7 = −0.75, p = 0.48, respectively).

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