Improving Dorsal Stream Function in Dyslexics by Training Figure/Ground Motion Discrimination Improves Attention, Reading Fluency, and Working Memory.

Conversely, when the multifrequency background pattern was presented at 20% contrast for the lowest spatial frequency target of 0.25 cyc/deg (complexity levels 4, 8, 12, and 16 in Table 2 ), contrast sensitivity was lower, being marginally significant [ t (21) = −1.99, p = 0.06], which is expected because at 20% contrast, the background activates parvocellular neurons more than magnocellular neurons (Kaplan and Shapley, 1986 ), making the task more difficult.

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