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. 2012 Nov 5;7(11):e46739. doi: 10.1371/journal.pone.0046739

Figure 5. Interaction between groups and tasks for the PIy 1.

Figure 5

Power index of anteroposterior body sway for the low frequency band (0–0.5 Hz) believed to be control by vision. Bars represent the standard error, asterisks indicate significant difference (p<0.05). Spherical lenses of −3 diopters used in ACCOM3 condition to induce strong accommodation increases considerably PIy 1 for dyslexics but decreases for non dyslexics. On the other hand, non dyslexics show similar PIy for all other viewing conditions while dyslexics show increase PIy for frequency also for the PRISM condition.