olds pooled across contrast conditions were significantly higher at
the 30 and 60 ms ISIS compared with the pooled no-sound mean (30
ms= 2.31, df = 8, p = 0.049; 60 ms: t = 3.17, df = 8, p = 0.013).
At the 0 and 90 ms ISIS, the increase in threshold was not significant
(p>0.05). When contrast conditions were analyzed separately,
a marginal effect of sound on orientation judgments at the 26%
contrast level was revealed in a paired-samples t-test comparing the
no-sound condition with the sound conditions collapsed across
onset asynchronies (t 2.248, df = 5, p 0.07). At the 36%
contrast level, the data consistently showed the same pattern of
variation, although no effect of sound was observed (p > 0.05).
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