Colour-grapheme synesthesia affects binocular vision.

Front Psychol · 2011 · PMC3210486 · PMID 22073035

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difference was apparentp = 0.4not close (p > 0.1)

Using paired t -tests, we found that for synesthetes, total fraction dominance was significantly larger for achromatic digits than for achromatic non-digits [ t (11) = 2.3, p = 0.04], whereas no such difference was apparent for controls [ t (11) = 0.8, p = 0.4].

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