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. 2013 Apr 23;8(4):e62475. doi: 10.1371/journal.pone.0062475

Figure 5. Proportional enhancement of the illusion velocities induced by bi- and trimodal stimulation over the fastest unisensory illusion.

Figure 5

Histograms are the mean (± SEM) “multisensory index” MSI = [(multisensory velocity – highest unisensory velocity )/highest unisensory velocity ]×100.