Coherent, unambiguous and stable perceptual experiences result from the ability to merge concurrent information provided by different senses26,43,50,72. Multisensory integration occurs when stimuli from different sensory systems are combined in close temporal or spatial proximity, improving their detection2,12,25,50,76. However, we experience illusory percepts whenever sensory inputs from different modalities are incoherent45,53,76,80,90. Crossmodal illusions represent useful paradigms to assess how multisensory integration affects sensory perception in healthy and pathological conditions17,77,78, as shown by the Sound-Induced Flash Illusion (SIFI).
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