ABSTRACT
This chapter explains several ways in which perceptual experience may be multisensory, and presents evidence to support the claim that mature species-typical perceptual experience in humans is richly and deeply multi-sensory. It also explains why this matters and discusses raises two outstanding issues concerning psychological taxonomy for multisensory perception: how to type richly multisensory experiences by modality according to their character, and why multi-sensory effects involve perception rather than extra-perceptual cognition. Sensory processes might interact extensively while every conscious aspect of a perceptual experience remains associated with some specific modality or another. A case in which someone multimodally perceptually experience an instance of a relational feature whose relata are accessible through different modalities differs consciously from a case in which someone perceptually experience the relata but not the relation. Experiences can be typed by modality even in the face of perception's constitutively multisensory character.
