Chapter 11 discusses the limits and mechanisms of our perceptual faculties for auditory rhythm. Perhaps more than vision, a consideration of auditory perception, and our auditory perception of rhythm in particular, reminds us that the perceptual process is not a linear chain of information from the external world to the mind, but an active interplay between mind and world. But while considering our senses as perceptual systems—as cross-modal—solves some problems of perception, it creates other, perhaps deeper ones, the author argues. In the case of musical rhythm, our rhythmic percepts are often non-veridical, as we add accents, beats, and grouping structure to otherwise undifferentiated stimuli.