 It is sometimes said that perceptual experiences represent what they do nonconceptually, which is often times equated with analog content (realized in picture-like continuous representations). In this context we can take this as a claim about the way experiences are representationally structured: they are not structured out of concepts (discrete representations) as thoughts are usually thought to be. Every sensory modality has a range of proprietary qualities that they can detect. Pain experiences seem no different, although they may be less rich in terms of their informational content compared to vision for instance. Nevertheless, it is reasonable to argue that qualitative differences in pain experiences are due to their representing different bodily conditions. Tye lists a number of candidates: