The predictive processing theory is mostly applied to external experience - sensation through “exteroception”, that is through the five senses. However, in her book, [How Emotions are Made] (https://lisafeldmanbarrett.com/books/how-emotions-are-made/), Lisa Feldman Barrett argues that PEM applies to emotions as well as external experience. That is, sensory experience comes via interoception too - the sensations coming from within the body, whether sensory or emotional in nature.