Juxtaposition

... If an emotion is a collection of changes in body state connected to particular mental images ... the essence of feeling an emotion is the experience of such changes in juxtaposition to the mental images that initiated the cycle. In other words, a feeling depends on the juxtaposition of an image of the body proper to an image of something else, such as the visual image of a face or the auditory image of a melody ...

-- Antonio Damasio Descartes' Error: Emotion, Reason, and the Human Brain