One of the tantalizing concepts introduced by Aushra Augusta is the metaphor of "bodies" and "fields" in perception. She wrote that reality consists of aspects that can be broadly compared to bodies in physics and aspects that can be called "fields." Fields are the space between bodies (or objects) where interaction takes place.
Extraverted functions perceive aspects of bodies that can be discerned in and of themselves: shape, color, strength, processes within the object, the object's external activity, direction of movement, potential for change and development, etc.
Introverted functions perceive fields between bodies, or - as Augusta might say - "the reflection of one body within another." When these functions are at work, the individual has a certain attitude towards an object or objects. This attitude is what Augusta is comparing to a "field" in physics. These "attitudes" include: feelings of attraction/repulsion, like/dislike, logicalness/illogicalness, comfort/discomfort, serenity/worry, etc.
Extraverted perception focuses the individual's attention on external objects. Introverted perception focuses attention on the individual's perception of objects.
As I write at Socionics.us,
Objects (bodies): things that can be observed, studied, and discussed apart from the subject (observer)
Fields: things that are perceived through the subject by means of attitudes and cannot be studied apart from the subject