Sense of presence has not been the central focus of much scientific study. The neuroscience of a single body cannot adequately understand sense of presence. Social psychology that does not recognize the biological constraints of separate human bodies cannot either.
Scientific interest in the connection between biological hardware and relations between organisms appears to be growing. Oxford University Press has just announced a new journal entitled Social Cognitive and Affective Neuroscience. This area of research points to better understanding of sense of presence.