For a recent review on the topic of felt presence:

Barnby, J.M., Park, S., Baxter, T., Rosen, C., Brugger, P., and Alderson-Day, B. (2023). The felt-presence experience: from cognition to the clinic. The Lancet Psychiatry, 10(5), pp.352-362.

For details of the Durham University surveys on felt presence:

Alderson-Day, B., Moseley, P., Mitrenga, K., Moffat, J., Lee, R., Foxwell, J., Hayes, J., Smailes, D., and Fernyhough, C. (2022). Varieties of felt presence? Three surveys of presence phenomena and their relations to psychopathology. Psychological Medicine, pp.1-9. 

A recent commentary on Stanford anthropologist Tanya Luhrmann’s work on religious and spiritual presences:

Alderson-Day, B. (2022). Two kinds of presence (at least): a commentary on T.M. Luhrmann’s “How God Becomes Real”. Religion, Brain & Behavior, 13(1), pp.39-47.