Who is here? The effect of felt presence from a scientific perspective

Are you familiar with the feeling that someone is nearby, even though you know for sure that this is not the case? But what does this feeling mean? When and why does the effect of such presence arise? In this... book, psychologist Ben Alderson-Day attempts to understand one of the most unusual experiences known to humanity.
 
Sensations that lie beyond our five senses have long occupied the minds of thinkers and scientists. The author tries to find answers to these questions in his comprehensive study of the phenomenon of felt presence. Is it a hallucination related to psychosis, a change in brain function, flights of imagination and perception, manifestations of the unconscious, or something else?
 
The book is based on the latest achievements in modern psychology, psychiatry, and neuroscience, as well as on the research results of the scientist himself and his colleagues. Within its pages, you will meet travelers, Antarctic explorers, mediums, marathon monks, extreme sports athletes, so-called tulpa creators, and many others who have encountered similar experiences.