The feeling that our body belongs to us, and that it is an essential part of ourselves, is a fundamental aspect of human self-awareness and individual psychological identity. The intimate relation between the sense of body ownership and the sense of self emphasizes the importance of understanding the former in order to access and comprehend the latter. However, it also outlines the challenge of objectifying the body by turning it into a subject of controlled experimental research. This dissertation describes a series of scientific studies in which an experimental method of body swapping was...