2008 | Longo, Matthew R. and Schüür, F. and Kammers, M.P.M. and Tsakiris, M. and Haggard, P.
Longo, Matthew R., Schüür, F., Kammers, M.P.M., Tsakiris, M., and Haggard, P. (2008) investigate the structure of embodiment using a psychometric approach. They analyzed structured introspective reports from participants experiencing the rubber hand illusion, revealing four major components: embodiment of rubber hand, loss of own hand, movement, and affect. In the asynchronous condition, an additional component, deafference, was identified. Further analysis of the embodiment of rubber hand component revealed three subcomponents: ownership, location, and agency. Ownership and location were significant predictors of proprioceptive biases induced by the illusion. The study suggests that psychometric tools can provide a rich method for studying the structure of conscious experience, and highlights the importance of dissociable components of embodiment. The results indicate that the rubber hand illusion selectively inverts the sense of embodiment concerning the rubber hand, with synchronous stroking leading to a stronger sense of embodiment. The study also shows that proprioceptive displacement is related to body ownership but not agency. The findings support the idea that embodiment is a complex experience with a characteristic structure, composed of multiple subjective components. The study provides a systematic approach to decomposing the bodily self, offering insights into the dissociation of ownership and perceived location, and the role of sensory conflict in the asynchronous condition. The results validate the use of the rubber hand illusion as an experimental manipulation of the normal sense of one’s own body, and demonstrate the utility of psychometric methods in studying complex conscious experiences.Longo, Matthew R., Schüür, F., Kammers, M.P.M., Tsakiris, M., and Haggard, P. (2008) investigate the structure of embodiment using a psychometric approach. They analyzed structured introspective reports from participants experiencing the rubber hand illusion, revealing four major components: embodiment of rubber hand, loss of own hand, movement, and affect. In the asynchronous condition, an additional component, deafference, was identified. Further analysis of the embodiment of rubber hand component revealed three subcomponents: ownership, location, and agency. Ownership and location were significant predictors of proprioceptive biases induced by the illusion. The study suggests that psychometric tools can provide a rich method for studying the structure of conscious experience, and highlights the importance of dissociable components of embodiment. The results indicate that the rubber hand illusion selectively inverts the sense of embodiment concerning the rubber hand, with synchronous stroking leading to a stronger sense of embodiment. The study also shows that proprioceptive displacement is related to body ownership but not agency. The findings support the idea that embodiment is a complex experience with a characteristic structure, composed of multiple subjective components. The study provides a systematic approach to decomposing the bodily self, offering insights into the dissociation of ownership and perceived location, and the role of sensory conflict in the asynchronous condition. The results validate the use of the rubber hand illusion as an experimental manipulation of the normal sense of one’s own body, and demonstrate the utility of psychometric methods in studying complex conscious experiences.