Altered Sense of Body Ownership and Agency in Posttraumatic Stress Disorder and Its Dissociative Subtype: A Rubber Hand Illusion Study.

Frontiers in Human Neuroscience
Daniela RabellinoRuth A Lanius

Abstract

Traumatic experiences have been linked to the development of altered states of consciousness affecting bodily perception, including alterations in body ownership and in sense of agency, the conscious experience of the body as one's own and under voluntary control. Severe psychological trauma and prolonged distress may lead to posttraumatic stress disorder (PTSD). Together, symptoms of derealization and, related specifically to the sense of body ownership and agency, of depersonalization (where parts of the body or the entire body itself is perceived as detached and out of control), constitute the dissociative subtype (PTSD+DS). In this study, we explored the Rubber Hand Illusion, an experimental paradigm utilized to manipulate sense of body ownership in PTSD (n = 4) and PTSD+DS (n = 6) as compared to healthy controls (n = 7). Perceived finger location and self-report questionnaires were used as behavioral and subjective measures of the illusion, respectively. In addition, the correlation between the illusion's effect and sense of agency as a continuous feeling of controlling one's own body movements was explored. Here, a lower illusion effect was observed in the PTSD as compared to the control group after synchronous stimulatio...Continue Reading

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Citations

Feb 20, 2020·Movement Disorders Clinical Practice·Isaiah KletenikBrian D Berman
Sep 29, 2019·Neuroscience and Biobehavioral Reviews·Stefan TschoekeDana Bichescu-Burian
Jan 31, 2020·Neuroscience and Biobehavioral Reviews·Paul FrewenGeorg Northoff
Dec 29, 2020·Frontiers in Neuroscience·Daniela RabellinoRuth A Lanius

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