51. A Virtual Reality Full Body Illusion Improves Body Image Disturbance in Anorexia Nervosa
- Author
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Keizer, Anouk, van Elburg, Annemarie, Helms, Rossa, Dijkerman, H Chris, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Leerstoel Dijkerman, Afd Klinische psychologie, Leerstoel Elburg, Universiteit Utrecht, Experimental psychopathology, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Leerstoel Dijkerman, Afd Klinische psychologie, Leerstoel Elburg, Universiteit Utrecht, and Experimental psychopathology
- Subjects
Physiology ,Polymers ,Vision ,Social Sciences ,lcsh:Medicine ,Audiology ,Biochemistry ,Fats ,0302 clinical medicine ,Abdomen ,Medicine and Health Sciences ,Body Size ,Psychology ,lcsh:Science ,Musculoskeletal System ,media_common ,Multidisciplinary ,05 social sciences ,Circumference ,Illusions ,Lipids ,Eating disorders ,Chemistry ,Macromolecules ,Elastomers ,Anorexia nervosa (differential diagnoses) ,Physical Sciences ,Female ,Sensory Perception ,medicine.symptom ,Anatomy ,Physiological parameters ,Research Article ,medicine.medical_specialty ,Shoulders ,Materials by Structure ,media_common.quotation_subject ,Materials Science ,Illusion ,Anorexia ,Virtual reality ,050105 experimental psychology ,Pelvis ,03 medical and health sciences ,Young Adult ,Perception ,Mental Health and Psychiatry ,medicine ,Body Image ,Humans ,0501 psychology and cognitive sciences ,Hip ,Computers ,lcsh:R ,Biology and Life Sciences ,Anorexia nervosa ,medicine.disease ,Polymer Chemistry ,Surgery ,Case-Control Studies ,lcsh:Q ,Rubber ,030217 neurology & neurosurgery ,Neuroscience - Abstract
BACKGROUND: Patients with anorexia nervosa (AN) have a persistent distorted experience of the size of their body. Previously we found that the Rubber Hand Illusion improves hand size estimation in this group. Here we investigated whether a Full Body Illusion (FBI) affects body size estimation of body parts more emotionally salient than the hand. In the FBI, analogue to the RHI, participants experience ownership over an entire virtual body in VR after synchronous visuo-tactile stimulation of the actual and virtual body. METHODS AND RESULTS: We asked participants to estimate their body size (shoulders, abdomen, hips) before the FBI was induced, directly after induction and at ~2 hour 45 minutes follow-up. The results showed that AN patients (N = 30) decrease the overestimation of their shoulders, abdomen and hips directly after the FBI was induced. This effect was strongest for estimates of circumference, and also observed in the asynchronous control condition of the illusion. Moreover, at follow-up, the improvements in body size estimation could still be observed in the AN group. Notably, the HC group (N = 29) also showed changes in body size estimation after the FBI, but the effect showed a different pattern than that of the AN group. CONCLUSION: The results lead us to conclude that the disturbed experience of body size in AN is flexible and can be changed, even for highly emotional body parts. As such this study offers novel starting points from which new interventions for body image disturbance in AN can be developed.
- Published
- 2016