Körperbild bei Magersucht - Wahrnehmung ist nicht gestört

2018 ◽  
Vol 68 (02) ◽  
pp. 54-54
Keyword(s):  
Body Image ◽  
Virtual Reality ◽  
Anorexia Nervosa ◽  
Body Size ◽  
Size Estimation ◽  
Affektive Störung ◽  
Body Size Estimation

Mölbert SC et al. Assessing body image in anorexia nervosa using biometric self-avatars in virtual reality: Attitudinal components rather than visual body size estimation are distorted. Psychol Med 2017 Jul 26; 1–12 Ein gestörtes Körperbild ist ein Schlüsselsymptom bei Magersucht. Haben Magersüchtige eine verzerrte Wahrnehmung? Oder liegt hier eine affektive Störung vor? Eine Tübinger Arbeitsgruppe hat sich das Phänomen genauer angeschaut.

Body-Size Estimation in Anorexia Nervosa

1995 ◽  
Vol 81 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Enrico Molinari
Keyword(s):  
Body Image ◽  
Anorexia Nervosa ◽  
Body Size ◽  
The Body ◽  
Control Group ◽  
Size Estimation ◽  
Image Perception ◽  
Pelvic Area ◽  
Body Size Estimation ◽  
Different Parts

The aim was to explore the body-image perception of a group of 20 hospitalised anorexic patients, aged 18 to 21 years, undergoing a period of treatment. The instrument used was the Askevold nonverbal perception test as modified by Allamani and colleagues in 1978 to assess perception of the dimensions of different parts of the body by exploiting the capacity to project them into space. The four parts were the head, the thoracic area, the abdominal area, and the pelvic area. Analysis of responses indicated that anorexic patients overestimated the abdominal and the pelvic areas much more than the 20 members of the control group (50% vs 30%). The areas of the head and thorax were perceived almost in their real dimensions by the anorexic patients but were underestimated by the control group.

scholarly journals Assessing body image in anorexia nervosa using biometric self-avatars in virtual reality: Attitudinal components rather than visual body size estimation are distorted

2017 ◽  
Vol 48 (4) ◽  
pp. 642-653 ◽  
Author(s):  
S. C. Mölbert ◽  
A. Thaler ◽  
B. J. Mohler ◽  
S. Streuber ◽  
J. Romero ◽  
...  
Keyword(s):  
Body Image ◽  
Virtual Reality ◽  
Body Weight ◽  
Anorexia Nervosa ◽  
Three Dimensional ◽  
Normal Weight ◽  
Body Image Disturbance ◽  
Size Estimation ◽  
Eating Disorder Symptoms ◽  
Body Size Estimation

BackgroundBody image disturbance (BID) is a core symptom of anorexia nervosa (AN), but as yet distinctive features of BID are unknown. The present study aimed at disentangling perceptual and attitudinal components of BID in AN.MethodsWe investigated n = 24 women with AN and n = 24 controls. Based on a three-dimensional (3D) body scan, we created realistic virtual 3D bodies (avatars) for each participant that were varied through a range of ±20% of the participants’ weights. Avatars were presented in a virtual reality mirror scenario. Using different psychophysical tasks, participants identified and adjusted their actual and their desired body weight. To test for general perceptual biases in estimating body weight, a second experiment investigated perception of weight and shape matched avatars with another identity.ResultsWomen with AN and controls underestimated their weight, with a trend that women with AN underestimated more. The average desired body of controls had normal weight while the average desired weight of women with AN corresponded to extreme AN (DSM-5). Correlation analyses revealed that desired body weight, but not accuracy of weight estimation, was associated with eating disorder symptoms. In the second experiment, both groups estimated accurately while the most attractive body was similar to Experiment 1.ConclusionsOur results contradict the widespread assumption that patients with AN overestimate their body weight due to visual distortions. Rather, they illustrate that BID might be driven by distorted attitudes with regard to the desired body. Clinical interventions should aim at helping patients with AN to change their desired weight.

Body Image in Anorexia Nervosa: Body Size Estimation Utilising a Biological Motion Task and Eyetracking

2015 ◽  
Vol 24 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Andrea Phillipou ◽  
Susan Lee Rossell ◽  
Caroline Gurvich ◽  
David Jonathan Castle ◽  
Nikolaus Friedrich Troje ◽  
...  
Keyword(s):  
Body Image ◽  
Anorexia Nervosa ◽  
Body Size ◽  
Biological Motion ◽  
Size Estimation ◽  
Body Size Estimation

Body Image Disturbance in Anorexia Nervosa: Beyond Body Image*

1989 ◽  
Vol 34 (9) ◽  
pp. 898-905 ◽  
Author(s):  
Aïda Warah
Keyword(s):  
Body Image ◽  
Anorexia Nervosa ◽  
Body Size ◽  
Cognitive Disorder ◽  
Body Image Disturbance ◽  
Future Research ◽  
Size Estimation ◽  
Image Perception ◽  
Body Image Perception ◽  
Body Size Estimation

In this paper the literature on body image disturbance in anorexic patients is reviewed. After a decade of experimental investigation of body image in anorexia nervosa, where old and new techniques have been used and where a large number of correlations have been identified, what do we really know? The findings have been conflicting but some regularities exist. It is hypothesized that the conflicting results may be related to the presence of different subgroups among anorexics and different types of body image disturbance. Body size estimation is only one dimension of body image perception. likewise, body size overestimation is only one aspect of body image perception. Likewise, body size over-estimation is only one aspect of body image disturbance. Some, but not all anorexics, overestimate their body size, and those who do, seem to have poor prognosis. Body size overestimation is not confined to anorexics. It is not known whether it is a function of a general perceptual/cognitive disorder, but it does seem to be stable over time. The implications of the presence of other psychiatric conditions in anorexic patients are discussed and suggestions for future research and for practice are made.

scholarly journals Characterizing Body Image Distortion and Bodily Self-Plasticity in Anorexia Nervosa via Visuo-Tactile Stimulation in Virtual Reality

2019 ◽  
Vol 9 (1) ◽  
pp. 98 ◽  
Author(s):  
Luca Provenzano ◽  
Giuseppina Porciello ◽  
Sofia Ciccarone ◽  
Bigna Lenggenhager ◽  
Gaetano Tieri ◽  
...  
Keyword(s):  
Body Image ◽  
Virtual Reality ◽  
Anorexia Nervosa ◽  
Body Size ◽  
Body Dissatisfaction ◽  
Image Distortion ◽  
Future Research ◽  
Body Image Distortion ◽  
Person Perspective ◽  
Original Weight

We combined virtual reality and multisensory bodily illusion with the aim to characterize and reduce the perceptual (body overestimation) and the cognitive-emotional (body dissatisfaction) components of body image distortion (BID) in anorexia nervosa (AN). For each participant (20 anorexics, 20 healthy controls) we built personalized avatars that reproduced their own body size, shape, and verisimilar increases and losses of their original weight. Body overestimation and dissatisfaction were measured by asking participants to choose the avatar that best resembled their real and ideal body. Results show higher body dissatisfaction in AN, caused by the desire of a thinner body, and no body-size overestimation. Interpersonal multisensory stimulation (IMS) was then applied on the avatar reproducing participant’s perceived body, and on the two avatars which reproduced increases and losses of 15% of it, all presented with a first-person perspective (1PP). Embodiment was stronger after synchronous IMS in both groups, but did not reduce BID in participants with AN. Interestingly, anorexics reported more negative emotions after embodying the fattest avatar, which scaled with symptoms severity. Overall, our findings suggest that the cognitive-emotional, more than the perceptual component of BID is severely altered in AN and that perspective (1PP vs. 3PP) from which a body is evaluated may play a crucial role. Future research and clinical trials might take advantage of virtual reality to reduce the emotional distress related to body dissatisfaction.

A Psychophysiologically Controlled Exposure Treatment of Severe Body Image Distortion in Eating Disorders

1996 ◽  
Vol 24 (3) ◽  
pp. 223-233 ◽  
Author(s):  
Pau Pérez Sales ◽  
Rosa Calvo Sagardoy ◽  
Teresa Ferrer Gila
Keyword(s):  
Eating Disorders ◽  
Body Image ◽  
Body Size ◽  
Research Literature ◽  
Size Estimation ◽  
Exposure Treatment ◽  
Body Image Disorders ◽  
Controlled Exposure ◽  
Body Size Estimation ◽  
Image Problems

Although body image problems are a major prognostic factor in the course of eating disorders, its treatment has received little attention in the research literature. We present two psychophysiologically controlled cases of intensive exposure treatment with conflicting outcomes. Pre-post treatment assessments included measurements of body size estimation, body related avoidant attitudes and body dissatisfaction. In case 1, although dissatisfaction and avoidant attitudes decreased, body size overestimation remained basically unchanged. Case 2 did not improve. Psychophysiological recordings showed a covert avoidance of treatment stimuli. We discuss the pros and the cons of the treatment, and the implications for the use of exposure therapy in body image disorders.

‘Demand Characteristics' in Body-Size Estimation in Anorexia Nervosa

1986 ◽  
Vol 149 (1) ◽  
pp. 113-118 ◽  
Author(s):  
Linda Proctor ◽  
Stephen Morley
Keyword(s):  
Anorexia Nervosa ◽  
Body Size ◽  
Size Estimation ◽  
Demand Characteristics ◽  
Subsequent Trial ◽  
The Subject ◽  
Body Size Estimation ◽  
Normal Controls

We asked 24 patients with anorexia nervosa and 30 normal controls to estimate their body-size several times, each time using different instructions. The degree of over-estimation was found to vary predictably with the wording of the instructions. Informing the subject that she had made an error without specifying the direction of the error resulted in reduced over-estimation on a subsequent trial, for both anorexics and controls. ‘Internally directed’ instructions were associated with a greater degree of over-estimation than ‘external’ instructions in both groups, but particularly in anorexic subjects. Our results indicate the necessity of controlling the ‘demand characteristics' of such experiments.

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