Campione, GC;
Mansi, G;
Fumagalli, A;
Fumagalli, B;
Sottocornola, S;
Molteni, M;
Micali, N;
(2017)
Motor-based bodily self is selectively impaired in eating disorders.
PLoS ONE
, 12
(11)
, Article e0187342. 10.1371/journal.pone.0187342.
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Abstract
BACKGROUND: Body representation disturbances in body schema (i.e. unconscious sensorimotor body representations for action) have been frequently reported in eating disorders. Recently, it has been proposed that body schema relies on adequate functioning of the motor system, which is strongly implicated in discriminating between one’s own and someone else’s body. The present study aimed to investigate the motor-based bodily self in eating disorders and controls, in order to examine the role of the motor system in body representation disturbances at the body schema level. METHODS: Female outpatients diagnosed with eating disorders (N = 15), and healthy controls (N = 18) underwent a hand laterality task, in which their own (self-stimuli) and someone else’s hands (other-stimuli) were displayed at different orientations. Participants had to mentally rotate their own hand in order to provide a laterality judgement. Group differences in motor-based bodily self-recognition—i.e. whether a general advantage occurred when implicitly processing self- vs. other-stimuli − were evaluated, by analyzing response times and accuracy by means of mixed ANOVAs. RESULTS: Patients with eating disorders did not show a temporal advantage when mentally rotating self-stimuli compared to other-stimuli, as opposed to controls (F(1, 31) = 5.6, p = 0.02; eating disorders-other = 1092 ±256 msec, eating disorders-self = 1097±254 msec; healthy controls-other = 1239±233 msec, healthy controls -self = 1192±232 msec). CONCLUSIONS: This study provides initial indication that high-level motor functions might be compromised as part of body schema disturbances in eating disorders. Further larger investigations are required to test motor system abnormalities in the context of body schema disturbance in eating disorders.
| Type: | Article |
|---|---|
| Title: | Motor-based bodily self is selectively impaired in eating disorders |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1371/journal.pone.0187342 |
| Publisher version: | https://doi.org/10.1371/journal. pone.0187342 |
| Language: | English |
| Additional information: | © 2017 Campione et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Keywords: | Science & Technology, Multidisciplinary Sciences, Science & Technology - Other Topics, Positron-Emission-Tomography, Body-Size Estimation, Anorexia-Nervosa, Bulimia-Nervosa, Mental Representations, Neural Mechanisms, Risk-Factors, Schema, Image, Ownership |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Population, Policy and Practice Dept |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10050698 |
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