Reference : Reduced early visual processing of own body images in anorexia nervosa: An event-rela...
Scientific congresses, symposiums and conference proceedings : Poster
Social & behavioral sciences, psychology : Neurosciences & behavior
Social & behavioral sciences, psychology : Treatment & clinical psychology
http://hdl.handle.net/10993/35243
Reduced early visual processing of own body images in anorexia nervosa: An event-related potentials study
English
Lutz, Annika mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
Herbert, Cornelia [Ulm University]
Schulz, André mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
Voderholzer, Ulrich [Schön Klinik Roseneck, Germany]
Koch, Stefan [Schön Klinik Roseneck, Germany]
Vögele, Claus mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
2016
Yes
International
22nd Annual Meeting of the Eating Disorders Research Society
from 26-10-2016 to 29-10-2016
New York City
NY
[en] eating disorders ; EEG/ERP ; P100 ; N170 ; body image ; anorexia nervosa
[en] Introduction. Although body image distortion in anorexia nervosa (AN) has been extensively studied over the past decades, its underlying mechanisms are not yet fully understood. Neuro-imaging studies have identified functional and structural alterations in brain areas involved in visual body perception, but the time course of visual body processing in AN remains mostly unexplored. The current study used event-related brain potentials (ERPs) to investigate single processing steps along the time course, particularly the visual processing of physical body image characteristics (featural processing, P1) and the recognition of a body as such (configural processing, N1).
Methods. Twenty in-patients with AN, and 20 healthy women viewed photographs of themselves, of another woman’s body and of their own and another woman’s standardized object (cup) with concurrent EEG recording.
Results. Body images elicited an accentuation of the P1 component (105-160 ms), which was absent for the comparison between own-body and own-cup images in the AN group. Results regarding the N1 component suggest alterations in object processing in AN.
Conclusions. Our results demonstrate that individuals with AN show reduced featural processing of their own body image, a process which, due to its position early in the visual processing stream, is unlikely to involve higher cognitive stimulus processing. This suggests a possible role of previously undetected pre-conscious mechanisms in body image disturbance.
Integrative Research Unit: Social and Individual Development (INSIDE) > Institute for Health and Behaviour
Fonds National de la Recherche - FnR
http://hdl.handle.net/10993/35243
FnR ; FNR1081377 > Annika Petra Christine Lutz > NEUROBODY > Neurophysiological Correlates Of Body Image Disturbances In Anorexia Nervosa. > 15/03/2011 > 14/03/2015 > 2010

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