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Self and other body perception in anorexia nervosa: The role of posterior DMN nodes
- Source :
- ResearcherID
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- Body image distortion is a core symptom of anorexia nervosa (AN), which involves alterations in self- (and other's) evaluative processes arising during body perception. At a neural level, self-related information is thought to rely on areas of the so-called default mode network (DMN), which, additionally, shows prominent synchronised activity at rest.Twenty female patients with AN and 20 matched healthy controls were scanned using magnetic resonance imaging when: (a) viewing video clips of their own body and another's body; (b) at rest. Between-group differences within the DMN during task performance were evaluated and further explored for task-related and resting-state-related functional connectivity alterations.AN patients showed a hyperactivation of the dorsal posterior cingulate cortex during their own-body processing but a response failure to another's body processing at the precuneus and ventral PCC. Increased task-related connectivity was found between dPCC-dorsal anterior cingulate cortex and precuneus-mid-temporal cortex. Further, AN patients showed decreased resting-state connectivity between the dPCC and the angular gyrus.The PCC and the precuneus are suggested as key components of a network supporting self-other-evaluative processes implicated in body distortion, while the existence of DMN alterations at rest might reflect a sustained, task-independent breakdown within this network in AN.
- Subjects :
- Adult
Anorexia Nervosa
Visual perception
Precuneus
Anorexia
Gyrus Cinguli
050105 experimental psychology
Developmental psychology
Young Adult
03 medical and health sciences
0302 clinical medicine
Body Image
Connectome
medicine
Humans
0501 psychology and cognitive sciences
Biological Psychiatry
Anterior cingulate cortex
Default mode network
Cerebral Cortex
Resting state fMRI
05 social sciences
Magnetic Resonance Imaging
Self Concept
Psychiatry and Mental health
medicine.anatomical_structure
Anorexia nervosa (differential diagnoses)
Posterior cingulate
Visual Perception
Female
Nerve Net
medicine.symptom
Psychology
Neuroscience
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 18141412 and 15622975
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- The World Journal of Biological Psychiatry
- Accession number :
- edsair.doi.dedup.....420c8ba23cfaacec7576720ef0dffdb1