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  Characterizing impulsivity and resting-state functional connectivity in normal-weight binge eaters

Oliva, R., Morys, F., Horstmann, A., Castiello, U., & Begliomini, C. (2019). Characterizing impulsivity and resting-state functional connectivity in normal-weight binge eaters. International Journal of Eating Disorders. doi:10.1002/eat.23212.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-7083-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-9C0F-C
Genre: Journal Article

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 Creators:
Oliva, Rossella1, Author
Morys, Filip2, Author              
Horstmann, Annette3, 4, 5, Author              
Castiello, Umberto1, Author
Begliomini, Chiara1, Author
Affiliations:
1Department of General Psychology, University of Padova, Italy, ou_persistent22              
2Montreal Neurological Institute and Hospital, McGill University, Montréal, QC, Canada, ou_persistent22              
3Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany, ou_persistent22              
4Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
5Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Finland, ou_persistent22              

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Free keywords: Binge eating behavior; Functional connectivity; Functional magnetic resonance imaging; Impulsivity; Normal weight; Resting‐state
 Abstract: Objective Binge eating is characterized by episodes of uncontrolled eating, within discrete periods of time. Although it is usually described in obese individuals or as a symptom of Binge Eating Disorder (BED), this behavior can also occur in the normal‐weight (NW) population. An interesting premise suggests that impulsivity might contribute to the onset of binge eating and the progression toward weight gain. Drawing upon this evidence, here we explored impulsivity in NW individuals reporting binge‐eating episodes through a functional connectivity approach. We hypothesized that, even in the absence of an eating disorder, NW binge eaters would be characterized by connectivity pattern changes in corticostriatal regions implicated in impulsivity, similarly to the results described in BED individuals. Methods A resting‐state functional magnetic resonance imaging study tested 39 NW men and women, with and without binge eating (binge eaters, BE and non‐BE). Brain functional connectivity was explored by means of graph theoretic centrality measures and traditional seed‐based analysis; trait impulsivity was assessed with self‐report questionnaires. Results The BE group was characterized by a higher degree of trait impulsivity. Brain functional connectivity measures revealed lower degree centrality within the right middle frontal gyrus, left insula/putamen and left temporoparietal regions and a lower functional connectivity between the right middle frontal gyrus and right insula in the BE group. Discussion The results support previous evidence on BED of altered functional connectivity and higher impulsivity at the roots of overeating behavior, but further extend this concept excluding any potential confounding effect exerted by the weight status.

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Language(s): eng - English
 Dates: 2019-11-272019-06-292019-12-032019-12-23
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1002/eat.23212
Other: Epub ahead of print
PMID: 31868249
 Degree: -

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Funding organization : Italian Ministry of University and Research (MIUR)

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Title: International Journal of Eating Disorders
  Other : Int. J. Eating Disord.
Source Genre: Journal
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Publ. Info: New York, NY : Wiley
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 0276-3478
CoNE: https://pure.mpg.de/cone/journals/resource/954925505255