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Fuchs BA, Pearce AL, Rolls BJ, Wilson SJ, Rose EJ, Geier CF, Keller KL. Does 'portion size' matter? Brain responses to food and non-food cues presented in varying amounts. Appetite 2024; 196:107289. [PMID: 38423300 PMCID: PMC10948287 DOI: 10.1016/j.appet.2024.107289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/15/2024] [Accepted: 02/27/2024] [Indexed: 03/02/2024]
Abstract
Larger portions of food elicit greater intake than smaller portions of food, particularly when foods are high in energy density (kcal/g; ED). The neural mechanisms underlying this effect remain unclear. The present study used fMRI to assess brain activation to food (higher-ED, lower-ED) and non-food (office supplies) images presented in larger and smaller (i.e., age-appropriate) amounts in 61, 7-8-year-olds (29 male, 32 female) without obesity. Larger amounts of food increased activation in bilateral visual and right parahippocampal areas compared to smaller amounts; greater activation to food amount (larger > smaller) in this cluster was associated with smaller increases in food intake as portions increased. Activation to amount (larger > smaller) was stronger for food than office supplies in primary and secondary visual areas, but, for office supplies only, extended into bilateral parahippocampus, inferior parietal cortex, and additional visual areas (e.g., V7). Activation was greater for higher-vs. lower-ED food images in ventromedial prefrontal cortex for both larger and smaller amounts of food; however, this activation extended into left lateral orbital frontal cortex for smaller amounts only. Activation to food cues did not differ by familial risk for obesity. These results highlight potentially distinct neural pathways for encoding food energy content and quantity.
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Affiliation(s)
- Bari A Fuchs
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Alaina L Pearce
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Barbara J Rolls
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Stephen J Wilson
- Department of Psychology, The Pennsylvania State University, University Park, PA, USA
| | - Emma Jane Rose
- Department of Psychology, The Pennsylvania State University, University Park, PA, USA
| | - Charles F Geier
- Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Kathleen L Keller
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA; Department of Food Science, The Pennsylvania State University, University Park, PA, USA.
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2
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Jiang F, Li G, Ji W, Zhang Y, Wu F, Hu Y, Zhang W, Manza P, Tomasi D, Volkow ND, Gao X, Wang GJ, Zhang Y. Obesity is associated with decreased gray matter volume in children: a longitudinal study. Cereb Cortex 2023; 33:3674-3682. [PMID: 35989308 PMCID: PMC10068275 DOI: 10.1093/cercor/bhac300] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/15/2022] Open
Abstract
Childhood obesity has become a global health problem. Previous studies showed that childhood obesity is associated with brain structural differences relative to controls. However, few studies have been performed with longitudinal evaluations of brain structural developmental trajectories in childhood obesity. We employed voxel-based morphometry (VBM) analysis to assess gray matter (GM) volume at baseline and 2-year follow-up in 258 obese children (OB) and 265 normal weight children (NW), recruited as part of the National Institutes of Health Adolescent Brain and Cognitive Development study. Significant group × time effects on GM volume were observed in the prefrontal lobe, thalamus, right precentral gyrus, caudate, and parahippocampal gyrus/amygdala. OB compared with NW had greater reductions in GM volume in these regions over the 2-year period. Body mass index (BMI) was negatively correlated with GM volume in prefrontal lobe and with matrix reasoning ability at baseline and 2-year follow-up. In OB, Picture Test was positively correlated with GM volume in the left orbital region of the inferior frontal gyrus (OFCinf_L) at baseline and was negatively correlated with reductions in OFCinf_L volume (2-year follow-up vs. baseline). These findings indicate that childhood obesity is associated with GM volume reduction in regions involved with reward evaluation, executive function, and cognitive performance.
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Affiliation(s)
- Fukun Jiang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Guanya Li
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Weibin Ji
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Yaqi Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Feifei Wu
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Yang Hu
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Wenchao Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
| | - Peter Manza
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, United States
| | - Dardo Tomasi
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, United States
| | - Nora D Volkow
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, United States
| | - Xinbo Gao
- Chongqing Key Laboratory of Image Cognition, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
- Guangyang Bay Laboratory, Chongqing Institute for Brain and Intelligence, Chongqing 400064, China
| | - Gene-Jack Wang
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, United States
| | - Yi Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University and Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment and Xi'an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China
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3
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Celeghin A, Palermo S, Giampaolo R, Di Fini G, Gandino G, Civilotti C. Brain Correlates of Eating Disorders in Response to Food Visual Stimuli: A Systematic Narrative Review of FMRI Studies. Brain Sci 2023; 13:465. [PMID: 36979275 PMCID: PMC10046850 DOI: 10.3390/brainsci13030465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
This article summarizes the results of studies in which functional magnetic resonance imaging (fMRI) was performed to investigate the neurofunctional activations involved in processing visual stimuli from food in individuals with anorexia nervosa (AN), bulimia nervosa (BN) and binge eating disorder (BED). A systematic review approach based on the PRISMA guidelines was used. Three databases-Scopus, PubMed and Web of Science (WoS)-were searched for brain correlates of each eating disorder. From an original pool of 688 articles, 30 articles were included and discussed. The selected studies did not always overlap in terms of research design and observed outcomes, but it was possible to identify some regularities that characterized each eating disorder. As if there were two complementary regulatory strategies, AN seems to be associated with general hyperactivity in brain regions involved in top-down control and emotional areas, such as the amygdala, insula and hypothalamus. The insula and striatum are hyperactive in BN patients and likely involved in abnormalities of impulsivity and emotion regulation. Finally, the temporal cortex and striatum appear to be involved in the neural correlates of BED, linking this condition to use of dissociative strategies and addictive aspects. Although further studies are needed, this review shows that there are specific activation pathways. Therefore, it is necessary to pay special attention to triggers, targets and maintenance processes in order to plan effective therapeutic interventions. Clinical implications are discussed.
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Affiliation(s)
- Alessia Celeghin
- Department of Psychology, University of Turin, 10124 Turin, Italy
| | - Sara Palermo
- Department of Psychology, University of Turin, 10124 Turin, Italy
- Neuroradiology Unit, Department of Diagnostic and Technology, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | | | - Giulia Di Fini
- Department of Psychology, University of Turin, 10124 Turin, Italy
| | | | - Cristina Civilotti
- Department of Psychology, University of Turin, 10124 Turin, Italy
- Faculty of Educational Science, Salesian University Institute (IUSTO), 10155 Turin, Italy
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Dąbkowska-Mika A, Steiger R, Gander M, Haid-Stecher N, Fuchs M, Sevecke K, Gizewski ER. Evaluation of visual food stimuli paradigms on healthy adolescents for future use in fMRI studies in anorexia nervosa. J Eat Disord 2023; 11:35. [PMID: 36879292 PMCID: PMC9987124 DOI: 10.1186/s40337-023-00761-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/23/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Mostly, visual food stimuli paradigms for functional Magnetic Resonance Imaging are used in studies of eating disorders. However, the optimal contrasts and presentation modes are still under discussion. Therefore, we aimed to create and analyse a visual stimulation paradigm with defined contrast. METHODS In this prospective study, a block-design fMRI paradigm with conditions of randomly altering blocks of high- and low-calorie food images and images of fixation cross was established. Food pictures were rated in advance by a group of patients diagnosed with anorexia nervosa to address the dedicated perception of patients with eating disorders. To optimize the scanning procedure and fMRI contrasts we have analysed neural activity differences between high-calorie stimuli versus baseline (H vs. X), low-calorie stimuli versus baseline (L vs. X) and high- versus low-calorie stimuli (H vs. L). RESULTS By employing the developed paradigm, we were able to obtain results comparable to other studies and analysed them with different contrasts. Implementation of the contrast H versus X led to increased blood-oxygen-level-dependent signal (BOLD) mainly in unspecific areas, such as the visual cortex, the Broca´s area, bilaterally in the premotor cortex and the supplementary motor area, but also in thalami, insulae, the right dorsolateral prefrontal cortex, the left amygdala, the left putamen (p < .05). When applying the contrast L versus X, an enhancement of the BOLD signal was detected similarly within the visual area, the right temporal pole, the right precentral gyrus, Broca´s area, left insula, left hippocampus, the left parahippocampal gyrus, bilaterally premotor cortex and thalami (p < .05). Comparison of brain reactions regarding visual stimuli (high- versus low-calorie food), assumed to be more relevant in eating disorders, resulted in bilateral enhancement of the BOLD signal in primary, secondary and associative visual cortex (including fusiform gyri), as well as angular gyri (p < .05). CONCLUSIONS A carefully designed paradigm, based on the subject's characteristics, can increase the reliability of the fMRI study, and may reveal specific brain activations elicited by this custom-built stimuli. However, a putative disadvantage of implementing the contrast of high- versus low-calorie stimuli might be the omission of some interesting outcomes due to lower statistical power. Trial registration NCT02980120.
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Affiliation(s)
- Agnieszka Dąbkowska-Mika
- Department of Neuroradiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.,Neuroimaging Research Core Facility, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - Ruth Steiger
- Department of Neuroradiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria. .,Neuroimaging Research Core Facility, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.
| | - Manuela Gander
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Tirol Kliniken, Milserstrasse 10, 6060, Hall in Tirol, Austria
| | - Nina Haid-Stecher
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Tirol Kliniken, Milserstrasse 10, 6060, Hall in Tirol, Austria
| | - Martin Fuchs
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Tirol Kliniken, Milserstrasse 10, 6060, Hall in Tirol, Austria
| | - Kathrin Sevecke
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Tirol Kliniken, Milserstrasse 10, 6060, Hall in Tirol, Austria
| | - Elke Ruth Gizewski
- Department of Neuroradiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.,Neuroimaging Research Core Facility, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
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5
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Kösling C, Schäfer L, Hübner C, Sebert C, Hilbert A, Schmidt R. Food-Induced Brain Activity in Children with Overweight or Obesity versus Normal Weight: An Electroencephalographic Pilot Study. Brain Sci 2022; 12:brainsci12121653. [PMID: 36552113 PMCID: PMC9775366 DOI: 10.3390/brainsci12121653] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Although increased food cue reactivity is evidenced to be crucial to the development and maintenance of pediatric obesity, virtually nothing is known about the underlying neurophysiological aspects of food cue reactivity in children with obesity. Therefore, this study aimed at investigating neural characteristics in children with overweight or obesity using electroencephalography (EEG). METHODS Electrophysiological brain activity was measured using EEG frequency band analysis in n = 9 children with overweight or obesity versus n = 16 children with normal weight (8-13 years) during the presentation of high- and low-calorie food pictures and images of appealing non-food stimuli. RESULTS Children with overweight or obesity showed significantly increased relative central beta band activity induced by high-calorie foods and appealing non-food stimuli compared to children with normal weight. Beyond significant effects of the scalp region on EEG activity, non-significant effects of stimulus category or weight status were seen for theta and alpha frequency bands. CONCLUSIONS This study demonstrated elevated beta band activity in children with overweight or obesity when viewing high-calorie food stimuli. Beta band activity may, thus, be a valuable target for neuromodulatory interventions in children with overweight or obesity.
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6
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Reverse-translational identification of a cerebellar satiation network. Nature 2021; 600:269-273. [PMID: 34789878 DOI: 10.1038/s41586-021-04143-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 10/14/2021] [Indexed: 11/08/2022]
Abstract
The brain is the seat of body weight homeostasis. However, our inability to control the increasing prevalence of obesity highlights a need to look beyond canonical feeding pathways to broaden our understanding of body weight control1-3. Here we used a reverse-translational approach to identify and anatomically, molecularly and functionally characterize a neural ensemble that promotes satiation. Unbiased, task-based functional magnetic resonance imaging revealed marked differences in cerebellar responses to food in people with a genetic disorder characterized by insatiable appetite. Transcriptomic analyses in mice revealed molecularly and topographically -distinct neurons in the anterior deep cerebellar nuclei (aDCN) that are activated by feeding or nutrient infusion in the gut. Selective activation of aDCN neurons substantially decreased food intake by reducing meal size without compensatory changes to metabolic rate. We found that aDCN activity terminates food intake by increasing striatal dopamine levels and attenuating the phasic dopamine response to subsequent food consumption. Our study defines a conserved satiation centre that may represent a novel therapeutic target for the management of excessive eating, and underscores the utility of a 'bedside-to-bench' approach for the identification of neural circuits that influence behaviour.
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7
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Ronan L, Alexander-Bloch A, Fletcher PC. Childhood Obesity, Cortical Structure, and Executive Function in Healthy Children. Cereb Cortex 2021; 30:2519-2528. [PMID: 31646343 PMCID: PMC7175011 DOI: 10.1093/cercor/bhz257] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The development of executive function is linked to maturation of prefrontal cortex (PFC) in childhood. Childhood obesity has been associated with changes in brain structure, particularly in PFC, as well as deficits in executive functions. We aimed to determine whether differences in cortical structure mediate the relationship between executive function and childhood obesity. We analyzed MR-derived measures of cortical thickness for 2700 children between the ages of 9 and 11 years, recruited as part of the NIH Adolescent Brain and Cognitive Development (ABCD) study. We related our findings to measures of executive function and body mass index (BMI). In our analysis, increased BMI was associated with significantly reduced mean cortical thickness, as well as specific bilateral reduced cortical thickness in prefrontal cortical regions. This relationship remained after accounting for age, sex, race, parental education, household income, birth-weight, and in-scanner motion. Increased BMI was also associated with lower executive function. Reduced thickness in the rostral medial and superior frontal cortex, the inferior frontal gyrus, and the lateral orbitofrontal cortex partially accounted for reductions in executive function. These results suggest that childhood obesity is associated with compromised executive function. This relationship may be partly explained by BMI-associated reduced cortical thickness in the PFC.
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Affiliation(s)
- Lisa Ronan
- Department of Psychiatry, University of Cambridge, Cambridge CB2 8HA UK
| | - Aaron Alexander-Bloch
- Department of Child and Adolescent Psychiatry and Behavioral Science, Children's Hospital of Philadelphia, PA 19104, USA
| | - Paul C Fletcher
- Department of Psychiatry, University of Cambridge, Cambridge CB2 8HA UK.,Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge CB21 5EF, UK.,The Wellcome-MRC Institute of Metabolic Science-Metabolic Research Laboratories (IMS-MRL), University of Cambridge, Cambridge CB2 0QQ, UK
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8
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Rabini G, Ubaldi S, Fairhall SL. Combining concepts across categorical domains: a linking role of the precuneus. NEUROBIOLOGY OF LANGUAGE (CAMBRIDGE, MASS.) 2021; 2:354-371. [PMID: 34595480 PMCID: PMC7611750 DOI: 10.1162/nol_a_00039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The human capacity for semantic knowledge entails not only the representation of single concepts but the capacity to combine these concepts into the increasingly complex ideas that underlie human thought. This process involves not only the combination of concepts from within the same semantic category but frequently the conceptual combination across semantic domains. In this fMRI study (N=24) we investigate the cortical mechanisms underlying our ability to combine concepts across different semantic domains. Using five different semantic domains (People, Places, Food, Objects and Animals), we present sentences depicting concepts drawn from a single semantic domain as well as sentences that combine concepts from two of these domains. Contrasting single-category and combined-category sentences reveals that the precuneus is more active when concepts from different domains have to be combined. At the same time, we observe that distributed category selectivity representations persist when higher-order meaning involves the combination of categories and that this category-selective response is captured by the combination of the single categories composing the sentence. Collectively, these results suggest that the combination of concepts across different semantic domains is mediated by the precuneus, which functions to link together category-selective representations distributed across the cortex.
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Affiliation(s)
- Giuseppe Rabini
- Center for Mind/Brain Sciences (CIMeC), University of Trento, Italy
| | - Silvia Ubaldi
- Center for Mind/Brain Sciences (CIMeC), University of Trento, Italy
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9
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Wever MCM, van Meer F, Charbonnier L, Crabtree DR, Buosi W, Giannopoulou A, Androutsos O, Johnstone AM, Manios Y, Meek CL, Holst JJ, Smeets PAM. Associations between ghrelin and leptin and neural food cue reactivity in a fasted and sated state. Neuroimage 2021; 240:118374. [PMID: 34245869 DOI: 10.1016/j.neuroimage.2021.118374] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022] Open
Abstract
Food cue exposure can trigger eating. Food cue reactivity (FCR) is a conditioned response to food cues and includes physiological responses and activation of reward-related brain areas. FCR can be affected by hunger and weight status. The appetite-regulating hormones ghrelin and leptin play a pivotal role in homeostatic as well as hedonic eating. We examined the association between ghrelin and leptin levels and neural FCR in the fasted and sated state and the association between meal-induced changes in ghrelin and neural FCR, and in how far these associations are related to BMI and HOMA-IR. Data from 109 participants from three European centers (age 50±18 y, BMI 27±5 kg/m2) who performed a food viewing task during fMRI after an overnight fast and after a standardized meal were analyzed. Blood samples were drawn prior to the viewing task in which high-caloric, low-caloric and non-food images were shown. Fasting ghrelin was positively associated with neural FCR in the inferior and superior occipital gyrus in the fasted state. This was partly attributable to BMI and HOMA-IR. These brain regions are involved in visual attention, suggesting that individuals with higher fasting ghrelin have heightened attention to food cues. Leptin was positively associated with high calorie FCR in the medial prefrontal cortex (PFC) in the fasted state and to neural FCR in the left supramarginal gyrus in the fasted versus sated state, when correcting for BMI and HOMA-IR, respectively. This PFC region is involved in assessing anticipated reward value, suggesting that for individuals with higher leptin levels high-caloric foods are more salient than low-caloric foods, but foods in general are not more salient than non-foods. There were no associations between ghrelin and leptin and neural FCR in the sated state, nor between meal-induced changes in ghrelin and neural FCR. In conclusion, we show modest associations between ghrelin and leptin and neural FCR in a relatively large sample of European adults with a broad age and BMI range. Our findings indicate that people with higher leptin levels for their weight status and people with higher ghrelin levels may be more attracted to high caloric foods when hungry. The results of the present study form a foundation for future studies to test whether food intake and (changes in) weight status can be predicted by the association between (mainly fasting) ghrelin and leptin levels and neural FCR.
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Affiliation(s)
- Mirjam C M Wever
- Image Sciences Institute, University Medical Center Utrecht Brain Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Floor van Meer
- Image Sciences Institute, University Medical Center Utrecht Brain Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Lisette Charbonnier
- Image Sciences Institute, University Medical Center Utrecht Brain Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Daniel R Crabtree
- The Rowett Institute, University of Aberdeen, Foresterhill Road AB25 2ZD, Scotland; Division of Biomedical Sciences, Centre for Health Science, University of the Highlands and Islands, Inverness IV2 3JH, United Kingdom
| | - William Buosi
- The Rowett Institute, University of Aberdeen, Foresterhill Road AB25 2ZD, Scotland
| | - Angeliki Giannopoulou
- Department of Nutrition-Dietetics, School of Health Science & Education, Harokopio University Athens, 70 El. Venizelou avenue, 17671 Kallithea, Greece
| | - Odysseas Androutsos
- Department of Nutrition-Dietetics, School of Health Science & Education, Harokopio University Athens, 70 El. Venizelou avenue, 17671 Kallithea, Greece; Department of Nutrition and Dietetics, School of Physical Education, Sport Science and Dietetics, University of Thessaly, Trikala 42132, Greece
| | | | - Yannis Manios
- Department of Nutrition-Dietetics, School of Health Science & Education, Harokopio University Athens, 70 El. Venizelou avenue, 17671 Kallithea, Greece
| | - Claire L Meek
- Department of Clinical Biochemistry, Cambridge University Hospitals, Cambridge, United Kingdom; Institute of Metabolic Science, University of Cambridge, Cambridge Biomedical Campus, Hills Rd, Cambridge CB2 0QQ, United Kingdom
| | - Jens J Holst
- NNF Center for Basic Metabolic Research and Research Section, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Paul A M Smeets
- Image Sciences Institute, University Medical Center Utrecht Brain Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands; Division of Human Nutrition and Health, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
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10
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Mallorquí-Bagué N, Lozano-Madrid M, Vintró-Alcaraz C, Forcano L, Díaz-López A, Galera A, Fernández-Carrión R, Granero R, Jiménez-Murcia S, Corella D, Pintó X, Cuenca-Royo A, Bulló M, Salas-Salvadó J, de la Torre R, Fernández-Aranda F. Effects of a psychosocial intervention at one-year follow-up in a PREDIMED-plus sample with obesity and metabolic syndrome. Sci Rep 2021; 11:9144. [PMID: 33911087 PMCID: PMC8080657 DOI: 10.1038/s41598-021-88298-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/08/2021] [Indexed: 12/12/2022] Open
Abstract
This study examines if overweight/obesity are related to higher impulsivity, food addiction and depressive symptoms, and if these variables could be modified after 1 year of a multimodal intervention (diet, physical activity, psychosocial support). 342 adults (55-75 years) with overweight/obesity and metabolic syndrome (MetS) from the PREDIMED-Plus Cognition study were randomized to the intervention or to the control group (lifestyle recommendations). Cognitive and psychopathological assessments were performed at baseline and after 1-year follow-up. At baseline, higher impulsivity was linked to higher food addiction and depressive symptoms, but not to body mass index (BMI). Food addiction not only predicted higher BMI and depressive symptoms, but also achieved a mediational role between impulsivity and BMI/depressive symptoms. After 1 year, patients in both groups reported significant decreases in BMI, food addiction and impulsivity. BMI reduction and impulsivity improvements were higher in the intervention group. Higher BMI decrease was achieved in individuals with lower impulsivity. Higher scores in food addiction were also related to greater post-treatment impulsivity. To conclude, overweight/obesity are related to higher impulsivity, food addiction and depressive symptoms in mid/old age individuals with MetS. Our results also highlight the modifiable nature of the studied variables and the interest of promoting multimodal interventions within this population.
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Affiliation(s)
- Núria Mallorquí-Bagué
- Addictive Behaviours Unit, Department of Psychiatry, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Feixa Llarga S/N, L'Hospitalet del Llobregat, 08907, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - María Lozano-Madrid
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Feixa Llarga S/N, L'Hospitalet del Llobregat, 08907, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Cristina Vintró-Alcaraz
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Feixa Llarga S/N, L'Hospitalet del Llobregat, 08907, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Laura Forcano
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Integrative Pharmacology and Neurosciences Systems, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Dr. Aiguder 88, 08003, Barcelona, Spain
| | - Andrés Díaz-López
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Reus, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
- Serra Hunter Fellow, Universitat Rovira i Virgili (URV), Reus, Spain
| | - Ana Galera
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipids and Vascular Risk Unit, Internal Medicine, University Hospital of Bellvitge, Hospitalet de Llobregat, Barcelona, Spain
| | - Rebeca Fernández-Carrión
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Roser Granero
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Departament de Psicobiologia i Metodologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain
| | - Susana Jiménez-Murcia
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Feixa Llarga S/N, L'Hospitalet del Llobregat, 08907, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Hospitalet de Llobregat, Barcelona, Spain
| | - Dolores Corella
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Xavier Pintó
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipids and Vascular Risk Unit, Internal Medicine, University Hospital of Bellvitge, Hospitalet de Llobregat, Barcelona, Spain
| | - Aida Cuenca-Royo
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Integrative Pharmacology and Neurosciences Systems, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Dr. Aiguder 88, 08003, Barcelona, Spain
| | - Mònica Bulló
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Reus, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Jordi Salas-Salvadó
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Unitat de Nutrició Humana, Reus, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
- Nutrition Unit, University Hospital of Sant Joan de Reus, Reus, Spain
| | - Rafael de la Torre
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
- Integrative Pharmacology and Neurosciences Systems, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Dr. Aiguder 88, 08003, Barcelona, Spain.
- Departament de Ciències, Experimentals i de la Salut Universitat Pompeu Fabra (CEXS-UPF), Barcelona, Spain.
| | - Fernando Fernández-Aranda
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Feixa Llarga S/N, L'Hospitalet del Llobregat, 08907, Barcelona, Spain.
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
- Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Hospitalet de Llobregat, Barcelona, Spain.
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11
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Smith JL, Carbine KA, Larson MJ, Tucker LA, Christensen WF, LeCheminant JD, Bailey BW. To play or not to play? The relationship between active video game play and electrophysiological indices of food‐related inhibitory control in adolescents. Eur J Neurosci 2020; 53:876-894. [DOI: 10.1111/ejn.15071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/30/2020] [Accepted: 11/15/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Joshua L. Smith
- Department of Exercise Sciences Brigham Young University Provo UT USA
| | | | - Michael J. Larson
- Department of Psychology Brigham Young University Provo UT USA
- Neuroscience CenterBrigham Young University Provo UT USA
| | - Larry A. Tucker
- Department of Exercise Sciences Brigham Young University Provo UT USA
| | | | | | - Bruce W. Bailey
- Department of Exercise Sciences Brigham Young University Provo UT USA
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12
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Kim MS, Luo S, Azad A, Campbell CE, Felix K, Cabeen RP, Belcher BR, Kim R, Serrano-Gonzalez M, Herting MM. Prefrontal Cortex and Amygdala Subregion Morphology Are Associated With Obesity and Dietary Self-control in Children and Adolescents. Front Hum Neurosci 2020; 14:563415. [PMID: 33343315 PMCID: PMC7744283 DOI: 10.3389/fnhum.2020.563415] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 11/09/2020] [Indexed: 02/04/2023] Open
Abstract
A prefrontal control system that is less mature than the limbic reward system in adolescence is thought to impede self-regulatory abilities, which could contribute to poor dietary choices and obesity. We, therefore, aimed to examine whether structural morphology of the prefrontal cortex (PFC; involved in cognitive control) and the amygdala (a key brain region for reward-related processing) are associated with dietary decisions and obesity in children and adolescents. Seventy-one individuals between the ages of 8-22 years (17.35 ± 4.76 years, 51% female, 56% were overweight or obese) participated in this study; each participant completed a computer-based food choice task and a T1- and T2-weighted structural brain scans. Two indices of obesity were assessed, including age- and sex-specific body mass index (BMIz) and waist-to-height ratio (WHtR). The behavioral task included rating 60 food stimuli for tastiness, healthiness, and liking. Based on each participant's self-ratings, 100 binary food choices were then made utilizing a computer mouse. Dietary "self-control" was calculated as the proportion of trials where the individual chose the healthier food item (vs. the tastier food item) over the total number of trials. Cortical thickness and amygdala subnuclei volumes were quantified using FreeSurfer 6.0 and CIT168 atlas, respectively. We found that WHtR was negatively associated with the thickness of bilateral superior frontal, left superior temporal, right insula, and right inferior temporal regions (p < 0.05, corrected for multiple comparisons). We also found WHtR to be positively associated with the volume of the central nucleus (CEN) region of the amygdala (p = 0.006), after adjusting for the hemisphere, age, sex, and intracranial volumes. A similar data pattern was observed when BMIz was used. Moreover, we found that across all participants, thinner right superior frontal cortex and larger left CEN volumes predicted lower dietary self-control. These results suggest that differential development of the PFC and amygdala relate to obesity and dietary self-control. Further longitudinal studies are merited to determine causal relationships among altered PFC to amygdala neural circuitry, dietary self-control, and obesity.
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Affiliation(s)
- Mimi S Kim
- Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States.,Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,The Saban Research Institute at Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Shan Luo
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Psychology, University of Southern California, Los Angeles, CA, United States
| | - Anisa Azad
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Claire E Campbell
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Kimberly Felix
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Ryan P Cabeen
- Laboratory of Neuro Imaging, USC Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Britni R Belcher
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Robert Kim
- Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States.,Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Monica Serrano-Gonzalez
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Megan M Herting
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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13
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Rohlfs Domínguez P. New insights into the ontogeny of human vegetable consumption: From developmental brain and cognitive changes to behavior. Dev Cogn Neurosci 2020; 45:100830. [PMID: 32736313 PMCID: PMC7394763 DOI: 10.1016/j.dcn.2020.100830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 07/15/2020] [Accepted: 07/23/2020] [Indexed: 12/14/2022] Open
Abstract
There is research gap regarding how mental growth and brain maturation may impact on vegetable consumption. We have identified particular brain maturation and mental growth patterns that may affect child vegetable consumption. Both of these developmental patterns partially match with the Piagetian theory of development. We have identified a series of potential modulating factors. The 3–4 and 4−5 age ranges might potential sensitive periods for acquisition of brand knowledge of foods and health-related abstract concepts.
Relatively little is known about how mental development during childhood parallels brain maturation, and how these processes may have an impact on changes in eating behavior: in particular in vegetable consumption. This review aims to bridge this research gap by integrating both recent findings from the study on brain maturation with recent results from research on cognitive development. Developmental human neuroscientific research in the field of the sensory systems and on the relationship between children’s cognitive development and vegetable consumption serve as benchmarks. We have identified brain maturation and mental growth patterns that may affect child vegetable consumption and conclude that both of these developmental patterns partially match with the Piagetian theory of development. Additionally, we conclude that a series of potential modulating factors, such as learning-related experiences, may lead to fluctuations in the course of those particular developmental patterns, and thus vegetable consumption patterns. Therefore, we propose a theoretical predictive model of child vegetable consumption in which the nature of the relationship between its correlational and/or causal components should be studied in the future by adopting an integral research perspective of the three targeted study levels: brain, cognition and behavior.
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Affiliation(s)
- Paloma Rohlfs Domínguez
- Department of Psychology and Anthropology, University of Extremadura, Faculty of Nursing and Occupational Therapy and Faculty of Teaching Training, Avenida de la Universidad, s/n 10004, Cáceres Spain.
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14
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Sato W, Minemoto K, Sawada R, Miyazaki Y, Fushiki T. Image database of Japanese food samples with nutrition information. PeerJ 2020; 8:e9206. [PMID: 32596038 PMCID: PMC7305770 DOI: 10.7717/peerj.9206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/27/2020] [Indexed: 11/20/2022] Open
Abstract
Background Visual processing of food plays an important role in controlling eating behaviors. Several studies have developed image databases of food to investigate visual food processing. However, few databases include non-Western foods and objective nutrition information on the foods. Methods We developed an image database of Japanese food samples that has detailed nutrition information, including calorie, carbohydrate, fat and protein contents. To validate the database, we presented the images, together with Western food images selected from an existing database and had Japanese participants rate their affective (valence, arousal, liking and wanting) and cognitive (naturalness, recognizability and familiarity) appraisals and estimates of nutrition. Results The results showed that all affective and cognitive appraisals (except arousal) of the Japanese food images were higher than those of Western food. Correlational analyses found positive associations between the objective nutrition information and subjective estimates of the nutrition information, and between the objective calorie/fat content and affective appraisals. Conclusions These data suggest that by using our image database, researchers can investigate the visual processing of Japanese food and the relationships between objective nutrition information and the psychological/neural processing of food.
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15
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Szabo‐Reed AN, Martin LE, Hu J, Yeh H, Powell J, Lepping RJ, Patrician TM, Breslin FJ, Donnelly JE, Savage CR. Modeling interactions between brain function, diet adherence behaviors, and weight loss success. Obes Sci Pract 2020; 6:282-292. [PMID: 32523717 PMCID: PMC7278911 DOI: 10.1002/osp4.403] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION Obesity is linked to altered activation in reward and control brain circuitry; however, the associated brain activity related to successful or unsuccessful weight loss (WL) is unclear. METHODS Adults with obesity (N = 75) completed a baseline functional magnetic resonance imaging (fMRI) scan before entering a WL intervention (ie,3-month diet and physical activity [PA] program). We conducted an exploratory analysis to identify the contributions of baseline brain activation, adherence behavior patterns, and the associated connections to WL at the conclusion of a 3-month WL intervention. Food cue-reactivity brain regions were functionally identified using fMRI to index brain activation to food vs nonfood cues. Food consumption, PA, and class attendance were collected weekly during the 3-month intervention. RESULTS The left middle frontal gyrus (L-MFG, BA 46) and right middle frontal gyrus (R-MFG; BA 9) were positively activated when viewing food compared with nonfood images. Structural equation modeling with bootstrapping was used to investigate a hypothesized path model and revealed the following significant paths: (1) attendance to 3-month WL, (2) R-MFG to attendance, and (3) indirect effects of R-MFG through attendance on WL. CONCLUSION Findings suggest that brain activation to appetitive food cues predicts future WL through mediating session attendance, diet, and PA. This study contributes to the growing evidence of the importance of food cue reactivity and self-regulation brain regions and their impact on WL outcomes.
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Affiliation(s)
- Amanda N. Szabo‐Reed
- Department of Internal MedicineUniversity of Kansas Medical CenterKansas CityKansas
| | - Laura E. Martin
- Department of Population Health HealthUniversity of Kansas Medical CenterKansas CityKansas
- Hoglund Brain Imaging CenterUniversity of Kansas Medical CenterKansas CityKansas
| | - Jinxiang Hu
- Department of BiostatisticsUniversity of Kansas Medical CenterKansas CityKansas
| | - Hung‐Wen Yeh
- Department of BiostatisticsUniversity of Kansas Medical CenterKansas CityKansas
| | - Joshua Powell
- Graduate School of Social WorkUniversity of DenverDenverColorado
| | - Rebecca J. Lepping
- Hoglund Brain Imaging CenterUniversity of Kansas Medical CenterKansas CityKansas
| | - Trisha M. Patrician
- Department of BiostatisticsUniversity of Kansas Medical CenterKansas CityKansas
| | - Florance J. Breslin
- Center for Brain, Biology and BehaviorUniversity of Nebraska‐LincolnLincolnNebraska
| | - Joseph E. Donnelly
- Department of Internal MedicineUniversity of Kansas Medical CenterKansas CityKansas
| | - Cary R. Savage
- Department of BiostatisticsUniversity of Kansas Medical CenterKansas CityKansas
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16
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Amygdala activation during unconscious visual processing of food. Sci Rep 2019; 9:7277. [PMID: 31086241 PMCID: PMC6513994 DOI: 10.1038/s41598-019-43733-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 04/29/2019] [Indexed: 11/20/2022] Open
Abstract
Hedonic or emotional responses to food have important positive and negative effects on human life. Behavioral studies have shown that hedonic responses to food images are elicited rapidly, even in the absence of conscious awareness of food. Although a number of previous neuroimaging studies investigated neural activity during conscious processing of food images, the neural mechanisms underlying unconscious food processing remain unknown. To investigate this issue, we measured neural activity using functional magnetic resonance imaging while participants viewed food and mosaic images presented subliminally and supraliminally. Conjunction analyses revealed that the bilateral amygdala was more strongly activated in response to food images than to mosaic images under both subliminal and supraliminal conditions. Interaction analyses revealed that the broad bilateral posterior regions, peaking at the posterior fusiform gyrus, were particularly active when participants viewed food versus mosaic images under the supraliminal compared with the subliminal condition. Dynamic causal modeling analyses supported the model in which the subcortical visual pathway from the pulvinar to the amygdala was modulated by food under the subliminal condition; in contrast, the model in which both subcortical and cortical (connecting the primary visual cortex, fusiform gyrus, and the amygdala) visual pathways were modulated by food received the most support under the supraliminal condition. These results suggest the possibility that unconscious hedonic responses to food may exert an effect through amygdala activation via the subcortical visual pathway.
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17
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English LK, Masterson TD, Fearnbach SN, Tanofsky-Kraff M, Fisher J, Wilson SJ, Rolls BJ, Keller KL. Increased brain and behavioural susceptibility to portion size in children with loss of control eating. Pediatr Obes 2019; 14:e12436. [PMID: 30019382 PMCID: PMC7086471 DOI: 10.1111/ijpo.12436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 04/26/2018] [Accepted: 05/21/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Portion size influences intake (i.e. the portion size effect [PSE]), yet determinants of susceptibility to the PSE are unclear. OBJECTIVE We tested whether children who reported an episode of loss of control (LOC) eating over the last 3 months would be more susceptible to the PSE and would show differential brain responses to food cues compared with children with no-LOC. METHODS Across five sessions, children (n = 47; 7-10 years) consumed four test meals at 100%, 133%, 167% and 200% conditions for portion size and completed a functional magnetic resonance imaging scan while viewing pictures of foods varied by portion size and energy density (ED). Incidence of LOC over the past 3 months was self-reported. Random coefficient models were tested for differences in the shape of the PSE curve by LOC status. A whole-brain analysis was conducted to determine response to food cues during the functional magnetic resonance imaging. RESULTS Reported LOC (n = 13) compared with no-LOC (n = 34) was associated with increased susceptibility to the PSE, as evidenced by a positive association with the linear slope (P < 0.005), and negative association with the quadratic slope (P < 0.05) of the intake curve. Children who reported LOC compared with no-LOC showed increased activation in the left cerebellum to small relative to large portions (P < 0.01) and right cerebellum to High-ED relative to Low-ED food cues (P < 0.01). CONCLUSION Children who reported LOC were more susceptible to the PSE and showed alterations in food-cue processing in the cerebellum, a hindbrain region implicated in satiety signalling.
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Affiliation(s)
- L. K. English
- Department of Nutritional Science, The Pennsylvania State University, State College, PA, USA
| | - T. D. Masterson
- Department of Nutritional Science, The Pennsylvania State University, State College, PA, USA
| | - S. N. Fearnbach
- Brain and Metabolism Imaging in Chronic Disease, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - M. Tanofsky-Kraff
- Department of Medical and Clinical Psychology, Uniformed Services University of Health Sciences, Bethesda, MD, USA
| | - J. Fisher
- Department of Social and Behavioral Sciences, Temple University, Philadelphia, PA, USA
| | - S. J. Wilson
- Department of Psychology, The Pennsylvania State University, State College, PA, USA
| | - B. J. Rolls
- Department of Nutritional Science, The Pennsylvania State University, State College, PA, USA
| | - K. L. Keller
- Department of Nutritional Science, The Pennsylvania State University, State College, PA, USA,Department of Food Science, The Pennsylvania State University, State College, PA, USA
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18
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Zhang P, Liu Y, Lv H, Li MY, Yu FX, Wang Z, Ding HY, Wang LX, Zhao KX, Zhang ZY, Zhao PF, Li J, Yang ZH, Zhang ZT, Wang ZC. Integration of Neural Reward Processing and Appetite-Related Signaling in Obese Females: Evidence From Resting-State fMRI. J Magn Reson Imaging 2019; 50:541-551. [PMID: 30653786 DOI: 10.1002/jmri.26576] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/25/2018] [Accepted: 10/27/2018] [Indexed: 12/19/2022] Open
Affiliation(s)
- Peng Zhang
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Yang Liu
- Department of General Surgery; Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases; Beijing China
| | - Han Lv
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Meng-yi Li
- Department of General Surgery; Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases; Beijing China
| | - Feng-xia Yu
- Medical Imaging Center; Beijing Tongren Hospital, Capital Medical University; Beijing China
| | - Zheng Wang
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - He-yu Ding
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Li-xue Wang
- Department of General Surgery; Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases; Beijing China
| | - Kai-xin Zhao
- Department of General Surgery; Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases; Beijing China
| | - Zheng-yu Zhang
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Peng-fei Zhao
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Jing Li
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Zheng-han Yang
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
| | - Zhong-tao Zhang
- Department of General Surgery; Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases; Beijing China
| | - Zhen-chang Wang
- Department of Radiology; Beijing Friendship Hospital, Capital Medical University; Beijing China
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Fletcher PC, Kenny PJ. Food addiction: a valid concept? Neuropsychopharmacology 2018; 43:2506-2513. [PMID: 30188514 PMCID: PMC6224546 DOI: 10.1038/s41386-018-0203-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/12/2018] [Accepted: 08/15/2018] [Indexed: 12/24/2022]
Abstract
Can food be addictive? What does it mean to be a food addict? Do common underlying neurobiological mechanisms contribute to drug and food addiction? These vexing questions have been the subject of considerable interest and debate in recent years, driven in large part by the major health concerns associated with dramatically increasing body weights and rates of obesity in the United States, Europe, and other regions with developed economies. No clear consensus has yet emerged on the validity of the concept of food addiction and whether some individuals who struggle to control their food intake can be considered food addicts. Some, including Fletcher, have argued that the concept of food addiction is unsupported, as many of the defining features of drug addiction are not seen in the context of feeding behaviors. Others, Kenny included, have argued that food and drug addiction share similar features that may reflect common underlying neural mechanisms. Here, Fletcher and Kenny argue the merits of these opposing positions on the concept of food addiction.
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Affiliation(s)
- Paul C Fletcher
- Department of Psychiatry, University of Cambridge, Cambridge, CB2 8AH, UK.
- Cambridgeshire and Peterborough NHS Foundation Trust, Cambrdge, CB21 5EF, UK.
| | - Paul J Kenny
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
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20
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Giuliani NR, Merchant JS, Cosme D, Berkman ET. Neural predictors of eating behavior and dietary change. Ann N Y Acad Sci 2018; 1428:208-220. [PMID: 29543993 PMCID: PMC6139096 DOI: 10.1111/nyas.13637] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/11/2018] [Accepted: 01/16/2018] [Indexed: 01/10/2023]
Abstract
Recently, there has been an increase in the number of human neuroimaging studies seeking to predict behavior above and beyond traditional measurements such as self-report. This trend has been particularly notable in the area of food consumption, as the percentage of people categorized as overweight or obese continues to rise. In this review, we argue that there is considerable utility in this form of health neuroscience, modeling the neural bases of eating behavior and dietary change in healthy community populations. Further, we propose a model and accompanying evidence indicating that several basic processes underlying eating behavior, particularly reactivity, regulation, and valuation, can be predictive of behavior change. We also discuss future directions for this work.
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Affiliation(s)
- Nicole R. Giuliani
- Department of Special Education and Clinical Sciences, University of Oregon
- Center for Translational Neuroscience, University of Oregon
| | | | - Danielle Cosme
- Center for Translational Neuroscience, University of Oregon
- Department of Psychology, University of Oregon
| | - Elliot T. Berkman
- Center for Translational Neuroscience, University of Oregon
- Department of Psychology, University of Oregon
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Adamson K, Troiani V. Distinct and overlapping fusiform activation to faces and food. Neuroimage 2018; 174:393-406. [DOI: 10.1016/j.neuroimage.2018.02.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 11/29/2022] Open
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Adise S, Geier CF, Roberts NJ, White CN, Keller KL. Is brain response to food rewards related to overeating? A test of the reward surfeit model of overeating in children. Appetite 2018; 128:167-179. [PMID: 29890186 DOI: 10.1016/j.appet.2018.06.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/15/2018] [Accepted: 06/07/2018] [Indexed: 01/18/2023]
Abstract
The reward surfeit model of overeating suggests that heightened brain response to rewards contributes to overeating and subsequent weight gain. However, previous studies have not tested whether brain response to reward is associated with food intake, particularly during childhood, a period of dynamic development in reward and inhibitory control neurocircuitry. We conducted functional magnetic resonance imaging (fMRI) with 7-11-year-old children (n = 59; healthy weight, n = 31; overweight, n = 28; 54% female) while they played a modified card-guessing paradigm to examine blood-oxygen-level-dependent (BOLD) response to anticipating and winning rewards (food, money, neutral). Food intake was assessed at three separate meals that measured different facets of eating behavior: 1) typical consumption (baseline), 2) overindulgence (palatable buffet), and 3) eating in the absence of hunger (EAH). A priori regions of interest included regions implicated in both reward processing and inhibitory control. Multiple stepwise regressions were conducted to examine the relationship between intake and BOLD response to rewards. Corrected results showed that a greater BOLD response in the medial prefrontal cortex for anticipating food compared to money positively correlated with how much children ate at the baseline and palatable buffet meals. BOLD response in the dorsolateral prefrontal cortex for winning food compared to money was positively correlated with intake at the palatable buffet meal and EAH. All aforementioned relationships were independent of child weight status. Findings support the reward surfeit model by showing that increased brain response to food compared to money rewards positively correlates with laboratory measures of food intake in children.
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Affiliation(s)
- Shana Adise
- Department of Nutritional Sciences, The Pennsylvania State University, 110 Chandlee Laboratory, University Park, PA, 16802, USA
| | - Charles F Geier
- Department of Human Development and Family Studies, The Pennsylvania State University, 119 Health and Human Development Bldg, University Park, PA, 16802, USA
| | - Nicole J Roberts
- Department of Human Development and Family Studies, The Pennsylvania State University, 119 Health and Human Development Bldg, University Park, PA, 16802, USA
| | - Corey N White
- Department of Psychology, Missouri Western State University, Murphy Hall 217, St. Joseph, MO, 64507, USA
| | - Kathleen L Keller
- Department of Nutritional Sciences, The Pennsylvania State University, 110 Chandlee Laboratory, University Park, PA, 16802, USA; Department of Food Science, The Pennsylvania State University, 202 Rodney A. Erickson Food Science Building, University Park, PA, 16802, USA.
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Neural processing of food and emotional stimuli in adolescent and adult anorexia nervosa patients. PLoS One 2018; 13:e0191059. [PMID: 29579064 PMCID: PMC5868769 DOI: 10.1371/journal.pone.0191059] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/26/2017] [Indexed: 02/07/2023] Open
Abstract
Background A constant preoccupation with food and restrictive eating are main symptoms of anorexia nervosa (AN). Imaging studies revealed aberrant neural activation patterns in brain regions processing hedonic and reward reactions as well as–potentially aversive–emotions. An imbalance between so called “bottom-up” and “top-down” control areas is discussed. The present study is focusing on neural processing of disease-specific food stimuli and emotional stimuli and its developmental course in adolescent and adult AN patients and could offer new insight into differential mechanisms underlying shorter or more chronic disease. Methods 33 adolescents aged 12–18 years (15 AN patients, 18 control participants) and 32 adult women (16 AN patients, 16 control participants) underwent functional magnetic resonance imaging (fMRI, 3T high-field scanner) while watching pictures of high and low-calorie food and affective stimuli. Afterwards, they rated subjective valence of each picture. FMRI data analysis was performed using a region of interest based approach. Results Pictures of high-calorie food items were rated more negatively by AN patients. Differences in activation between patients and controls were found in “bottom up” and “top down” control areas for food stimuli and in several emotion processing regions for affective stimuli which were more pronounced in adolescents than in adults. Conclusion A differential pattern was seen for food stimuli compared to generally emotion eliciting stimuli. Adolescents with AN show reduced processing of affective stimuli and enhanced activation of regions involved in “bottom up” reward processing and “top down” control as well as the insula with regard to food stimuli with a focus on brain regions which underlie changes during adolescent development. In adults less clear and less specific activation differences were present, pointing towards a high impact that regions undergoing maturation might have on AN symptoms.
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Almiron-Roig E, Navas-Carretero S, Emery P, Martínez JA. Research into food portion size: methodological aspects and applications. Food Funct 2018; 9:715-739. [PMID: 29219156 DOI: 10.1039/c7fo01430a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Portion sizes for certain foods have been increasing dramatically in recent years alongside obesity rates, concurring with the phenomenon of the portion size effect (more is consumed when more is offered). Portion size may be defined based on different purposes such as for dietary assessment, or therapeutic advice or food labelling, resulting in a variety of measurement methods and specifications. This situation has resulted in disagreements on establishing portion size recommendations by manufacturers, food distributors, restaurants, health professionals and policy makers, contributing to confusion amongst consumers on the amounts of food to be consumed, and potentially increasing the likelihood of overeating and other obesity-related behaviours. Such variability is also reflected in the research field making comparison across studies on portion size difficult. The aim of this review is to provide an overview of definitions and methods used in research to evaluate portion-size related outcomes, including methods to estimate amounts consumed by individuals as part of dietary assessment; methods to analyse cognitive mechanisms related to portion size behaviour; and methods to evaluate the impact of portion size manipulations as well as individual plus environmental factors on portion size behaviour. Special attention has been paid to behavioural studies exploring portion size cognitive processes given the lack of previous methodological reviews in this area. This information may help researchers, clinicians and other stakeholders to establish clearer definitions of portion size in their respective areas of work and to standardise methods to analyse portion size effects.
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Affiliation(s)
- Eva Almiron-Roig
- Universidad de Navarra, Centre for Nutrition Research, Irunlarrea 1, 31008, Pamplona, Spain.
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25
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Avery JA, Powell JN, Breslin FJ, Lepping RJ, Martin LE, Patrician TM, Donnelly JE, Savage CR, Simmons WK. Obesity is associated with altered mid-insula functional connectivity to limbic regions underlying appetitive responses to foods. J Psychopharmacol 2017; 31:1475-1484. [PMID: 28944718 PMCID: PMC6527420 DOI: 10.1177/0269881117728429] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Obesity is fundamentally a disorder of energy balance. In obese individuals, more energy is consumed than is expended, leading to excessive weight gain through the accumulation of adipose tissue. Complications arising from obesity, including cardiovascular disease, elevated peripheral inflammation, and the development of Type II diabetes, make obesity one of the leading preventable causes of morbidity and mortality. Thus, it is of paramount importance to both individual and public health that we understand the neural circuitry underlying the behavioral regulation of energy balance. To this end, we sought to examine obesity-related differences in the resting state functional connectivity of the dorsal mid-insula, a region of gustatory and interoceptive cortex associated with homeostatically sensitive responses to food stimuli. Within the present study, obese and healthy weight individuals completed resting fMRI scans during varying interoceptive states, both while fasting and after a standardized meal. We examined group differences in the pre- versus post-meal functional connectivity of the mid-insula, and how those differences were related to differences in self-reported hunger ratings and ratings of meal pleasantness. Obese and healthy weight individuals exhibited opposing patterns of eating-related functional connectivity between the dorsal mid-insula and multiple brain regions involved in reward, valuation, and satiety, including the medial orbitofrontal cortex, the dorsal striatum, and the ventral striatum. In particular, healthy weight participants exhibited a significant positive relationship between changes in hunger and changes in medial orbitofrontal functional connectivity, while obese participants exhibited a complementary negative relationship between hunger and ventral striatum connectivity to the mid-insula. These obesity-related alterations in dorsal mid-insula functional connectivity patterns may signify a fundamental difference in the experience of food motivation in obese individuals, wherein approach behavior toward food is guided more by reward-seeking than by homeostatically relevant interoceptive information from the body.
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Affiliation(s)
| | - Joshua N. Powell
- Laureate Institute for Brain Research, Tulsa, OK,Center for Health Behavior Neuroscience, University of Kansas Medical Center, Kansas City, KS,Graduate School of Social Work, University of Denver, Denver, CO
| | - Florence J. Breslin
- Laureate Institute for Brain Research, Tulsa, OK,Center for Health Behavior Neuroscience, University of Kansas Medical Center, Kansas City, KS
| | - Rebecca J. Lepping
- Hoglund Brain Imaging Center, University of Kansas Medical Center, Kansas City, KS
| | - Laura E. Martin
- Hoglund Brain Imaging Center, University of Kansas Medical Center, Kansas City, KS
| | | | - Joseph E. Donnelly
- Center for Physical Activity and Weight Management, University of Kansas Medical Center, Kansas City, KS
| | - Cary R. Savage
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, Kansas City, KS,Center for Physical Activity and Weight Management, University of Kansas Medical Center, Kansas City, KS
| | - W. Kyle Simmons
- Laureate Institute for Brain Research, Tulsa, OK,Banner Alzheimer’s Institute, Phoenix, AZ
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Abstract
OBJECTIVE The aim of the study was to determine how visceral sensations affect responses to food stimuli in anorexia nervosa (AN). METHODS Twenty weight-restored, unmedicated adolescent and young adult women with AN and twenty healthy control participants completed an interoceptive attention task during which they focused on sensations from the heart, stomach, and bladder and made ratings of these sensations. They then underwent functional magnetic resonance imaging scanning while viewing pictures of food and nonfood objects. Between-groups t tests were employed to investigate group differences in the relationship between interoceptive sensation ratings and brain hemodynamic response to food pictures and, specifically, to highly palatable foods. RESULTS In response to food pictures, AN participants exhibited a positive relationship between stomach sensation ratings and posterior insula activation (peak t = 4.30). AN participants displayed negative relationships between stomach sensation ratings and amygdala activation (peak t = -4.05) and heart sensation ratings and ventromedial prefrontal cortex activation (peak t = -3.52). In response to highly palatable foods, AN was associated with positive relationships between stomach sensation ratings and activity in the subgenual anterior cingulate (peak t = 3.88) and amygdala (peak t = 4.83), and negative relationships in the ventral pallidum (peak t = -3.99) and ventral tegmental area (peak t = -4.03). AN participants also exhibited negative relationships between cardiac sensations and activation in response to highly palatable foods in the putamen (peak t = -3.41) and ventromedial prefrontal cortex (peak t = -3.61). Healthy participants exhibited the opposite pattern in all of these regions. CONCLUSIONS Hedonic and interoceptive inferences made by individuals with AN at the sight of food may be influenced by atypical visceral interoceptive experience, which could contribute to restrictive eating.
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27
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Neuroimaging biomarkers to associate obesity and negative emotions. Sci Rep 2017; 7:7664. [PMID: 28794427 PMCID: PMC5550465 DOI: 10.1038/s41598-017-08272-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/06/2017] [Indexed: 01/01/2023] Open
Abstract
Obesity is a serious medical condition highly associated with health problems such as diabetes, hypertension, and stroke. Obesity is highly associated with negative emotional states, but the relationship between obesity and emotional states in terms of neuroimaging has not been fully explored. We obtained 196 emotion task functional magnetic resonance imaging (t-fMRI) from the Human Connectome Project database using a sampling scheme similar to a bootstrapping approach. Brain regions were specified by automated anatomical labeling atlas and the brain activity (z-statistics) of each brain region was correlated with body mass index (BMI) values. Regions with significant correlation were identified and the brain activity of the identified regions was correlated with emotion-related clinical scores. Hippocampus, amygdala, and inferior temporal gyrus consistently showed significant correlation between brain activity and BMI and only the brain activity in amygdala consistently showed significant negative correlation with fear-affect score. The brain activity in amygdala derived from t-fMRI might be good neuroimaging biomarker for explaining the relationship between obesity and a negative emotional state.
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Varley-Campbell JL, Fulford J, Moore MS, Williams CA. Adolescent brain activation: dependence on sex, dietary satiation, and restraint. Nutr Neurosci 2017; 21:439-446. [DOI: 10.1080/1028415x.2017.1306009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Joanna L. Varley-Campbell
- Children's Health and Exercise Research Centre, Sport and Health Sciences, St Luke's Campus, University of Exeter, Heavitree Road, EX1 2LU, UK
| | - Jonathan Fulford
- Exeter NIHR Clinical Research Facility, University of Exeter Medical School, University of Exeter, EX1 2LU, UK
| | - Melanie S. Moore
- School of Health Professions, Plymouth University, Devon, PL6 8BH, UK
| | - Craig A. Williams
- Children's Health and Exercise Research Centre, Sport and Health Sciences, St Luke's Campus, University of Exeter, Heavitree Road, EX1 2LU, UK
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Chen S, Dong D, Jackson T, Zhuang Q, Chen H. Trait-based food-cravings are encoded by regional homogeneity in the parahippocampal gyrus. Appetite 2017; 114:155-160. [PMID: 28344152 DOI: 10.1016/j.appet.2017.03.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 02/08/2017] [Accepted: 03/22/2017] [Indexed: 12/19/2022]
Abstract
Food cravings can reflect an intense trait-like emotional-motivational desire to eat palatable food, often resulting in the failure of weight loss efforts. Studies have linked trait-based food-cravings to increased risk of overeating. However, little is known about resting-state neural mechanisms that underlie food cravings. We investigated this issue using resting-state functional magnetic resonance imaging (fMRI) to test the extent to which spontaneous neural activity occurs in regions implicated in emotional memory and reward motivation associated with food cravings. Spontaneous regional activity patterns correlating to food cravings were assessed among 65 young healthy women using regional homogeneity analysis to assess temporal synchronization of spontaneous activity. Analyses indicated that women with higher scores on the Food Cravings Questionnaire displayed increased local functional homogeneity in brain regions involved in emotional memory and visual attention processing (i.e., parahippocampal gyrus and fusiform gyrus) but not reward. In view of parahippocampal gyrus involvement in hedonic learning and incentive memory encoding, this study suggests that trait-based food cravings are encoded by emotional memory circuits.
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Affiliation(s)
- Shuaiyu Chen
- Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China; School of Psychology, Southwest University, Chongqing 400715, China.
| | - Debo Dong
- Center for Information in Medicine, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.
| | - Todd Jackson
- Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China; Department of Psychology, University of Macau, Macau, 999078, China.
| | - Qian Zhuang
- Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China; School of Psychology, Southwest University, Chongqing 400715, China.
| | - Hong Chen
- Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China; School of Psychology, Southwest University, Chongqing 400715, China.
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30
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Pohl TM, Tempelmann C, Noesselt T. How task demands shape brain responses to visual food cues. Hum Brain Mapp 2017; 38:2897-2912. [PMID: 28294458 DOI: 10.1002/hbm.23560] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 02/10/2017] [Accepted: 02/27/2017] [Indexed: 11/09/2022] Open
Abstract
Several previous imaging studies have aimed at identifying the neural basis of visual food cue processing in humans. However, there is little consistency of the functional magnetic resonance imaging (fMRI) results across studies. Here, we tested the hypothesis that this variability across studies might - at least in part - be caused by the different tasks employed. In particular, we assessed directly the influence of task set on brain responses to food stimuli with fMRI using two tasks (colour vs. edibility judgement, between-subjects design). When participants judged colour, the left insula, the left inferior parietal lobule, occipital areas, the left orbitofrontal cortex and other frontal areas expressed enhanced fMRI responses to food relative to non-food pictures. However, when judging edibility, enhanced fMRI responses to food pictures were observed in the superior and middle frontal gyrus and in medial frontal areas including the pregenual anterior cingulate cortex and ventromedial prefrontal cortex. This pattern of results indicates that task sets can significantly alter the neural underpinnings of food cue processing. We propose that judging low-level visual stimulus characteristics - such as colour - triggers stimulus-related representations in the visual and even in gustatory cortex (insula), whereas discriminating abstract stimulus categories activates higher order representations in both the anterior cingulate and prefrontal cortex. Hum Brain Mapp 38:2897-2912, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Tanja Maria Pohl
- Department of Biological Psychology, Faculty of Natural Sciences, Otto-von-Guericke-University Magdeburg, Magdeburg, 39106, Germany
| | - Claus Tempelmann
- Department of Neurology, Medical Faculty, Otto-von-Guericke-University Magdeburg, Magdeburg, 39120, Germany
| | - Toemme Noesselt
- Department of Biological Psychology, Faculty of Natural Sciences, Otto-von-Guericke-University Magdeburg, Magdeburg, 39106, Germany.,Center for Behavioral Brain Sciences, Otto-von-Guericke-University Magdeburg, Magdeburg, 39106, Germany
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31
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ÁLVAREZ-SANTACRUZ C, López-robles M, HELLÍN-MESSEGUER D. Experiencia con Video Head Impulse Testing (vHIT). REVISTA ORL 2017. [DOI: 10.14201/orl201781.14992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Cerolini S, Pazzaglia M, Lombardo C. Commentary: Gain in Body Fat Is Associated with Increased Striatal Response to Palatable Food Cues, whereas Body Fat Stability Is Associated with Decreased Striatal Response. Front Hum Neurosci 2017; 11:65. [PMID: 28261077 PMCID: PMC5306287 DOI: 10.3389/fnhum.2017.00065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 01/31/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Silvia Cerolini
- Department of Psychology, La Sapienza University of RomeRome, Italy
- *Correspondence: Silvia Cerolini
| | - Mariella Pazzaglia
- Department of Psychology, La Sapienza University of RomeRome, Italy
- IRCCS Santa Lucia FoundationRome, Italy
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English LK, Fearnbach SN, Wilson SJ, Fisher JO, Savage JS, Rolls BJ, Keller KL. Food portion size and energy density evoke different patterns of brain activation in children. Am J Clin Nutr 2017; 105:295-305. [PMID: 27881393 PMCID: PMC5267299 DOI: 10.3945/ajcn.116.136903] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 10/27/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Large portions of food promote intake, but the mechanisms that drive this effect are unclear. Previous neuroimaging studies have identified the brain-reward and decision-making systems that are involved in the response to the energy density (ED) (kilocalories per gram) of foods, but few studies have examined the brain response to the food portion size (PS). OBJECTIVE We used functional MRI (fMRI) to determine the brain response to food images that differed in PSs (large and small) and ED (high and low). DESIGN Block-design fMRI was used to assess the blood oxygen level-dependent (BOLD) response to images in 36 children (7-10 y old; girls: 50%), which was tested after a 2-h fast. Pre-fMRI fullness and liking were rated on visual analog scales. A whole-brain cluster-corrected analysis was used to compare BOLD activation for main effects of the PS, ED, and their interaction. Secondary analyses were used to associate BOLD contrast values with appetitive traits and laboratory intake from meals for which the portions of all foods were increased. RESULTS Compared with small-PS cues, large-PS cues were associated with decreased activation in the inferior frontal gyrus (P < 0.01). Compared with low-ED cues, high-ED cues were associated with increased activation in multiple regions (e.g., in the caudate, cingulate, and precentral gyrus) and decreased activation in the insula and superior temporal gyrus (P < 0.01 for all). A PS × ED interaction was shown in the superior temporal gyrus (P < 0.01). BOLD contrast values for high-ED cues compared with low-ED cues in the insula, declive, and precentral gyrus were negatively related to appetitive traits (P < 0.05). There were no associations between the brain response to the PS and either appetitive traits or intake. CONCLUSIONS Cues regarding food PS may be processed in the lateral prefrontal cortex, which is a region that is implicated in cognitive control, whereas ED activates multiple areas involved in sensory and reward processing. Possible implications include the development of interventions that target decision-making and reward systems differently to moderate overeating.
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Affiliation(s)
| | | | | | - Jennifer O Fisher
- Department of Social and Behavioral Sciences, Temple University, Philadelphia, PA
| | | | | | - Kathleen L Keller
- Departments of Nutritional Science, .,Food Science, The Pennsylvania State University, University Park, PA; and
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Ioannou S, Williams AL. Preliminary fMRI findings concerning the influence of 5-HTP on food selection. Brain Behav 2017; 7:e00594. [PMID: 28127513 PMCID: PMC5256178 DOI: 10.1002/brb3.594] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 08/10/2016] [Accepted: 09/10/2016] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE This functional magnetic resonance imaging study was designed to observe how physiological brain states can alter food preferences. A primary goal was to observe food-sensitive regions and moreover examine whether 5-HTP intake would activate areas which have been associated with appetite suppression, anorexia, satiety, and weight loss. METHODS AND PROCEDURE Fourteen healthy male and female participants took part in the study, of which half of them received the supplement 5-HTP and the rest vitamin C (control) on an empty stomach. During the scanning session, they passively observed food (high calories, proteins, carbohydrates) and nonfood movie stimuli. RESULTS Within the 5-HTP group, a comparison of food and nonfood stimuli showed significant responses that included the limbic system, the basal ganglia, and the prefrontal, temporal, and parietal cortices. For the vitamin C group, activity was mainly located in temporal and occipital regions. Compared to the vitamin C group, the 5-HTP group in response to food showed increased activation on the VMPFC, the DLPFC, limbic, and temporal regions. For the 5-HTP group, activity in response to food high in protein content compared to food high in calories and carbohydrates was located in the limbic system and the right caudomedial OFC, whereas for the vitamin C group, activity was mainly located at the inferior parietal lobes, the anterior cingulate gyri, and the left ventrolateral OFC. Greater responses to carbohydrates and high calorie stimuli in the vitamin C group were located at the right temporal gyrus, the occipital gyrus, the right VLPFC, whereas for the 5-HTP group, activity was observed at the left VMPFC, the parahippocampal gyrus bilaterally, the occipital lobe, and middle temporal gyri. DISCUSSION In line with the hypotheses, 5-HTP triggered cortical responses associated with healthy body weight as well as cerebral preferences for protein-rich stimuli. The brain's activity is altered by macronutrients rich or deprived in the body. By reading the organisms physiological states and combining them with memory experiences, it constructs behavioral strategies steering an individual toward or in opposition to a particular food.
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Affiliation(s)
- Stephanos Ioannou
- Department of Physiology College of Medicine Alfaisal University Riyadh Saudi Arabia; Department of Life Sciences & Centre for Cognitive Neuroscience Brunel University London Uxbridge Middlesex UK
| | - Adrian L Williams
- Department of Life Sciences & Centre for Cognitive Neuroscience Brunel University London Uxbridge Middlesex UK
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35
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Brain response to images of food varying in energy density is associated with body composition in 7- to 10-year-old children: Results of an exploratory study. Physiol Behav 2016; 162:3-9. [DOI: 10.1016/j.physbeh.2016.03.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/12/2016] [Accepted: 03/08/2016] [Indexed: 11/20/2022]
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36
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Chen J, Papies EK, Barsalou LW. A core eating network and its modulations underlie diverse eating phenomena. Brain Cogn 2016; 110:20-42. [PMID: 27156016 DOI: 10.1016/j.bandc.2016.04.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 01/03/2016] [Accepted: 04/15/2016] [Indexed: 12/20/2022]
Abstract
We propose that a core eating network and its modulations account for much of what is currently known about the neural activity underlying a wide range of eating phenomena in humans (excluding homeostasis and related phenomena). The core eating network is closely adapted from a network that Kaye, Fudge, and Paulus (2009) proposed to explain the neurocircuitry of eating, including a ventral reward pathway and a dorsal control pathway. In a review across multiple literatures that focuses on experiments using functional Magnetic Resonance Imaging (fMRI), we first show that neural responses to food cues, such as food pictures, utilize the same core eating network as eating. Consistent with the theoretical perspective of grounded cognition, food cues activate eating simulations that produce reward predictions about a perceived food and potentially motivate its consumption. Reviewing additional literatures, we then illustrate how various factors modulate the core eating network, increasing and/or decreasing activity in subsets of its neural areas. These modulating factors include food significance (palatability, hunger), body mass index (BMI, overweight/obesity), eating disorders (anorexia nervosa, bulimia nervosa, binge eating), and various eating goals (losing weight, hedonic pleasure, healthy living). By viewing all these phenomena as modulating a core eating network, it becomes possible to understand how they are related to one another within this common theoretical framework. Finally, we discuss future directions for better establishing the core eating network, its modulations, and their implications for behavior.
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Affiliation(s)
- Jing Chen
- Department of Psychology, Emory University, United States
| | - Esther K Papies
- Institute of Neuroscience and Psychology, University of Glasgow, UK; School of Psychology, University of Glasgow, UK
| | - Lawrence W Barsalou
- Institute of Neuroscience and Psychology, University of Glasgow, UK; School of Psychology, University of Glasgow, UK.
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Basu T, Bao P, Lerner A, Anderson L, Page K, Stanczyk F, Mishell D, Segall-Gutierrez P. The Effect of Depo Medroxyprogesterone Acetate (DMPA) on Cerebral Food Motivation Centers: A Pilot Study using Functional Magnetic Resonance Imaging. Contraception 2016; 94:321-7. [PMID: 27129935 DOI: 10.1016/j.contraception.2016.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 04/12/2016] [Accepted: 04/15/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The primary objective is to examine activation of food motivation centers in the brain before and 8 weeks after depo medroxyprogesterone acetate (DMPA) administration. STUDY DESIGN This prospective experimental pilot study examined the effects of DMPA on food motivation centers utilizing functional magnetic resonance imaging (fMRI) in eight nonobese, ovulatory subjects. fMRI blood oxygen level dependent (BOLD) signal was measured using a 3-Tesla Scanner while participants viewed images of high-calorie foods, low-calorie foods and nonfood objects. fMRI scans were performed at baseline and 8 weeks after participants received one intramuscular dose of DMPA 150 mg. fMRI data were analyzed using the FMRIB Software Library. Changes in adiposity and circulating leptin and ghrelin levels were also measured. RESULTS There was a greater BOLD signal response to food cues in brain regions associated with food motivation (anterior cingulate gyrus, orbitofrontal cortex) 8 weeks after DMPA administration compared to baseline (z>2.3, p<.05 whole-brain analysis clustered corrected). No statistically significant change was detected in circulating leptin or ghrelin levels or fat mass 8 weeks after DMPA administration. CONCLUSION Analysis of differences in food motivation may guide the development of interventions to prevent weight gain in DMPA users. IMPLICATIONS These data support a neural origin as one of the mechanisms underlying weight gain in DMPA users and may guide future research examining weight gain and contraception.
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Affiliation(s)
- Tania Basu
- Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine
| | - Pinglei Bao
- Department of Neuroscience, University of Southern California
| | - Alexander Lerner
- Department of Radiology, University of Southern California Keck School of Medicine
| | - Lindsey Anderson
- Divison of Biokinesiology and Physical Therapy, University of Southern California
| | - Kathleen Page
- Department of Internal Medicine, University of Southern California Keck School of Medicine
| | - Frank Stanczyk
- Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine
| | - Daniel Mishell
- Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine
| | - Penina Segall-Gutierrez
- Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine
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Standardized food images: A photographing protocol and image database. Appetite 2016; 96:166-173. [DOI: 10.1016/j.appet.2015.08.041] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 08/28/2015] [Accepted: 08/31/2015] [Indexed: 11/18/2022]
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Iranpour J, Morrot G, Claise B, Jean B, Bonny JM. Using High Spatial Resolution to Improve BOLD fMRI Detection at 3T. PLoS One 2015; 10:e0141358. [PMID: 26550990 PMCID: PMC4638337 DOI: 10.1371/journal.pone.0141358] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/07/2015] [Indexed: 11/19/2022] Open
Abstract
For different functional magnetic resonance imaging experiments using blood oxygenation level-dependent (BOLD) contrast, the acquisition of T2*-weighted scans at a high spatial resolution may be advantageous in terms of time-course signal-to-noise ratio and of BOLD sensitivity when the regions are prone to susceptibility artifacts. In this study, we explore this solution by examining how spatial resolution influences activations elicited when appetizing food pictures are viewed. Twenty subjects were imaged at 3 T with two different voxel volumes, 3.4 μl and 27 μl. Despite the diminution of brain coverage, we found that high-resolution acquisition led to a better detection of activations. Though known to suffer to different degrees from susceptibility artifacts, the activations detected by high spatial resolution were notably consistent with those reported in published activation likelihood estimation meta-analyses, corresponding to taste-responsive regions. Furthermore, these regions were found activated bilaterally, in contrast with previous findings. Both the reduction of partial volume effect, which improves BOLD contrast, and the mitigation of susceptibility artifact, which boosts the signal to noise ratio in certain regions, explained the better detection noted with high resolution. The present study provides further evidences that high spatial resolution is a valuable solution for human BOLD fMRI, especially for studying food-related stimuli.
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Affiliation(s)
| | - Gil Morrot
- Laboratoire Charles Coulomb—UMR 5221 CNRS, Université des Sciences et Techniques—Montpellier 2, place Eugène-Bataillon, 34090, Montpellier, France
| | - Béatrice Claise
- Neuroradiologie A, Plateforme Recherche IRM—CHU Gabriel-Montpied, F63000, Clermont-Ferrand, France
| | - Betty Jean
- Neuroradiologie A, Plateforme Recherche IRM—CHU Gabriel-Montpied, F63000, Clermont-Ferrand, France
| | - Jean-Marie Bonny
- UR370 QuaPA—INRA, F-63122, Saint-Genès-Champanelle, France
- * E-mail:
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40
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Obregón AM, Pettinelli PP, Santos JL. Childhood obesity and eating behaviour. J Pediatr Endocrinol Metab 2015; 28:497-502. [PMID: 25389988 DOI: 10.1515/jpem-2014-0206] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 09/29/2014] [Indexed: 11/15/2022]
Abstract
The prevalence of childhood obesity has increased substantially in the recent decade as a result of the reduction in physical activity and the availability of high-fat and high-energy-density foods which the paediatric population faces daily. Although children are highly exposed to these foods, there is a wide variation in body weight, suggesting the presence of different patterns of response to an "obesogenic" environment. This wide variability from the point of view of eating behaviour involves a number of social issues (e.g., food availability, cost) as well as genuine behavioural traits such as the response to satiety, energy compensation, eating rate, responsiveness to food, food reward and dietary preferences. This article reviews the main physiological variables related to energy intake affecting eating behaviour in the paediatric population.
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Szabo-Reed AN, Breslin FJ, Lynch AM, Patrician TM, Martin LE, Lepping RJ, Powell JN, Yeh HWH, Befort CA, Sullivan D, Gibson C, Washburn R, Donnelly JE, Savage CR. Brain function predictors and outcome of weight loss and weight loss maintenance. Contemp Clin Trials 2015; 40:218-31. [PMID: 25533729 PMCID: PMC4314339 DOI: 10.1016/j.cct.2014.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 12/09/2014] [Accepted: 12/12/2014] [Indexed: 01/22/2023]
Abstract
Obesity rates are associated with public health consequences and rising health care costs. Weight loss interventions, while effective, do not work for everyone, and weight regain is a significant problem. Eating behavior is influenced by a convergence of processes in the brain, including homeostatic factors and motivational processing that are important contributors to overeating. Initial neuroimaging studies have identified brain regions that respond differently to visual food cues in obese and healthy weight individuals that are positively correlated with reports of hunger in obese participants. While these findings provide mechanisms of overeating, many important questions remain. It is not known whether brain activation patterns change after weight loss, or if they change differentially based on amount of weight lost. Also, little is understood regarding biological processes that contribute to long-term weight maintenance. This study will use neuroimaging in participants while viewing food and non-food images. Functional Magnetic Resonance Imaging will take place before and after completion of a twelve-week weight loss intervention. Obese participants will be followed though a 6-month maintenance period. The study will address three aims: 1. Characterize brain activation underlying food motivation and impulsive behaviors in obese individuals. 2. Identify brain activation changes and predictors of weight loss. 3. Identify brain activation predictors of weight loss maintenance. Findings from this study will have implications for understanding mechanisms of obesity, weight loss, and weight maintenance. Results will be significant to public health and could lead to a better understanding of how differences in brain activation relate to obesity.
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Affiliation(s)
- Amanda N Szabo-Reed
- Department of Internal Medicine, University of Kansas Medical Center, United States
| | - Florence J Breslin
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, United States
| | - Anthony M Lynch
- Department of Internal Medicine, University of Kansas Medical Center, United States
| | - Trisha M Patrician
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, United States
| | - Laura E Martin
- Department of Preventive Medicine & Public Health, University of Kansas Medical Center, United States; Holgund Brain Imaging Center, University of Kansas Medical Center, United States
| | - Rebecca J Lepping
- Holgund Brain Imaging Center, University of Kansas Medical Center, United States
| | - Joshua N Powell
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, United States
| | - Hung-Wen Henry Yeh
- Department of Biostatistics, University of Kansas Medical Center, United States
| | - Christie A Befort
- Department of Preventive Medicine & Public Health, University of Kansas Medical Center, United States
| | - Debra Sullivan
- Department of Dietetics and Nutrition, University of Kansas Medical Center, United States
| | - Cheryl Gibson
- Department of Internal Medicine, University of Kansas Medical Center, United States
| | - Richard Washburn
- Department of Internal Medicine, University of Kansas Medical Center, United States
| | - Joseph E Donnelly
- Department of Internal Medicine, University of Kansas Medical Center, United States
| | - Cary R Savage
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, United States.
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van Meer F, van der Laan LN, Adan RA, Viergever MA, Smeets PA. What you see is what you eat: An ALE meta-analysis of the neural correlates of food viewing in children and adolescents. Neuroimage 2015; 104:35-43. [DOI: 10.1016/j.neuroimage.2014.09.069] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 09/08/2014] [Accepted: 09/29/2014] [Indexed: 11/28/2022] Open
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Giuliani NR, Pfeifer JH. Age-related changes in reappraisal of appetitive cravings during adolescence. Neuroimage 2014; 108:173-81. [PMID: 25536500 DOI: 10.1016/j.neuroimage.2014.12.037] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 11/28/2014] [Accepted: 12/13/2014] [Indexed: 10/24/2022] Open
Abstract
The ability to regulate temptation and manage appetitive cravings is an important aspect of healthy adolescent development, but the neural systems underlying this process are understudied. In the present study, 60 healthy females evenly distributed from 10 to 23years of age used reappraisal to regulate the desire to consume personally-craved and not craved unhealthy foods. Reappraisal elicited activity in common self-regulation regions including the dorsal and ventral lateral prefrontal cortex (specifically superior and inferior frontal gyri), dorsal anterior cingulate cortex, and inferior parietal lobule. Viewing personally-craved foods (versus not craved foods) elicited activity in regions including the ventral striatum, as well as more rostral and ventral anterior cingulate cortex extending into the orbitofrontal cortex. Age positively correlated with regulation-related activity in the right inferior frontal gyrus, and negatively correlated with reactivity-related activity in the right superior and dorsolateral prefrontal cortices. Age-adjusted BMI negatively correlated with regulation-related activity in the predominantly left lateralized frontal and parietal regions. These results suggest that the age-related changes seen in the reappraisal of negative emotion may not be as pronounced in the reappraisal of food craving. Therefore, reappraisal of food craving in particular may be an effective way to teach teenagers to manage cravings for other temptations encountered in adolescence, including alcohol, drugs, and unhealthy food.
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English L, Lasschuijt M, Keller KL. Mechanisms of the portion size effect. What is known and where do we go from here? Appetite 2014; 88:39-49. [PMID: 25447010 DOI: 10.1016/j.appet.2014.11.004] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/26/2014] [Accepted: 11/03/2014] [Indexed: 01/26/2023]
Abstract
Childhood obesity is a persistent problem worldwide, and of particular concern in the United States. Clarifying the role of the food environment in promoting overeating is an important step toward reducing the prevalence of obesity. One potential contributor to the obesity epidemic is the increased portion sizes of foods commonly served. Portion sizes of foods served both at home and away from home have dramatically increased over the past 40 years. Consistently, short-term studies have demonstrated that increasing portion size leads to increased food intake in adults and children, a phenomenon known as the portion size effect. However, the mechanisms underlying this effect are poorly understood. Understanding these mechanisms could assist in clarifying the relationship between portion size and weight status and help inform the development of effective obesity interventions. First, we review the role of visual cues, such as plate size, unit, and utensil size as a potential moderator of the portion size effect. In addition, we discuss meal microstructure components including bite size, rate, and frequency, as these may be altered in response to different portion sizes. We also review theories that implicate post-ingestive, flavor-nutrient learning as a key moderator of the portion size effect. Furthermore, we present preliminary data from an ongoing study that is applying neuroimaging to better understand these mechanisms and identify modifiable child characteristics that could be targeted in obesity interventions. Our tentative findings suggest that individual differences in cognitive (e.g. loss of control eating) and neural responses to food cues may be critical in understanding the mechanisms of the portion size effect. To advance this research area, studies that integrate measures of individual subject-level differences with assessment of food-related characteristics are needed.
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Affiliation(s)
- Laural English
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA 16802, United States
| | - Marlou Lasschuijt
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA 16802, United States; Division of Human Nutrition, Wageningen University, Wageningen, Netherlands
| | - Kathleen L Keller
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA 16802, United States; Department of Food Science, The Pennsylvania State University, University Park, PA 16802, United States.
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Folkvord F, Anschütz DJ, Wiers RW, Buijzen M. The role of attentional bias in the effect of food advertising on actual food intake among children. Appetite 2014; 84:251-8. [PMID: 25451582 DOI: 10.1016/j.appet.2014.10.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/16/2014] [Accepted: 10/17/2014] [Indexed: 10/24/2022]
Abstract
This study examined the potential moderating role of attentional bias (i.e., gaze duration, number of fixations, latency of initial fixation) in the effect of advergames promoting energy-dense snacks on children's snack intake. A randomized between-subject design was conducted with 92 children who played an advergame that promoted either energy-dense snacks or nonfood products. Eye movements and reaction times to food and nonfood cues were recorded to assess attentional bias during playtime using eye-tracking methods. Children could eat freely after playing the game. The results showed that playing an advergame containing food cues increased total intake. Furthermore, children with a higher gaze duration for the food cues ate more of the advertised snacks. In addition, children with a faster latency of initial fixation to the food cues ate more in total and ate more of the advertised snacks. The number of fixations on the food cues did not increase actual snack intake. Food advertisements are designed to grab attention, and this study shows that the extent to which a child's attention is directed to a food cue increases the effect of the advertisement.
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Affiliation(s)
- Frans Folkvord
- Behavioural Science Institute BSI, Communication Science, Radboud University, Thomas van Aquinostraat 2, Nijmegen 6526 GD, Netherlands.
| | - Doeschka J Anschütz
- Behavioural Science Institute BSI, Communication Science, Radboud University, Thomas van Aquinostraat 2, Nijmegen 6526 GD, Netherlands
| | - Reinout W Wiers
- Addiction Development and Psychopathology (ADAPT)-lab, Department of Psychology, University of Amsterdam, Netherlands
| | - Moniek Buijzen
- Behavioural Science Institute BSI, Communication Science, Radboud University, Thomas van Aquinostraat 2, Nijmegen 6526 GD, Netherlands
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46
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Cheah YS, Lee S, Ashoor G, Nathan Y, Reed LJ, Zelaya FO, Brammer MJ, Amiel SA. Ageing diminishes the modulation of human brain responses to visual food cues by meal ingestion. Int J Obes (Lond) 2014; 38:1186-92. [PMID: 24335762 DOI: 10.1038/ijo.2013.237] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 11/22/2013] [Accepted: 12/10/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Rates of obesity are greatest in middle age. Obesity is associated with altered activity of brain networks sensing food-related stimuli and internal signals of energy balance, which modulate eating behaviour. The impact of healthy mid-life ageing on these processes has not been characterised. We therefore aimed to investigate changes in brain responses to food cues, and the modulatory effect of meal ingestion on such evoked neural activity, from young adulthood to middle age. SUBJECTS/METHODS Twenty-four healthy, right-handed subjects, aged 19.5-52.6 years, were studied on separate days after an overnight fast, randomly receiving 50 ml water or 554 kcal mixed meal before functional brain magnetic resonance imaging while viewing visual food cues. RESULTS Across the group, meal ingestion reduced food cue-evoked activity of amygdala, putamen, insula and thalamus, and increased activity in precuneus and bilateral parietal cortex. Corrected for body mass index, ageing was associated with decreasing food cue-evoked activation of right dorsolateral prefrontal cortex (DLPFC) and precuneus, and increasing activation of left ventrolateral prefrontal cortex (VLPFC), bilateral temporal lobe and posterior cingulate in the fasted state. Ageing was also positively associated with the difference in food cue-evoked activation between fed and fasted states in the right DLPFC, bilateral amygdala and striatum, and negatively associated with that of the left orbitofrontal cortex and VLPFC, superior frontal gyrus, left middle and temporal gyri, posterior cingulate and precuneus. There was an overall tendency towards decreasing modulatory effects of prior meal ingestion on food cue-evoked regional brain activity with increasing age. CONCLUSIONS Healthy ageing to middle age is associated with diminishing sensitivity to meal ingestion of visual food cue-evoked activity in brain regions that represent the salience of food and direct food-associated behaviour. Reduced satiety sensing may have a role in the greater risk of obesity in middle age.
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Affiliation(s)
- Y S Cheah
- Diabetes Research Group, School of Medicine, King's College London, London, UK
| | - S Lee
- 1] Diabetes Research Group, School of Medicine, King's College London, London, UK [2] Centre for Neuroimaging Sciences, Institute of Psychiatry, King's College London, London, UK
| | - G Ashoor
- Diabetes Research Group, School of Medicine, King's College London, London, UK
| | - Y Nathan
- Diabetes Research Group, School of Medicine, King's College London, London, UK
| | - L J Reed
- 1] Centre for Neuroimaging Sciences, Institute of Psychiatry, King's College London, London, UK [2] Division of Brain Sciences, Centre for Mental Health, Imperial College London, London, UK
| | - F O Zelaya
- Centre for Neuroimaging Sciences, Institute of Psychiatry, King's College London, London, UK
| | - M J Brammer
- Centre for Neuroimaging Sciences, Institute of Psychiatry, King's College London, London, UK
| | - S A Amiel
- Diabetes Research Group, School of Medicine, King's College London, London, UK
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Abnormal relationships between the neural response to high- and low-calorie foods and endogenous acylated ghrelin in women with active and weight-recovered anorexia nervosa. Psychiatry Res 2014; 223:94-103. [PMID: 24862390 PMCID: PMC4090258 DOI: 10.1016/j.pscychresns.2014.04.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 03/03/2014] [Accepted: 04/29/2014] [Indexed: 11/20/2022]
Abstract
Evidence contributing to the understanding of neurobiological mechanisms underlying appetite dysregulation in anorexia nervosa draws heavily on separate lines of research into neuroendocrine and neural circuitry functioning. In particular, studies consistently cite elevated ghrelin and abnormal activation patterns in homeostatic (hypothalamus) and hedonic (striatum, amygdala, insula) regions governing appetite. The current preliminary study examined the interaction of these systems, based on research demonstrating associations between circulating ghrelin levels and activity in these regions in healthy individuals. In a cross-sectional design, we studied 13 women with active anorexia nervosa (AN), 9 women weight-recovered from AN (AN-WR), and 12 healthy-weight control women using a food cue functional magnetic resonance imaging paradigm, with assessment of fasting levels of acylated ghrelin. Healthy-weight control women exhibited significant positive associations between fasting acylated ghrelin and activity in the right amygdala, hippocampus, insula, and orbitofrontal cortex in response to high-calorie foods, associations which were absent in the AN and AN-WR groups. Women with AN-WR demonstrated a negative relationship between ghrelin and activity in the left hippocampus in response to high-calorie foods, while women with AN showed a positive association between ghrelin and activity in the right orbitofrontal cortex in response to low-calorie foods. Findings suggest a breakdown in the interaction between ghrelin signaling and neural activity in relation to reward responsivity in AN, a phenomenon that may be further characterized using pharmacogenetic studies.
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Ness A, Bruce J, Bruce A, Aupperle R, Lepping R, Martin L, Hancock L, Patrician T, Malley S, Selim N, Savage CR. Pre-surgical cortical activation to food pictures is associated with weight loss following bariatric surgery. Surg Obes Relat Dis 2014; 10:1188-95. [PMID: 25443066 DOI: 10.1016/j.soard.2014.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 05/13/2014] [Accepted: 06/02/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent research suggests that preintervention functional magnetic resonance imaging (fMRI) data may predict weight loss outcomes among patients who participate in a behavioral weight loss plan. No study has examined whether presurgical brain activation can predict outcomes following bariatric surgery. METHOD The aim of the present study was to determine if brain activations during a presurgical fMRI food-motivation paradigm are associated with weight loss 3 and 6 months following laparoscopic adjustable gastric banding (LAGB). Nineteen participants viewed food and nonfood pictures from a well-established food motivation paradigm during an fMRI scanning session before LAGB surgery. Weight was assessed presurgery and 3 and 6 months postsurgery; data for all participants was available at each time point. fMRI data were analyzed using the BrainVoyager QX statistical package. Whole brain voxelwise correlations of presurgery (food-nonfood) brain activation and weight, corrected for multiple comparisons, were performed to analyze the relationship between presurgical brain activation and subsequent weight loss. The settings were a medical university brain imaging center and 2 surgical weight loss centers in a major metropolitan area. RESULTS Increased activity in frontal regions associated with cognitive control (medial, middle, superior frontal gyrus) and posterior cingulate cortex was associated with weight loss following LAGB. CONCLUSION We found that neural activity in previously established regions associated with cognitive and behavioral self-regulation predicts weight loss following bariatric surgery. These preliminary findings highlight the role of neural circuitry in the success and maintenance of weight loss and suggest a possible future use of fMRI in screening LAGB surgery candidates.
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Affiliation(s)
- Abigail Ness
- Department of Psychology, University of Missouri-Kansas City, Kansas City, Missouri
| | - Jared Bruce
- Department of Psychology, University of Missouri-Kansas City, Kansas City, Missouri.
| | - Amanda Bruce
- Department of Pediatrics, University of Kansas Medical Center and Children's Mercy Hospital, Kansas City, Missouri
| | - Robin Aupperle
- Department of Psychology, University of Missouri-Kansas City, Kansas City, Missouri
| | - Rebecca Lepping
- Hoglund Brain Imaging Center, University of Kansas Medical Center, Kansas City, Kansas
| | - Laura Martin
- Hoglund Brain Imaging Center, University of Kansas Medical Center, Kansas City, Kansas; Department of Preventive Medicine & Public Health, University of Kansas Medical Center, Kansas City, Kansas
| | - Laura Hancock
- Department of Psychology, University of Missouri-Kansas City, Kansas City, Missouri
| | - Trisha Patrician
- Center for Health Behavior Neuroscience, University of Kansas Medical Center, Kansas City, Kansas
| | - Steve Malley
- Malley Surgical Weight Loss Center, Mission, Kansas
| | - Niazy Selim
- Department of Endoscopic/Bariatric Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Cary R Savage
- Department of Preventive Medicine & Public Health, University of Kansas Medical Center, Kansas City, Kansas; Department of Psychiatry & Behavioral Sciences, University of Kansas Medical Center, Kansas City, Kansas
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Eiler WJA, Dzemidzic M, Case KR, Armstrong CLH, Mattes RD, Cyders MA, Considine RV, Kareken DA. Ventral frontal satiation-mediated responses to food aromas in obese and normal-weight women. Am J Clin Nutr 2014; 99:1309-18. [PMID: 24695888 PMCID: PMC4021781 DOI: 10.3945/ajcn.113.080788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Sensory properties of foods promote and guide consumption in hunger states, whereas satiation should dampen the sensory activation of ingestive behaviors. Such activation may be disordered in obese individuals. OBJECTIVE Using functional magnetic resonance imaging (fMRI), we studied regional brain responses to food odor stimulation in the sated state in obese and normal-weight individuals targeting ventral frontal regions known to be involved in coding for stimulus reward value. DESIGN Forty-eight women (25 normal weight; 23 obese) participated in a 2-day (fed compared with fasting) fMRI study while smelling odors of 2 foods and an inedible, nonfood object. Analyses were conducted to permit an examination of both general and sensory-specific satiation (satiation effects specific to a given food). RESULTS Normal-weight subjects showed significant blood oxygen level-dependent responses in the ventromedial prefrontal cortex (vmPFC) to food aromas compared with responses induced by the odor of an inedible object. Normal-weight subjects also showed general (but not sensory-specific) satiation effects in both the vmPFC and orbitofrontal cortex. Obese subjects showed no differential response to the aromas of food and the inedible object when fasting. Within- and between-group differences in satiation were driven largely by changes in the response to the odor of the inedible stimulus. Responses to food aromas in the obese correlated with trait negative urgency, the tendency toward negative affect-provoked impulsivity. CONCLUSIONS Ventral frontal signaling of reward value may be disordered in obesity, with negative urgency heightening responses to food aromas. The observed nature of responses to food and nonfood stimuli suggests that future research should independently quantify each to fully understand brain reward signaling in obesity.
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Affiliation(s)
- William J A Eiler
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - Mario Dzemidzic
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - K Rose Case
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - Cheryl L H Armstrong
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - Richard D Mattes
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - Melissa A Cyders
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - Robert V Considine
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
| | - David A Kareken
- From the Departments of Neurology (WJAE, MD, KRC, and DAK), Radiology (MD and DAK), Medicine (RVC) (Endocrinology), and Psychiatry (DAK), Indiana University School of Medicine, Indianapolis, IN; the Department of Nutrition Science, Purdue University, West Lafayette, IN (CLHA and RDM); and the Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN (MAC)
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Pollack LO, Lundgren JD. Using the Neuroscience of Obesity, Eating Behavior, and Sleep to Inform the Neural Mechanisms of Night Eating Syndrome. Curr Obes Rep 2014; 3:79-90. [PMID: 26626469 DOI: 10.1007/s13679-013-0082-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The development and maintenance of night eating syndrome (NES) is likely influenced by physiological, psychological, and social factors. Within the physiological domain, neural mechanisms (e.g., neurotransmitters and specific brain region functioning) remain understudied in contrast to other eating disorders and obesity. The serotonin system has been hypothesized to contribute to NES based on one single photon emission computed tomography (SPECT) study and supportive pharmacologic treatment outcome findings, but additional neural models are plausible. Functional magnetic resonance imaging (fMRI) is a brain imaging tool that is increasingly being used to study obesity, eating behavior, and sleep. Converging data from these literatures using food motivation and decision making fMRI paradigms suggest that the prefrontal and limbic brain systems might also play a role in the development and/or maintenance of NES. We use these data to support a new neural model of NES for future testing and validation.
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Affiliation(s)
- Lauren O Pollack
- Department of Psychology, University of Missouri-Kansas City, 5030 Cherry Street, Kansas City, MO, 64110, USA.
| | - Jennifer D Lundgren
- Department of Psychology, University of Missouri-Kansas City, 5030 Cherry Street, Kansas City, MO, 64110, USA.
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