What is Driving the Binge in Binge Eating Disorder? Variability in Brain Response to Reward and the Escalation of Consumption
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 61
- 试验地点
- 1
- 主要终点
- Variability in blood-oxygen-level dependent (BOLD) signalling in the NAcc during effort allocation task
研究概览
简要总结
People who suffer from binge eating disorder experience recurrent episodes of binge eating.During these episodes, they consume an unusually large amount of food in a short amount of time and experience loss of control over eating. However, why such binge eating episodes occur is still largely unknown. This makes it difficult to develop targeted treatments. In this project, the experimenters are investigating the brain mechanisms that give rise to the disorder. They hypothesize that the binge eating episodes are due to an increased variability in reward processing, which they will assess repeatedly over days. They will test this hypothesis using mathematical models based on behavioural and MRI measurements that are related to the processing of rewards.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 69 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Binge eating disorder diagnosis
- •Subsyndromal binge eating (control)
排除标准
- •high risk of suicide
- •co-occurring psychotic, bi-polar disorders, alcohol/substance dependence within the past six months
- •lack of capacity for consent
- •medical disorders that would affect weight and ability to participate
- •insufficient German language skills (assessment will be in German)
- •taking medication that would affect weight
- •MRI exclusion criteria
- •irremovable metal attached to the body (e.g. piercings)
- •irremovable medical devices (e.g. pacemakers)
- •any trauma or surgery which may have left ferromagnetic material in the body
- •large tattoos
- •pregnancy
- •claustrophobia
结局指标
主要结局
Variability in blood-oxygen-level dependent (BOLD) signalling in the NAcc during effort allocation task
时间窗: 100 min
Variability of BOLD signal in the nucleus accumbens (NAcc) over time and between trials while performing an effort allocation task. The signal is measured through functional magnetic resonance imaging (fMRI) and variability is determined through model residuals.
Trial-to-trial variability in reward seeking in an effort allocation task
时间窗: 40 min
Variability of performance is an intra-individual measure, that is defined by the residuals of a linear mixed effects model of trial-to-trial performance on the effort allocation task.
Variability in BOLD signalling in the NAcc for food-cue reactivity
时间窗: 15
Variability of BOLD signal in the NAcc between blocks of food pictures. The signal is measured through fMRI and variability is determined through model residuals.
次要结局
- Variability in BOLD signalling in the NAcc during non-food-cue reactivity(5)