Julie Ortmann , André Schulz , Annika P.C. Lutz , Zoé van Dyck , Claus Vögele
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引用次数: 0
Abstract
Objective
This study provides a comprehensive assessment of cardiac interoception in individuals with binge eating (BE) behavior and compares their emotional experience and affective state related to heartbeat perception with those of healthy controls (HCs).
Method
After a 5-min resting phase, participants (n = 28 BE group, n = 28 HC group) completed the heartbeat counting task, with concurrent EEG and ECG recording. Indices for interoceptive accuracy (IAcc), interoceptive beliefs (IBe), and interoceptive insight (IIn) were computed. Heart rate (HR) and heart rate variability (HRV) served as indicators of bodily signal strength. Heartbeat-evoked potentials (HEPs) were derived to assess the neural representation of cardio-afferent signals at the cortical level during rest or task performance. Emotional experiences and changes in affective state from pre-to post-task were assessed using self-reports.
Results
The BE group exhibited lower mean HR and higher HRV compared to HCs. No group differences were found in IAcc, IBe, or IIn. HCs showed increased HEP amplitudes during the task compared to rest, whereas no such effect was observed in the BE group. Both groups reported an increase in negative affect from pre-to post-task, with the BE group experiencing significantly higher negative affect post-task.
Discussion
The altered neural representation observed in the BE group may reflect disengagement from bodily sensations, which may impair emotion processing and regulation, potentially contributing to BE behavior. Further research is warranted to determine whether this pattern is specific BE-related eating disorders (EDs) or relevant to EDs in general.
期刊介绍：
Appetite is an international research journal specializing in cultural, social, psychological, sensory and physiological influences on the selection and intake of foods and drinks. It covers normal and disordered eating and drinking and welcomes studies of both human and non-human animal behaviour toward food. Appetite publishes research reports, reviews and commentaries. Thematic special issues appear regularly. From time to time the journal carries abstracts from professional meetings. Submissions to Appetite are expected to be based primarily on observations directly related to the selection and intake of foods and drinks; papers that are primarily focused on topics such as nutrition or obesity will not be considered unless they specifically make a novel scientific contribution to the understanding of appetite in line with the journal's aims and scope.
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