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Originalia

Das hätte ich nicht essen sollen!

Published Online:September 01, 2006https://doi.org/10.1026/1616-3443.34.2.104

Abstract

Zusammenfassung.Theoretischer Hintergrund: Auswirkungen gezügelten Essverhaltens auf kognitive Funktionen zeigen sich auch in Ereigniskorrelierten Potentzialen (EKPs). Fragestellung: Verändert die Rückmeldung über den Kaloriengehalt eines Preloads die Wahrnehmung von Nahrungsreizen bei nicht gezügelten und gezügelten Esserinnen? Methode: Gezügelten und nicht gezügelten Esserinnen wurden tachistoskopisch nahrungsbezogene und nicht nahrungsbezogene Worte präsentiert, dabei wurden EKPs abgeleitet. Ergebnisse: In einem frühen Stadium der Reizverarbeitung zeigte sich anhand der P2 ein Effekt bei den nicht gezügelten Esserinnen, hier führten Nahrungsworte zu geringeren Amplituden. Die P3 als Maß für eine bereits kontrollierte Verarbeitung war nur bei gezügelten Esserinnen auf Nahrungsworte größer. Die Rückmeldung eines hohen Kaloriengehalts verstärkte leicht diesen Effekt. Schlussfolgerung: Es scheint elektrophysiologisch nachweisbare Unterschiede in der Wahrnehnung von Nahrungsreizen zwischen den beiden Gruppen zu geben.


I should not have eaten that! Effects of correct and false feedback about calorie content on evoked potentials in restrainde eaters

Abstract.Background: The influences of restrained eating on cognitive functions are even seen in event-related potentials (ERPs). Objective: Does feedback about the calorie content of a “preload“ affect the perception of food stimuli in restrained eaters? Methods: Food-related and food-unrelated words were presented tachistoscopically to restrained and unrestrained eaters, while ERPs were recorded. Results: Regarding P2 it was shown that in an early stage of processing there was an effect only in unrestrained eaters, for whom food words led to smaller amplitudes. P3, an indicator of controlled processing, was enhanced by food words in restrained eaters only. Feedback of a high-caloric preload moderately enhanced this effect. Conclusions: There seem to be differences in the perception of food-related stimuli between these groups which can be shown by electrophysiological measures.

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