Journal
NEUROSCIENCE
Volume 460, Issue -, Pages 130-144Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2021.01.015
Keywords
obesity; food; odor; priming; event-related potentials; EEG
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Funding
- French National Research Agency [Agence Nationale de la Recherche (ANR): ImplicEAT project] [ANR-17-CE21-0001]
- Agence Nationale de la Recherche (ANR) [ANR-17-CE21-0001] Funding Source: Agence Nationale de la Recherche (ANR)
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The study found that weight status influences cerebral activity underlying the processing of food cues outside of consciousness, as early as the first detectable P100 peak.
automatic processes and cerebral activity may differ between individuals with different weight statuses in the presence of food stimuli (e.g. odors, pictures). In the present study, we used an implicit olfactory priming paradigm to test the influence of non-attentively perceived food odors on the cerebral activity underlying the processing of food pictures, in normal-weight, overweight, and obese adults. A pear odor and a pound cake odor were used as primes, respectively priming sweet low-energy-density foods and high-energydensity foods. Event-related potentials were recorded while the participants passively watched pictures of sweet low and high-energy-density foods, under the two priming conditions plus an odorless control condition. The amplitude and latency of several peaks were measured (P100, N100, P200, N400). As a major result, we found that weight status influences the cerebral activity underlying the processing of food cues outside of consciousness, as early as the first detectable P100 peak. ? 2021 IBRO. Published by Elsevier Ltd. All rights reserved.
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